301  
FNUS55 KCYS 140815  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
215 AM MDT FRI MAY 14 2021  
   
DISCUSSION
 
 
SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOONS  
AND EVENINGS OVER THE NEXT SEVERAL DAYS AS A SERIES OF UPPER LEVEL  
DISTURBANCES MOVE NORTHWEST TO SOUTHEAST ACROSS THE REGION. ISOLATED  
DRY THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON WEST OF THE LARAMIE  
RANGE WHERE MINIMUM RELATIVE HUMIDITIES WILL BE IN THE 20S. ISOLATED  
STRONG TO MARGINALLY SEVERE THUNDERSTORMS ALONG AND EAST OF THE LARAMIE  
RANGE THIS AFTERNOON AND EARLY EVENING.  
 
WYZ301-142215-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS AFTER 1100 UNTIL 1200, THEN  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......EAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH.  
MIXING HEIGHT.......2300-3600 FT AGL INCREASING TO 5300-5900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (20000-48500 KNOT-FT).  
HAINES INDEX........2 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 THUNDERSTORMS.  
MIN TEMPERATURE.....40-45.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................3 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.  
MIXING HEIGHT.......2200-3800 FT AGL DECREASING TO 600-1100 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (5300-22800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......2200-2700 FT AGL INCREASING TO 4900-5800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (16800-58600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 60S.  
NORTHEAST WINDS AROUND 5 MPH.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS AROUND 70.  
SOUTHEAST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER  
70S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE  
LOWER 70S.  
 

 
 
WYZ302-142215-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS UNTIL 1200, THEN SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200 UNTIL  
1300. SOME THUNDERSTORMS MAY BE SEVERE AFTER  
1300.  
MAX TEMPERATURE.....57-63.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........38-44 PERCENT.  
24 HR TREND......24 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......2400-3000 FT AGL INCREASING TO 4600-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (20900-56900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2100, THEN CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 2400, THEN CHANCE OF SPRINKLES.  
MIN TEMPERATURE.....39-44.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................4 UNTIL 2100, THEN 3 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1000-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (10700-33500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS.  
MAX TEMPERATURE.....55-61.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........55-61 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL INCREASING TO 3700-5200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (17800-57000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.  
NORTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS  
AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID  
60S.  
 

 
 
WYZ303-142215-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF THUNDERSTORMS AFTER 1200 UNTIL 1300, THEN  
SLIGHT CHANCE OF DRY THUNDERSTORMS.  
MAX TEMPERATURE.....63-69.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........25-31 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE  
NORTHWEST IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1400-3300 FT AGL INCREASING TO 9400-11400 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (21100 KNOT-FT) INCREASING TO VERY GOOD  
(137000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR 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 CHANCE OF SPRINKLES.  
MIN TEMPERATURE.....38-43.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH.  
LAL.................4 UNTIL 2100, THEN 2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
MIXING HEIGHT.......700-2600 FT AGL.  
SMOKE DISPERSAL.....POOR (5600-15400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....62-68.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........35-41 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO SOUTHWEST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1300-1900 FT AGL INCREASING TO 6800-8800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (7000 KNOT-FT) INCREASING TO GOOD (87000  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S. NORTHEAST WINDS  
AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.  
EAST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SPRINKLES AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
60S.  
 

 
 
WYZ304-142215-  
SOUTHWEST CARBON COUNTY-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF DRY THUNDERSTORMS AFTER 1300.  
SLIGHT CHANCE OF SHOWERS AFTER 1400 UNTIL 1500.  
MAX TEMPERATURE.....66-71.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH AND GUSTY SHIFTING TO THE  
WEST WITH HIGHER GUSTS IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1200-2300 FT AGL INCREASING TO 11400-11900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10500 KNOT-FT) INCREASING TO EXCELLENT  
(156900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR 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  
SHOWERS AND THUNDERSTORMS UNTIL 2100, THEN  
SLIGHT CHANCE OF SHOWERS UNTIL 2400.  
MIN TEMPERATURE.....37-42.  
24 HR TREND......2 DEGREES WARMER.  
MAX HUMIDITY........80-86 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
NORTHEAST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH BECOMING NORTHEAST  
AROUND 10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......2000-2600 FT AGL DECREASING TO 600 FT AGL AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (4000-26700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SPRINKLES UNTIL 1200,  
THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....68-74.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2 UNTIL 1500, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH INCREASING TO SOUTHWEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1200-2000 FT AGL INCREASING TO 10100-11500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5700 KNOT-FT) INCREASING TO EXCELLENT  
(158200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.  
NORTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. NORTHEAST WINDS  
AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.  
WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER  
70S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE  
LOWER 70S.  
 

