596  
FNUS55 KCYS 271918  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
118 PM MDT SUN MAY 27 2018  
 
FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT  
SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING   
DISCUSSION
 
 
FIRE WEATHER CONCERNS ARE LOW THROUGH THE PERIOD. AN UPPER LEVEL  
LOW PRESSURE SYSTEM WILL BRING ACTIVE WEATHER TO WYOMING AND  
NEBRASKA. ROUNDS OF SHOWERS AND THUNDERSTORMS WILL KEEP RELATIVE  
HUMIDITIES HIGH AND BRING WETTING RAIN THROUGH THE WEEK LIMITING  
THE OVERALL FIRE DANGER.  
 
WYZ301-281030-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 2400. SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS UNTIL 2400,  
THEN CHANCE OF SHOWERS AND THUNDERSTORMS. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, LARGE HAIL, AND HEAVY RAINFALL UNTIL  
2000. SOME THUNDERSTORMS MAY BE SEVERE WITH  
HEAVY RAINFALL AFTER 2000 UNTIL 2200, THEN SOME  
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL UNTIL  
2400.  
MIN TEMPERATURE.....50-55.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH. GUSTS UP TO 35 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
LAL.................5 UNTIL 2400, THEN 4.  
CHC OF WETTING RAIN.40 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 30 MPH BECOMING SOUTHWEST  
AROUND 15 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......1500-2400 FT AGL.  
SMOKE DISPERSAL.....POOR (24400-29800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY BE SEVERE AFTER 1000.  
MAX TEMPERATURE.....67-72.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH AND GUSTY.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......2200-3300 FT AGL INCREASING TO 4800-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (16100-47000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE UNTIL 2400.  
MIN TEMPERATURE.....48-53.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE NORTHWEST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......1100-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (12600-12700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....66-71.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........43-49 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 6700-8600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (51000 KNOT-FT) INCREASING TO VERY GOOD  
(119700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S. WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTH WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 70S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER  
70S.  
 

 
 
WYZ302-281030-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 0500. CHANCE OF  
THUNDERSTORMS UNTIL 2400. SHOWERS LIKELY.  
CHANCE OF THUNDERSTORMS AFTER 2400. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, LARGE HAIL, AND HEAVY RAINFALL UNTIL  
2000. SOME THUNDERSTORMS MAY BE SEVERE WITH  
HEAVY RAINFALL AFTER 2000 UNTIL 2200, THEN SOME  
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL UNTIL  
2400.  
MIN TEMPERATURE.....45-50.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 25 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................5 UNTIL 2400, THEN 4.  
CHC OF WETTING RAIN.45 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHEAST AROUND  
10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......1000-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (8400-15800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200. PATCHY FOG AFTER 1200  
UNTIL 1600. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1000 UNTIL 1200. SOME THUNDERSTORMS MAY  
BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....58-64.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
MIXING HEIGHT.......2300-3400 FT AGL INCREASING TO 4900-5800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (13700-27000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE UNTIL 2100.  
SOME THUNDERSTORMS MAY BE SEVERE AFTER 2100  
UNTIL 2400.  
MIN TEMPERATURE.....43-48.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 10 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......900-2200 FT AGL.  
SMOKE DISPERSAL.....POOR (14600-17300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....59-65.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2700-3500 FT AGL INCREASING TO 7300-8500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (47800 KNOT-FT) INCREASING TO VERY GOOD  
(119900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. WEST WINDS  
AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE  
UPPER 70S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 40S. HIGHS AROUND 70.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS AROUND 70.  
 

 
 
WYZ303-281030-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2400, THEN MOSTLY CLOUDY.  
CHANCE OF THUNDERSTORMS UNTIL 2400. CHANCE OF  
SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS AFTER  
2400. PATCHY FOG AFTER 2300 UNTIL 0100. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2000 UNTIL  
2200.  
MIN TEMPERATURE.....43-48.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH DECREASING TO AROUND 10  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......900-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (9900-23600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF THUNDERSTORMS UNTIL 1200.  
CHANCE OF SHOWERS. CHANCE OF THUNDERSTORMS  
AFTER 1200. PATCHY FOG AFTER 1200 UNTIL 1600.  
SOME THUNDERSTORMS MAY BE SEVERE AFTER 1000  
UNTIL 1200. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1200.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........46-52 PERCENT.  
24 HR TREND......18 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.  
MIXING HEIGHT.......2000-2900 FT AGL INCREASING TO 6000-8000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14000-36200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2100. CHANCE OF SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 2100 UNTIL 0300. SOME  
THUNDERSTORMS MAY BE SEVERE UNTIL 2100. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2100 UNTIL  
2400.  
MIN TEMPERATURE.....41-46.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1300-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (18300-19600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........40-46 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......3100-4400 FT AGL INCREASING TO 7600-8800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (54400 KNOT-FT) INCREASING TO VERY GOOD  
(112100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. SOUTHWEST WINDS  
AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
70S. SOUTHWEST WINDS AROUND 15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER  
70S.  
 

