744  
FNUS55 KCYS 251058  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
458 AM MDT THU MAY 25 2017  
   
DISCUSSION
 
 
NO FIRE WEATHER CONCERNS. A COOL AND UNSETTLED WEATHER PATTERN WILL  
PREVAIL OVER THE NEXT SEVERAL DAYS, LIKELY LEADING TO A GOOD CHANCE  
FOR WIDESPREAD WETTING RAINS.  
 
WYZ301-252215-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....64-69.  
24 HR TREND......16 DEGREES COOLER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH. GUSTS UP TO 25 MPH IN  
THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-3200 FT AGL INCREASING TO 8300-9300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (25300 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.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 2100. SLIGHT CHANCE OF SHOWERS UNTIL  
2400.  
MIN TEMPERATURE.....38-43.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........82-88 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH.  
LAL.................2 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH.  
MIXING HEIGHT.......1400-3400 FT AGL.  
SMOKE DISPERSAL.....POOR (20400-35900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....57-62.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........39-45 PERCENT.  
24 HR TREND......19 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......3600-4600 FT AGL INCREASING TO 5700-7700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14900-25400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.  
NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.  
NORTHWEST WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS AROUND 70.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
WYZ302-252215-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....58-64.  
24 HR TREND......11 DEGREES COOLER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......1900-3000 FT AGL INCREASING TO 7100-8600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (43000 KNOT-FT) INCREASING TO VERY GOOD  
(148000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. CHANCE OF  
THUNDERSTORMS UNTIL 2100. CHANCE OF SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF SHOWERS AND  
SNOW SHOWERS.  
MIN TEMPERATURE.....33-39.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........86-92 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 20 MPH IN THE  
EVENING.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE NORTHEAST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......1400-3400 FT AGL.  
SMOKE DISPERSAL.....POOR (12400-25300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1200, THEN  
SHOWERS AND THUNDERSTORMS LIKELY.  
MAX TEMPERATURE.....49-55.  
24 HR TREND......10 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......2100-4100 FT AGL.  
SMOKE DISPERSAL.....POOR (12700-26400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS, THUNDERSTORMS AND SNOW  
SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 50S. NORTH WINDS  
AROUND 5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. NORTHWEST WINDS  
AROUND 10 MPH.    
MEMORIAL DAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.  
 

 
 
WYZ303-252215-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY CLOUDY. CHANCE OF  
SHOWERS. CHANCE OF THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......2100-3000 FT AGL INCREASING TO 7900-9500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (46700 KNOT-FT) INCREASING TO EXCELLENT  
(185000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF THUNDERSTORMS UNTIL 2100. SLIGHT CHANCE OF  
SHOWERS.  
MIN TEMPERATURE.....34-39.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........80-86 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE SOUTHEAST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTH AFTER  
MIDNIGHT.  
MIXING HEIGHT.......2300-4300 FT AGL DECREASING TO 600-1100 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (5900-31100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....52-57.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1000-1900 FT AGL INCREASING TO 5500-7500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (8500 KNOT-FT) INCREASING TO GOOD (98300  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLOUDY WITH SHOWERS AND THUNDERSTORMS LIKELY.  
LOWS IN THE UPPER 30S. HIGHS IN THE MID 50S. NORTH WINDS AROUND  
5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.  
NORTHWEST WINDS AROUND 5 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS AROUND 70.  
 

 
 
WYZ304-252215-  
SOUTHWEST CARBON COUNTY-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........25-31 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2200-2700 FT AGL INCREASING TO 5400-7400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28600 KNOT-FT) INCREASING TO VERY GOOD  
(102100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF THUNDERSTORMS UNTIL 2100.  
SLIGHT CHANCE OF SHOWERS.  
MIN TEMPERATURE.....35-40.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY SHIFTING TO THE  
SOUTHEAST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTH AFTER  
MIDNIGHT.  
MIXING HEIGHT.......3200-5200 FT AGL DECREASING TO 400-900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (4400-45400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....55-61.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........35-41 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST  
WITH HIGHER GUSTS IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH INCREASING TO SOUTHWEST  
AROUND 30 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1500-3200 FT AGL INCREASING TO 12800-14100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (24700 KNOT-FT) INCREASING TO EXCELLENT  
(363200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S.  
NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID  
60S. NORTHEAST WINDS AROUND 5 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE  
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS AROUND 40. HIGHS AROUND 70.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.  
 

