493  
FNUS55 KCYS 241247  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
647 AM MDT TUE APR 24 2018  
   
DISCUSSION
 
 
DESPITE BREEZY CONDITIONS, NO FIRE WEATHER CONCERNS FOR TODAY WITH  
COOLER TEMPERATURES KEEPING RH VALUES WELL OUTSIDE OF OUR CRITICAL  
THRESHOLDS. CONSIDERABLY WARMER AND DRIER FOR WEDNESDAY, BUT WE DO  
NOT EXPECT WINDS TO BE PARTICULARLY STRONG. MINIMUM RH VALUES WEST  
OF THE LARAMIE RANGE WILL LIKELY BE AS LOW AS 10 PERCENT ON WED.  
 
WYZ301-242215-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
SLIGHT CHANCE OF SHOWERS AFTER 1300.  
MAX TEMPERATURE.....42-47.  
24 HR TREND......19 DEGREES COOLER.  
MIN HUMIDITY........45-51 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH 20 TO 25 MPH.  
MIXING HEIGHT.......4000-6000 FT AGL.  
SMOKE DISPERSAL.....GOOD (95100-97100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR.  
MIN TEMPERATURE.....24-29.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH  
AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING NORTHWEST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......4100-5000 FT AGL DECREASING TO 1300-1800 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....FAIR (57900 KNOT-FT) DECREASING TO POOR (6700  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....66-71.  
24 HR TREND......23 DEGREES WARMER.  
MIN HUMIDITY........13-19 PERCENT.  
24 HR TREND......31 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......2100-2900 FT AGL INCREASING TO 6000-7500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (20600-66200 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND  
15 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 70S.  
WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE MID 60S.  
 

 
 
WYZ302-242215-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....34-40.  
24 HR TREND......17 DEGREES COOLER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH 20 TO 25 MPH.  
MIXING HEIGHT.......2700-3900 FT AGL INCREASING TO 4700-5900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (69600-85500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR.  
MIN TEMPERATURE.....21-26.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........81-87 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE WEST AFTER  
MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHWEST AROUND  
10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......3300-4400 FT AGL DECREASING TO 1200-1900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (11700-59000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....58-66.  
24 HR TREND......25 DEGREES WARMER.  
MIN HUMIDITY........13-19 PERCENT.  
24 HR TREND......43 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH. GUSTS UP TO 15 MPH  
INCREASING TO 25 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH.  
MIXING HEIGHT.......1900-2900 FT AGL INCREASING TO 7400-8400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (15500-63900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT  
CHANCE OF SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S.  
NORTHWEST WINDS AROUND 15 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S.  
WEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE  
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.  
 

 
 
WYZ303-242215-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....39-45.  
24 HR TREND......15 DEGREES COOLER.  
MIN HUMIDITY........36-42 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......3000-3900 FT AGL INCREASING TO 6000-7100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (58300-84000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR.  
MIN TEMPERATURE.....21-26.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........78-84 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHEAST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING NORTHWEST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......3800-4700 FT AGL DECREASING TO 1300-1900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (6200-51400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....60-66.  
24 HR TREND......19 DEGREES WARMER.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......28 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY INCREASING TO  
AROUND 15 MPH WITH HIGHER GUSTS IN THE  
AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
MIXING HEIGHT.......1700-2500 FT AGL INCREASING TO 7700-9000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14100 KNOT-FT) INCREASING TO GOOD (79800  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. NORTH WINDS  
AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S.  
SOUTH WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER  
60S. SOUTHWEST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER  
50S.  
 

 
 
WYZ304-242215-  
SOUTHWEST CARBON COUNTY-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY SUNNY.  
MAX TEMPERATURE.....47-52.  
24 HR TREND......14 DEGREES COOLER.  
MIN HUMIDITY........23-29 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 25 MPH DECREASING TO AROUND 15  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2700-3200 FT AGL INCREASING TO 8300-10200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (62000 KNOT-FT) INCREASING TO VERY GOOD  
(135100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........80-86 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH. GUSTS UP TO 25 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH DECREASING TO AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......4400-4900 FT AGL DECREASING TO 900-1400 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (67300 KNOT-FT) DECREASING TO POOR (7200  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......17 DEGREES WARMER.  
MIN HUMIDITY........7-13 PERCENT.  
24 HR TREND......15 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......2200-2700 FT AGL INCREASING TO 6700-7600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (4300-51400 KNOT-FT).  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE  
UPPER 50S. NORTH WINDS AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE MID 60S.  
SOUTHEAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE  
UPPER 60S. SOUTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS AROUND 60.  
 