 
 
WYZ304-281030-  
SOUTHWEST CARBON COUNTY-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 2000. SLIGHT CHANCE OF SHOWERS. SLIGHT  
CHANCE OF THUNDERSTORMS AFTER 2000. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2000 UNTIL  
2200.  
MIN TEMPERATURE.....42-47.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......38 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH DECREASING TO AROUND 10  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......700-2000 FT AGL.  
SMOKE DISPERSAL.....POOR (9600-30300 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF THUNDERSTORMS UNTIL 1200.  
CHANCE OF SHOWERS. CHANCE OF THUNDERSTORMS  
AFTER 1200. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1000.  
MAX TEMPERATURE.....67-72.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........27-33 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 15 MPH  
INCREASING TO 25 MPH IN THE AFTERNOON.  
LAL.................3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......2400-3400 FT AGL INCREASING TO 10000-12000 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (15900-62400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2100. CHANCE OF SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 2100 UNTIL 0300. SOME  
THUNDERSTORMS MAY BE SEVERE UNTIL 2100. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2100 UNTIL  
2400.  
MIN TEMPERATURE.....40-45.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH SHIFTING TO THE SOUTHWEST  
AFTER MIDNIGHT.  
LAL.................3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......3100-3700 FT AGL DECREASING TO 1100-1600 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (9200-43500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS. SLIGHT CHANCE  
OF THUNDERSTORMS AFTER 0900 UNTIL 1200, THEN  
CHANCE OF THUNDERSTORMS.  
MAX TEMPERATURE.....67-72.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......3700-4400 FT AGL INCREASING TO 8800-10400 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (41900 KNOT-FT) INCREASING TO VERY GOOD  
(111400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE  
UPPER 70S. SOUTH WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
70S. SOUTH WINDS AROUND 15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID  
70S.    
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE MID 70S.  
 

 
 
WYZ305-281030-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2000 UNTIL  
2200.  
MIN TEMPERATURE.....40-45.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........78-84 PERCENT.  
24 HR TREND......36 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST AFTER  
MIDNIGHT. GUSTS UP TO 25 MPH.  
LAL.................3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......600-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (7200-13700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF THUNDERSTORMS UNTIL 1200.  
CHANCE OF SHOWERS. CHANCE OF THUNDERSTORMS  
AFTER 1200. PATCHY FOG AFTER 1200 UNTIL 1600.  
SOME THUNDERSTORMS MAY BE SEVERE AFTER 1000  
UNTIL 1200. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1200.  
MAX TEMPERATURE.....57-65.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........38-44 PERCENT.  
24 HR TREND......20 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE NORTHWEST IN  
THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON.  
MIXING HEIGHT.......2700-4200 FT AGL INCREASING TO 7500-9500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10200 KNOT-FT) INCREASING TO GOOD (65400  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2100. CHANCE OF SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 2100 UNTIL 0300. SOME  
THUNDERSTORMS MAY BE SEVERE UNTIL 2100. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2100 UNTIL  
2400.  
MIN TEMPERATURE.....37-42.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........85-91 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1400-3400 FT AGL.  
SMOKE DISPERSAL.....POOR (14300-34600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....55-65.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........43-49 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......4200-5500 FT AGL INCREASING TO 7800-9200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (69000 KNOT-FT) INCREASING TO VERY GOOD  
(122300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. SOUTH WINDS  
AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
60S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE MID 60S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER  
60S.  
 