 
 
WYZ305-142215-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY CLOUDY  
UNTIL 1200, THEN PARTLY CLOUDY UNTIL 1500, THEN  
MOSTLY CLOUDY. SLIGHT CHANCE OF DRY  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....59-67.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........21-27 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......4200-5600 FT AGL INCREASING TO 10400-11700 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (71100 KNOT-FT) INCREASING TO EXCELLENT  
(173200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2100, THEN PARTLY CLOUDY.  
CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL 2100,  
THEN SLIGHT CHANCE OF SHOWERS UNTIL 2400.  
MIN TEMPERATURE.....35-41.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........69-75 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE SOUTHEAST  
AFTER MIDNIGHT. GUSTS UP TO 20 MPH.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH BECOMING SOUTHEAST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......500-2200 FT AGL.  
SMOKE DISPERSAL.....POOR (3200-21300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SPRINKLES UNTIL 1200,  
THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....59-69.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO AROUND 20  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2800-3700 FT AGL INCREASING TO 10200-11500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (25800 KNOT-FT) INCREASING TO EXCELLENT  
(185500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. EAST WINDS AROUND  
5 MPH.    
MONDAY
 
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.  
WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 60S.  
 

 
 
WYZ306-142215-  
UPPER NORTH PLATTE RIVER BASIN-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY CLOUDY. SLIGHT CHANCE  
OF DRY THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....66-71.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE WEST IN  
THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......2900-4900 FT AGL INCREASING TO 11200-12100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (40500 KNOT-FT) INCREASING TO EXCELLENT  
(174100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
CHANCE OF THUNDERSTORMS UNTIL 2100. CHANCE OF  
SHOWERS UNTIL 2400.  
MIN TEMPERATURE.....35-40.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......21 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTH 5 TO 10 MPH. GUSTS UP TO 20 MPH IN THE  
EVENING.  
LAL.................3 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......700-1900 FT AGL.  
SMOKE DISPERSAL.....POOR (2500-9700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SPRINKLES UNTIL 1200,  
THEN CHANCE OF SHOWERS AND THUNDERSTORMS.  
MAX TEMPERATURE.....65-70.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO AROUND 15  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1300-2200 FT AGL INCREASING TO 9500-10600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (9300 KNOT-FT) INCREASING TO VERY GOOD  
(138200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS AROUND 40. HIGHS IN THE UPPER 60S. EAST WINDS AROUND 5 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S. WINDS GENERALLY  
LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.  
WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S.  
 

 
 
WYZ307-142215-  
SNOWY RANGE/MEDICINE BOW NF-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS AFTER 1100 UNTIL 1200, THEN  
SLIGHT CHANCE OF DRY THUNDERSTORMS.  
MAX TEMPERATURE.....55-63.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........27-33 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......4600-5400 FT AGL INCREASING TO 8800-10300 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (90300 KNOT-FT) INCREASING TO EXCELLENT  
(150000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
CHANCE OF SHOWERS, THUNDERSTORMS AND SNOW  
SHOWERS UNTIL 2400.  
MIN TEMPERATURE.....32-38.  
24 HR TREND......3 DEGREES WARMER.  
MAX HUMIDITY........82-88 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 5 MPH SHIFTING TO THE SOUTH AFTER  
MIDNIGHT. GUSTS UP TO 15 MPH.  
LAL.................3 UNTIL 2100, THEN 2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
MIXING HEIGHT.......700-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (3500-13400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF FLURRIES UNTIL 0700.  
CHANCE OF SPRINKLES UNTIL 1200, THEN SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS.  
MAX TEMPERATURE.....55-61.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........36-42 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO SOUTHWEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2300-3800 FT AGL INCREASING TO 7400-9400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (29200 KNOT-FT) INCREASING TO VERY GOOD  
(127500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. EAST  
WINDS AROUND 5 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, THUNDERSTORMS AND  
FLURRIES. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS, THUNDERSTORMS AND  
FLURRIES. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS  
GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS, FLURRIES AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN  
THE UPPER 50S.  
 

 
 
WYZ308-142215-  
LARAMIE VALLEY/SHIRLEY BASIN-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS UNTIL 1200, THEN SHOWERS  
LIKELY AND SLIGHT CHANCE OF DRY THUNDERSTORMS.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE  
NORTHWEST IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3 UNTIL 1500, THEN 4.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-3700 FT AGL INCREASING TO 8900-10000 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (25200 KNOT-FT) INCREASING TO VERY GOOD  
(107500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY  
UNTIL 0300, THEN MOSTLY CLOUDY. SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS UNTIL 2100, THEN  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS UNTIL 2400. SOME THUNDERSTORMS  
MAY BE SEVERE UNTIL 2100.  
MIN TEMPERATURE.....36-41.  
24 HR TREND......3 DEGREES WARMER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................4 UNTIL 2100, THEN 2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (8800-25300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS UNTIL 1200,  
THEN SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........39-45 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......1500-2000 FT AGL INCREASING TO 5400-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11600 KNOT-FT) INCREASING TO GOOD (68000  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 60S. NORTHEAST  
WINDS AROUND 5 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS AROUND 40. HIGHS IN THE MID 60S. SOUTHEAST WINDS AROUND  
10 MPH.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S. SOUTHEAST  
WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S.  
 