 
 
WYZ305-242215-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1200.  
MAX TEMPERATURE.....38-46.  
24 HR TREND......10 DEGREES COOLER.  
MIN HUMIDITY........39-45 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL INCREASING TO 7200-9200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (36600 KNOT-FT) INCREASING TO GOOD (90800  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........72-78 PERCENT.  
24 HR TREND......18 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......2900-4100 FT AGL DECREASING TO 1300-1900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (13400-44100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....52-60.  
24 HR TREND......13 DEGREES WARMER.  
MIN HUMIDITY........18-24 PERCENT.  
24 HR TREND......23 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST  
AND GUSTY IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE NORTHWEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......2000-2800 FT AGL INCREASING TO 6400-8000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (11100-44800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 30. HIGHS IN THE LOWER 50S. NORTH WINDS AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 50S.  
SOUTHEAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER  
60S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 30S. HIGHS IN THE UPPER 50S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
IN THE MID 30S. HIGHS IN THE LOWER 50S.  
 

 
 
WYZ306-242215-  
UPPER NORTH PLATTE RIVER BASIN-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....43-48.  
24 HR TREND......17 DEGREES COOLER.  
MIN HUMIDITY........32-38 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......3400-3900 FT AGL INCREASING TO 7000-8900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (46500-80600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 2400, THEN CLEAR.  
MIN TEMPERATURE.....21-26.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........78-84 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHEAST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH DECREASING TO AROUND 5 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......4600-5100 FT AGL DECREASING TO 1800-2300 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (7700-53200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......18 DEGREES WARMER.  
MIN HUMIDITY........10-16 PERCENT.  
24 HR TREND......20 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST AND  
GUSTY IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH.  
MIXING HEIGHT.......2500-3000 FT AGL INCREASING TO 8400-9300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10300 KNOT-FT) INCREASING TO GOOD (63300  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. NORTHWEST WINDS  
AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S.  
SOUTH WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER  
60S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 30S. HIGHS IN THE LOWER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER  
50S.  
 

 
 
WYZ307-242215-  
SNOWY RANGE/MEDICINE BOW NF-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....32-40.  
24 HR TREND......23 DEGREES COOLER.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
MIXING HEIGHT.......2000-3100 FT AGL INCREASING TO 4900-6900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (28800-54200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR.  
MIN TEMPERATURE.....18-23.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........77-83 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST AFTER MIDNIGHT. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
MIXING HEIGHT.......3300-4600 FT AGL DECREASING TO 1300-2000 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (11000-43100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....51-57.  
24 HR TREND......20 DEGREES WARMER.  
MIN HUMIDITY........13-19 PERCENT.  
24 HR TREND......34 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH. GUSTS UP TO 20 MPH IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......2000-2800 FT AGL INCREASING TO 7900-9300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (16600-64200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN  
THE UPPER 20S. HIGHS IN THE UPPER 40S. NORTHWEST WINDS AROUND  
10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE MID 20S. HIGHS IN THE MID 50S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS AROUND 60. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS, THUNDERSTORMS  
AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S.  
 

 
 
WYZ308-242215-  
LARAMIE VALLEY/SHIRLEY BASIN-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......24 DEGREES COOLER.  
MIN HUMIDITY........43-49 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH 15 TO 20 MPH.  
MIXING HEIGHT.......3200-3800 FT AGL INCREASING TO 5500-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (53800-71200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........84-90 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......4000-4900 FT AGL DECREASING TO 1700-2300 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (14100-53000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......22 DEGREES WARMER.  
MIN HUMIDITY........10-16 PERCENT.  
24 HR TREND......34 PERCENT DRIER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH. GUSTS UP TO 15 MPH INCREASING  
TO 25 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
MIXING HEIGHT.......2000-2900 FT AGL INCREASING TO 8000-8800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (20000 KNOT-FT) INCREASING TO GOOD (70800  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. NORTHWEST  
WINDS AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 50S.  
 

 
 
WYZ309-242215-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....36-42.  
24 HR TREND......27 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......19 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH 20 TO 25 MPH.  
MIXING HEIGHT.......2600-4000 FT AGL INCREASING TO 4700-6200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (73700-89300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN MOSTLY CLEAR.  
MIN TEMPERATURE.....21-26.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
WEST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.  
MIXING HEIGHT.......3600-4600 FT AGL DECREASING TO 1900-2400 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO GOOD (24700-70000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....58-66.  
24 HR TREND......23 DEGREES WARMER.  
MIN HUMIDITY........12-18 PERCENT.  
24 HR TREND......38 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......2400-3500 FT AGL INCREASING TO 7300-8300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (30000-59100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. NORTHWEST  
WINDS AROUND 15 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60.  
 