 
 
WYZ305-252215-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....53-59.  
24 HR TREND......11 DEGREES COOLER.  
MIN HUMIDITY........40-46 PERCENT.  
24 HR TREND......15 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......1700-2700 FT AGL INCREASING TO 5500-7200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (32300 KNOT-FT) INCREASING TO VERY GOOD  
(114100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. CHANCE OF  
THUNDERSTORMS UNTIL 2100. CHANCE OF SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF SHOWERS AND  
SNOW SHOWERS.  
MIN TEMPERATURE.....33-38.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........74-80 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE SOUTH AFTER  
MIDNIGHT. GUSTS UP TO 20 MPH.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......1000-3000 FT AGL.  
SMOKE DISPERSAL.....POOR (10700-28100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1200, THEN  
SHOWERS AND THUNDERSTORMS LIKELY.  
MAX TEMPERATURE.....50-56.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 5.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND 35  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1600-3200 FT AGL INCREASING TO 10500-12500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (30200 KNOT-FT) INCREASING TO EXCELLENT  
(348600 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS, THUNDERSTORMS AND SNOW  
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 50S. NORTHWEST  
WINDS AROUND 5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. NORTH  
WINDS AROUND 5 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.  
 

 
 
WYZ306-252215-  
UPPER NORTH PLATTE RIVER BASIN-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....59-64.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......19 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2600-3400 FT AGL INCREASING TO 8600-9400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (41400 KNOT-FT) INCREASING TO EXCELLENT  
(168000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF THUNDERSTORMS UNTIL 2100. SLIGHT CHANCE OF  
SHOWERS.  
MIN TEMPERATURE.....34-39.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........74-80 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY SHIFTING TO THE  
SOUTH AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......700-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (6500-18300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....54-59.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH INCREASING TO SOUTHWEST  
AROUND 30 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1200-1700 FT AGL INCREASING TO 11800-13500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (12200 KNOT-FT) INCREASING TO EXCELLENT  
(334500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 30S. HIGHS IN THE MID 50S. NORTHWEST WINDS AROUND  
5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60. NORTHWEST  
WINDS AROUND 5 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID 60S. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 60S.  
 

 
 
WYZ307-252215-  
SNOWY RANGE/MEDICINE BOW NF-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....52-58.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........38-44 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....WEST 25 TO 30 MPH.  
MIXING HEIGHT.......2200-3500 FT AGL INCREASING TO 6500-8500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (62500 KNOT-FT) INCREASING TO EXCELLENT  
(175100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. CHANCE OF  
THUNDERSTORMS UNTIL 2100. CHANCE OF SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF SHOWERS AND  
SNOW SHOWERS.  
MIN TEMPERATURE.....31-36.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........77-83 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1000-3000 FT AGL.  
SMOKE DISPERSAL.....POOR (19700-34500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1200, THEN  
SHOWERS AND THUNDERSTORMS LIKELY.  
MAX TEMPERATURE.....47-53.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........45-51 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 5.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO AROUND 30  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1300-2000 FT AGL INCREASING TO 10000-11900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (16700 KNOT-FT) INCREASING TO EXCELLENT  
(293700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH SHOWERS, THUNDERSTORMS LIKELY AND CHANCE  
OF SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S.  
WEST WINDS AROUND 5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. NORTHWEST WINDS  
AROUND 5 MPH.    
MEMORIAL DAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 50S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S.  
 

 
 
WYZ308-252215-  
LARAMIE VALLEY/SHIRLEY BASIN-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......10 DEGREES COOLER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......3000-4400 FT AGL INCREASING TO 8100-9400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (68200 KNOT-FT) INCREASING TO EXCELLENT  
(191800 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. CHANCE OF  
THUNDERSTORMS UNTIL 2100. CHANCE OF SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF SHOWERS.  
MIN TEMPERATURE.....33-38.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........84-90 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE SOUTHEAST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTHEAST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (4400-18700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1200, THEN  
SHOWERS AND THUNDERSTORMS LIKELY.  
MAX TEMPERATURE.....52-57.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......19 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......1300-2000 FT AGL INCREASING TO 6200-8200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (12900 KNOT-FT) INCREASING TO VERY GOOD  
(127300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 30S. HIGHS IN THE LOWER 50S. NORTH WINDS AROUND 5 MPH.   
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60. NORTHWEST  
WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.  
 

 
 
WYZ309-252215-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY PRODUCE GUSTY WINDS, AND SMALL HAIL AFTER  
1200.  
MAX TEMPERATURE.....62-68.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......1900-3300 FT AGL INCREASING TO 7700-9500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (46800 KNOT-FT) INCREASING TO EXCELLENT  
(154500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2100. CHANCE OF SHOWERS UNTIL 2400, THEN SLIGHT  
CHANCE OF SHOWERS.  
MIN TEMPERATURE.....36-41.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........82-88 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH. GUSTS UP TO 25 MPH IN  
THE EVENING.  
LAL.................3 UNTIL 2100, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH BECOMING NORTH AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (6200-21700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1200, THEN  
SHOWERS AND THUNDERSTORMS LIKELY. SOME  
THUNDERSTORMS MAY PRODUCE DAMAGING WINDS, AND  
LARGE HAIL AFTER 1200.  
MAX TEMPERATURE.....53-58.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......21 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......1200-2800 FT AGL INCREASING TO 3400-5400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (10100-59400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
AROUND 40. HIGHS IN THE MID 50S. NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS AROUND 60. NORTHWEST  
WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.  
 