 
 
WYZ306-281030-  
UPPER NORTH PLATTE RIVER BASIN-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2100, THEN MOSTLY CLOUDY  
UNTIL 0300, THEN PARTLY CLOUDY. SLIGHT CHANCE  
OF THUNDERSTORMS UNTIL 2400. CHANCE OF SHOWERS.  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 2400. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2000 UNTIL  
2200.  
MIN TEMPERATURE.....41-46.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........87-93 PERCENT.  
24 HR TREND......33 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH.  
LAL.................3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
MIXING HEIGHT.......800-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (6500-21800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 1200. SHOWERS LIKELY AND  
CHANCE OF THUNDERSTORMS AFTER 1200. PATCHY FOG  
AFTER 1200 UNTIL 1600. SOME THUNDERSTORMS MAY  
BE SEVERE AFTER 1000 UNTIL 1200. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......2500-3100 FT AGL INCREASING TO 7300-8200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (6800-33600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS  
MAY BE SEVERE UNTIL 2100. SOME THUNDERSTORMS  
MAY BE SEVERE AFTER 2100 UNTIL 2400.  
MIN TEMPERATURE.....38-43.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH. GUSTS UP TO 15 MPH IN  
THE EVENING.  
LAL.................3 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1400-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (14300-16600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......4500-5700 FT AGL INCREASING TO 9200-9700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (62800 KNOT-FT) INCREASING TO VERY GOOD  
(140200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE LOWER 70S.   
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER  
70S.  
 

 
 
WYZ307-281030-  
SNOWY RANGE/MEDICINE BOW NF-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2100, THEN MOSTLY CLOUDY  
UNTIL 0300, THEN PARTLY CLOUDY. CHANCE OF  
THUNDERSTORMS UNTIL 2400. CHANCE OF SHOWERS.  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 2400. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 2000 UNTIL  
2200.  
MIN TEMPERATURE.....36-42.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......41 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH.  
LAL.................3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH.  
MIXING HEIGHT.......700-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (8200-11500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 1200. SHOWERS LIKELY AND  
CHANCE OF THUNDERSTORMS AFTER 1200. PATCHY FOG  
AFTER 1200 UNTIL 1600. SOME THUNDERSTORMS MAY  
BE SEVERE AFTER 1000 UNTIL 1200. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....54-62.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........46-52 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH AND GUSTY.  
LAL.................3 UNTIL 1200, THEN 5.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
MIXING HEIGHT.......1900-2800 FT AGL INCREASING TO 4600-6400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5700-26300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2400. CHANCE OF SHOWERS. CHANCE OF SNOW SHOWERS  
AFTER 2400. SOME THUNDERSTORMS MAY BE SEVERE  
UNTIL 2100. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 2100 UNTIL 2400.  
MIN TEMPERATURE.....33-39.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......900-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (14700-17800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
0700. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 1200, THEN SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS. NO SNOW  
ACCUMULATION.  
MAX TEMPERATURE.....54-62.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........44-50 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......4800-6100 FT AGL INCREASING TO 7300-9000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD TO VERY GOOD (96800-129000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS AROUND 70. SOUTHWEST WINDS  
AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 60S.  
SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID  
60S.    
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.  
 

 
 
WYZ308-281030-  
LARAMIE VALLEY/SHIRLEY BASIN-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2100, THEN MOSTLY CLOUDY.  
PATCHY FOG UNTIL 0500. CHANCE OF THUNDERSTORMS  
UNTIL 2400. CHANCE OF SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 2400. SOME THUNDERSTORMS  
MAY BE SEVERE WITH DAMAGING WINDS, AND LARGE  
HAIL UNTIL 2000. SOME THUNDERSTORMS MAY BE  
SEVERE AFTER 2000 UNTIL 2200.  
MIN TEMPERATURE.....43-48.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH.  
LAL.................4.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1100-1900 FT AGL.  
SMOKE DISPERSAL.....POOR (11300-15000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF SHOWERS AND THUNDERSTORMS UNTIL 1200, THEN  
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
PATCHY FOG AFTER 1200 UNTIL 1600. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1000 UNTIL  
1200. SOME THUNDERSTORMS MAY BE SEVERE AFTER  
1200.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........44-50 PERCENT.  
24 HR TREND......15 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 20 MPH IN THE  
AFTERNOON.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
MIXING HEIGHT.......2100-2600 FT AGL INCREASING TO 4500-6100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (8200-24400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS  
MAY BE SEVERE UNTIL 2100. SOME THUNDERSTORMS  
MAY BE SEVERE AFTER 2100 UNTIL 2400.  
MIN TEMPERATURE.....39-44.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH.  
LAL.................3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......900-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (12900-21400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........39-45 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......3600-5600 FT AGL INCREASING TO 8200-9600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (70900 KNOT-FT) INCREASING TO VERY GOOD  
(126600 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WINDS  
GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.    
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE LOWER 70S.  
 