 
 
WYZ310-242215-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
SLIGHT CHANCE OF SHOWERS AFTER 1100.  
MAX TEMPERATURE.....41-46.  
24 HR TREND......24 DEGREES COOLER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......23 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 15 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 30 MPH DECREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......3400-4400 FT AGL INCREASING TO 5200-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD (100000-107900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
WEST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHWEST AROUND  
10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......4000-4800 FT AGL DECREASING TO 1900-2400 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (72900 KNOT-FT) DECREASING TO POOR (22900  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....63-69.  
24 HR TREND......26 DEGREES WARMER.  
MIN HUMIDITY........15-21 PERCENT.  
24 HR TREND......37 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
MIXING HEIGHT.......3000-3600 FT AGL INCREASING TO 5900-7000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (29400-42100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE MID 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND  
15 MPH.    
FRIDAY
 
CLEAR. LOWS AROUND 30. HIGHS IN THE MID 60S. SOUTHWEST  
WINDS AROUND 5 MPH.    
SATURDAY
 
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 70S.  
WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 70S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.  
 

 
 
NEZ311-242215-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
MAX TEMPERATURE.....39-44.  
24 HR TREND......27 DEGREES COOLER.  
MIN HUMIDITY........60-66 PERCENT.  
24 HR TREND......33 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 30 MPH DECREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......3600-5600 FT AGL.  
SMOKE DISPERSAL.....GOOD TO VERY GOOD (94500-103200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE WEST AFTER  
MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHWEST AROUND  
10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......1800-3800 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (15700-51900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......28 DEGREES WARMER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......43 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......2600-3200 FT AGL INCREASING TO 4900-5500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14800-38800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND  
15 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE MID 60S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 70S.  
SOUTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE LOWER  
70S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE LOWER 40S. HIGHS IN THE UPPER 60S.  
 

 
 
NEZ312-242215-  
BOX BUTTE/SOUTH SIOUX-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS AND SHOWERS  
UNTIL 1200, THEN SLIGHT CHANCE OF SHOWERS AND  
SNOW SHOWERS.  
MAX TEMPERATURE.....40-45.  
24 HR TREND......25 DEGREES COOLER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......24 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 15 TO 20 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 35 MPH DECREASING TO AROUND 25 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......3700-5700 FT AGL.  
SMOKE DISPERSAL.....VERY GOOD (109600-112700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY.  
MIN TEMPERATURE.....24-29.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH. GUSTS UP TO 25 MPH IN  
THE EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 15 TO 20 MPH.  
MIXING HEIGHT.......1800-3700 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (23800-58400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......21 DEGREES WARMER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......36 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON.  
MIXING HEIGHT.......2700-3200 FT AGL INCREASING TO 5000-5500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (20600-28500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND  
15 MPH.    
FRIDAY
 
CLEAR. LOWS AROUND 30. HIGHS IN THE MID 60S. SOUTHWEST  
WINDS AROUND 5 MPH.    
SATURDAY
 
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S.  
SOUTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS  
AROUND 40. HIGHS IN THE UPPER 60S.  
 

 
 
NEZ313-242215-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
647 AM MDT TUE APR 24 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS UNTIL  
1600. SLIGHT CHANCE OF SHOWERS. SLIGHT CHANCE  
OF SNOW SHOWERS AFTER 1700.  
MAX TEMPERATURE.....42-47.  
24 HR TREND......24 DEGREES COOLER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 20 MPH WITH GUSTS TO AROUND 35  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH 25 TO 30 MPH.  
MIXING HEIGHT.......3500-5500 FT AGL.  
SMOKE DISPERSAL.....GOOD TO VERY GOOD (98300-121400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
MIN TEMPERATURE.....24-29.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 25 MPH BECOMING NORTHWEST AROUND  
15 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......3100-4400 FT AGL DECREASING TO 1900-2400 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO GOOD (31700-75700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......18 DEGREES WARMER.  
MIN HUMIDITY........23-29 PERCENT.  
24 HR TREND......33 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING NORTHWEST AROUND 5  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......3000-3500 FT AGL INCREASING TO 5200-5700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (20800-38900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE MID 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND  
15 MPH.    
FRIDAY
 
CLEAR. LOWS AROUND 30. HIGHS IN THE MID 60S. SOUTHWEST  
WINDS AROUND 5 MPH.    
SATURDAY
 
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S.  
SOUTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 60S.  
 

 
 
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