 
 
WYZ310-252215-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
SOME THUNDERSTORMS MAY PRODUCE GUSTY WINDS, AND  
SMALL HAIL AFTER 1200.  
MAX TEMPERATURE.....68-73.  
24 HR TREND......14 DEGREES COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......1300-1900 FT AGL INCREASING TO 7700-9200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (17700 KNOT-FT) INCREASING TO GOOD (95200  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS UNTIL  
2100. CHANCE OF SHOWERS UNTIL 2400. ISOLATED  
THUNDERSTORMS AFTER 2100 UNTIL 2400.  
MIN TEMPERATURE.....40-45.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........81-87 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH.  
LAL.................3 UNTIL 2100, THEN 2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......1400-3400 FT AGL DECREASING TO 700-1400 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (7500-20000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
SOME THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL AFTER 1200.  
MAX TEMPERATURE.....58-63.  
24 HR TREND......10 DEGREES COOLER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......27 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......3200-5200 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (9800-41800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 40S. HIGHS AROUND 60. NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.  
NORTHWEST WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
NEZ311-252215-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY.  
MAX TEMPERATURE.....67-72.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......1200-1900 FT AGL INCREASING TO 5900-7900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (14300-64200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF THUNDERSTORMS UNTIL 2100.  
SLIGHT CHANCE OF SHOWERS UNTIL 2400.  
MIN TEMPERATURE.....41-46.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH.  
LAL.................3 UNTIL 2100, THEN 2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (6200-19800 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 5 MPH SHIFTING TO THE SOUTH IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......3000-4200 FT AGL INCREASING TO 6800-8300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (18000-29000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 40S. HIGHS IN THE MID 60S. NORTH WINDS AROUND 5 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
NORTHWEST WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE  
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
NEZ312-252215-  
BOX BUTTE/SOUTH SIOUX-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY PRODUCE GUSTY WINDS, AND SMALL HAIL AFTER  
1200.  
MAX TEMPERATURE.....68-73.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......900-1400 FT AGL INCREASING TO 4600-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (12000-39900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL 2400,  
THEN SLIGHT CHANCE OF SHOWERS AND ISOLATED  
THUNDERSTORMS.  
MIN TEMPERATURE.....40-45.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........79-85 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTH AROUND 5 MPH.  
LAL.................3 UNTIL 2100, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......2500-4200 FT AGL DECREASING TO 600 FT AGL AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (5000-22700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS UNTIL 1200, THEN  
CHANCE OF SHOWERS AND THUNDERSTORMS. SOME  
THUNDERSTORMS MAY PRODUCE DAMAGING WINDS, AND  
LARGE HAIL AFTER 1200.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH IN  
THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH IN  
THE AFTERNOON.  
MIXING HEIGHT.......2800-3500 FT AGL INCREASING TO 5800-7400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (10800-45100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 40S. HIGHS IN THE LOWER 60S. NORTH WINDS AROUND 5 MPH.   
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
NEZ313-252215-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
458 AM MDT THU MAY 25 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS UNTIL 1200, THEN  
CHANCE OF SHOWERS AND THUNDERSTORMS. SOME  
THUNDERSTORMS MAY PRODUCE GUSTY WINDS, AND  
SMALL HAIL AFTER 1200.  
MAX TEMPERATURE.....70-75.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1100-1600 FT AGL INCREASING TO 3600-5600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (19000-32000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
SHOWERS AND ISOLATED THUNDERSTORMS. SOME  
THUNDERSTORMS MAY PRODUCE GUSTY WINDS, AND  
SMALL HAIL UNTIL 2100.  
MIN TEMPERATURE.....42-47.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 5 MPH.  
LAL.................3 UNTIL 2100, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH.  
MIXING HEIGHT.......800-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (5300-12500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS UNTIL 1200, THEN  
CHANCE OF SHOWERS AND THUNDERSTORMS. SOME  
THUNDERSTORMS MAY BE SEVERE WITH DAMAGING  
WINDS, AND LARGE HAIL AFTER 1200.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........46-52 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1900-2900 FT AGL INCREASING TO 3600-5600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10300-38800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SATURDAY
 
CLOUDY WITH SHOWERS AND THUNDERSTORMS LIKELY. LOWS IN  
THE MID 40S. HIGHS IN THE LOWER 60S. NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND  
70. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS AROUND 70.   
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
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