 
 
WYZ309-281030-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2100, THEN MOSTLY CLOUDY.  
PATCHY FOG UNTIL 2400. CHANCE OF THUNDERSTORMS  
UNTIL 2400. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 2400. SOME THUNDERSTORMS  
MAY BE SEVERE WITH DAMAGING WINDS, LARGE HAIL,  
AND HEAVY RAINFALL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE WITH HEAVY RAINFALL  
AFTER 2000 UNTIL 2200, THEN SOME THUNDERSTORMS  
MAY PRODUCE HEAVY RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....45-51.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 25 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................4.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2200 FT AGL.  
SMOKE DISPERSAL.....POOR (10300-18500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 1200, THEN SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER  
1200 UNTIL 1600. SOME THUNDERSTORMS MAY BE  
SEVERE AFTER 1000 UNTIL 1200. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....60-66.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................3 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......2200-3300 FT AGL INCREASING TO 3700-5400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (19000-26300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS  
MAY BE SEVERE UNTIL 2100. SOME THUNDERSTORMS  
MAY BE SEVERE AFTER 2100 UNTIL 2400.  
MIN TEMPERATURE.....41-47.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........86-92 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 10 MPH.  
LAL.................3 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......700-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (12900-20500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 1200, THEN CHANCE OF  
SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....63-69.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......4400-6400 FT AGL INCREASING TO 8700-9900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD TO VERY GOOD (92200-115300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WEST  
WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.  
WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS AROUND 80.  
SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID  
70S.  
 

 
 
WYZ310-281030-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2100, THEN MOSTLY CLOUDY.  
PATCHY FOG UNTIL 2400. CHANCE OF THUNDERSTORMS  
UNTIL 2400. SHOWERS LIKELY. CHANCE OF  
THUNDERSTORMS AFTER 2400. SOME THUNDERSTORMS  
MAY BE SEVERE WITH DAMAGING WINDS, LARGE HAIL,  
AND HEAVY RAINFALL UNTIL 2000. SOME  
THUNDERSTORMS MAY BE SEVERE WITH HEAVY RAINFALL  
AFTER 2000 UNTIL 2200, THEN SOME THUNDERSTORMS  
MAY PRODUCE HEAVY RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....50-55.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 40 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH DECREASING TO AROUND 10  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......800-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (15600-17000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 1200. CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 1200. PATCHY FOG AFTER 1200  
UNTIL 1600. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 0700 UNTIL 1200. SOME THUNDERSTORMS MAY  
BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....67-72.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......3200-5200 FT AGL.  
SMOKE DISPERSAL.....POOR (27700-33000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 0300. SLIGHT CHANCE OF  
SHOWERS AFTER 2400. SOME THUNDERSTORMS MAY BE  
SEVERE UNTIL 2400.  
MIN TEMPERATURE.....45-50.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST 5 TO 10 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
MIXING HEIGHT.......500-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (7500-9500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS.  
MAX TEMPERATURE.....69-74.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......2900-4800 FT AGL INCREASING TO 8400-9500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (51900-94700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.  
WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S. WINDS GENERALLY LESS THAN 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 80.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER  
70S.  
 

 
 
NEZ311-281030-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 2400. PATCHY  
FOG AFTER 0100 UNTIL 0500. CHANCE OF  
THUNDERSTORMS UNTIL 2400. SHOWERS LIKELY.  
CHANCE OF THUNDERSTORMS AFTER 2400. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, LARGE HAIL, AND HEAVY RAINFALL UNTIL  
2000. SOME THUNDERSTORMS MAY BE SEVERE WITH  
HEAVY RAINFALL AFTER 2000 UNTIL 2200, THEN SOME  
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL UNTIL  
2400.  
MIN TEMPERATURE.....53-58.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......21 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
WEST AFTER MIDNIGHT.  
LAL.................5 UNTIL 2400, THEN 4.  
CHC OF WETTING RAIN.40 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 20 MPH BECOMING NORTH AROUND 10 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......500-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (7200-19800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 1200, THEN SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER  
1200 UNTIL 1600. SOME THUNDERSTORMS MAY BE  
SEVERE AFTER 1000 UNTIL 1200. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....70-75.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......21 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH AND GUSTY.  
LAL.................3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST 15 TO 20 MPH.  
MIXING HEIGHT.......2800-4000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (27900-58000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE UNTIL 2400.  
MIN TEMPERATURE.....49-54.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH INCREASING TO SOUTH AROUND  
25 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......800-2100 FT AGL.  
SMOKE DISPERSAL.....POOR (19100-25500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. SLIGHT  
CHANCE OF THUNDERSTORMS AFTER 0900.  
MAX TEMPERATURE.....70-75.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......3300-4100 FT AGL INCREASING TO 8100-8800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO VERY GOOD (58100-102100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 70S. WEST WINDS  
AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
80S. SOUTH WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER  
70S.  
 

 
 
NEZ312-281030-  
BOX BUTTE/SOUTH SIOUX-  
118 PM MDT SUN MAY 27 2018  
   
..FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. PATCHY FOG  
UNTIL 0200. CHANCE OF THUNDERSTORMS UNTIL 2400.  
SHOWERS LIKELY. CHANCE OF THUNDERSTORMS AFTER  
2400. SOME THUNDERSTORMS MAY BE SEVERE WITH  
DAMAGING WINDS, LARGE HAIL, AND HEAVY RAINFALL  
UNTIL 2000. SOME THUNDERSTORMS MAY BE SEVERE  
WITH HEAVY RAINFALL AFTER 2000 UNTIL 2200, THEN  
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL  
UNTIL 2400.  
MIN TEMPERATURE.....52-57.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE EAST AFTER MIDNIGHT.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.40 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 30 MPH BECOMING EAST AROUND 15 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......900-2900 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (9900-59600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS UNTIL 1200. SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS AFTER 1200.  
PATCHY FOG AFTER 1200 UNTIL 1600. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 0700 UNTIL  
1200. SOME THUNDERSTORMS MAY BE SEVERE AFTER  
1200.  
MAX TEMPERATURE.....71-76.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
20-FOOT WINDS.......EAST 5 TO 10 MPH AND GUSTY.  
LAL.................3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST 15 TO 20 MPH.  
MIXING HEIGHT.......2600-4400 FT AGL.  
SMOKE DISPERSAL.....POOR TO GOOD (38900-60800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE UNTIL 2400.  
MIN TEMPERATURE.....47-52.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT. GUSTS UP TO 20 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
MIXING HEIGHT.......800-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (13100-15900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF SHOWERS AND THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....72-77.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........36-42 PERCENT.  
24 HR TREND......15 PERCENT DRIER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......2900-3600 FT AGL INCREASING TO 8600-9100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (39400 KNOT-FT) INCREASING TO VERY GOOD  
(100600 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.  
WEST WINDS AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE  
MID 80S. WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
80S. SOUTH WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER  
70S.  
 

 
 
NEZ313-281030-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
118 PM MDT SUN MAY 27 2018  
 
...SEVERE THUNDERSTORM WATCH 123 IN EFFECT UNTIL 8 PM MDT THIS  
EVENING...  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. PATCHY FOG  
UNTIL 1900. PATCHY FOG AFTER 2300 UNTIL 0200.  
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS  
UNTIL 2400. CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 2400. SOME THUNDERSTORMS MAY BE SEVERE  
WITH DAMAGING WINDS, AND LARGE HAIL UNTIL 2000.  
SOME THUNDERSTORMS MAY BE SEVERE AFTER 2000  
UNTIL 2200.  
MIN TEMPERATURE.....52-57.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 15 MPH WITH GUSTS TO AROUND 35 MPH  
BECOMING NORTHEAST AROUND 5 MPH AFTER MIDNIGHT.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 25 MPH DECREASING TO AROUND 15 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......800-2400 FT AGL.  
SMOKE DISPERSAL.....POOR (14500-37200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS UNTIL 1200, THEN  
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
PATCHY FOG AFTER 1200 UNTIL 1600. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 0700 UNTIL  
1200. SOME THUNDERSTORMS MAY BE SEVERE AFTER  
1200.  
MAX TEMPERATURE.....71-77.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......27 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST 10 TO 15 MPH.  
MIXING HEIGHT.......2300-3100 FT AGL INCREASING TO 4000-5400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (25300-49700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE UNTIL 2400.  
MIN TEMPERATURE.....47-52.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT. GUSTS UP TO 20 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
MIXING HEIGHT.......700-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (11000-12800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF THUNDERSTORMS AFTER 1200 UNTIL 1500. CHANCE  
OF SHOWERS AFTER 1200. CHANCE OF THUNDERSTORMS  
AFTER 1500.  
MAX TEMPERATURE.....74-79.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......18 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......2300-3200 FT AGL INCREASING TO 8600-9800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (31100 KNOT-FT) INCREASING TO GOOD (90700  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 80. WEST WINDS  
AROUND 5 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 80S. WINDS  
GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
80S. SOUTH WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS AROUND 80.  
 

 
 
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