 
 
WYZ309-142215-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS UNTIL 1200, THEN SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200.  
MAX TEMPERATURE.....60-66.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3 UNTIL 1500, THEN 4.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH SHIFTING TO THE  
NORTHWEST IN THE AFTERNOON.  
MIXING HEIGHT.......1800-2800 FT AGL INCREASING TO 5800-7800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (20000-60600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY  
UNTIL 2100, THEN CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS UNTIL 2400, THEN CHANCE  
OF SPRINKLES. SOME THUNDERSTORMS MAY BE SEVERE  
UNTIL 2100.  
MIN TEMPERATURE.....39-45.  
24 HR TREND......3 DEGREES WARMER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................4 UNTIL 2100, THEN 3 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......1100-2600 FT AGL.  
SMOKE DISPERSAL.....POOR (11600-20200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200, THEN SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1500.  
MAX TEMPERATURE.....57-62.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......24 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......1600-2300 FT AGL INCREASING TO 3800-4500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (14100-46200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 60. EAST WINDS  
AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS  
THAN 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE MID 60S.  
 

 
 
WYZ310-142215-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS UNTIL 1200, THEN SHOWERS  
LIKELY AND CHANCE OF THUNDERSTORMS. SOME  
THUNDERSTORMS MAY BE SEVERE AFTER 1200 UNTIL  
1300. SOME THUNDERSTORMS MAY BE SEVERE AFTER  
1300.  
MAX TEMPERATURE.....65-70.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........32-38 PERCENT.  
24 HR TREND......15 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 5 MPH INCREASING TO SOUTHEAST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1800-2700 FT AGL INCREASING TO 5600-6900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11000 KNOT-FT) INCREASING TO GOOD (63300  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS UNTIL 2400, THEN SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS.  
MIN TEMPERATURE.....43-48.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH.  
LAL.................4 UNTIL 2100, THEN 3 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......900-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (7800-28700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 1200, THEN SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS.  
MAX TEMPERATURE.....60-65.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......27 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-2400 FT AGL INCREASING TO 4200-4900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (15800-50300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 60S.  
NORTHEAST WINDS AROUND 5 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS  
THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
 

 
 
NEZ311-142215-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
ISOLATED SHOWERS AFTER 1100 UNTIL 1200, THEN  
CHANCE OF SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 1500.  
MAX TEMPERATURE.....65-70.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 5 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1 UNTIL 1500, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......1500-2100 FT AGL INCREASING TO 5500-6100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (12500-54000 KNOT-FT).  
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. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 2100.  
MIN TEMPERATURE.....42-47.  
24 HR TREND......5 DEGREES WARMER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH.  
LAL.................3 UNTIL 0300, THEN 2.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
MIXING HEIGHT.......700-2000 FT AGL.  
SMOKE DISPERSAL.....POOR (3500-13600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200. SLIGHT CHANCE OF THUNDERSTORMS AFTER 0900  
UNTIL 1200, THEN CHANCE OF SHOWERS AND  
THUNDERSTORMS.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......2200-2700 FT AGL INCREASING TO 5200-6100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (12900-49500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
CLOUDY WITH SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 60S. EAST WINDS AROUND  
10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.  
SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE  
LOWER 70S.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE  
LOWER 70S.  
 

 
 
NEZ312-142215-  
BOX BUTTE/SOUTH SIOUX-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
PATCHY FOG UNTIL 0800. SLIGHT CHANCE OF SHOWERS  
AFTER 1100 UNTIL 1300. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 1200. CHANCE OF SHOWERS  
AFTER 1300. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1200 UNTIL 1500.  
MAX TEMPERATURE.....66-71.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2 UNTIL 1500, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1200-2000 FT AGL INCREASING TO 6300-7100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11700 KNOT-FT) INCREASING TO GOOD (78200  
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 SHOWERS AND  
THUNDERSTORMS.  
MIN TEMPERATURE.....42-47.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 5 MPH.  
LAL.................3 UNTIL 0300, THEN 2.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH BECOMING SOUTHEAST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......800-2200 FT AGL.  
SMOKE DISPERSAL.....POOR (3800-25100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS UNTIL  
1200. SLIGHT CHANCE OF THUNDERSTORMS AFTER 0900  
UNTIL 1200, THEN SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS.  
MAX TEMPERATURE.....62-67.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........45-51 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 0900, THEN 2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......2100-2700 FT AGL INCREASING TO 5200-6000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (15500-50800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 40S. HIGHS IN THE MID 60S. EAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE  
LOWER 70S.  
 

 
 
NEZ313-142215-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
215 AM MDT FRI MAY 14 2021  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
PATCHY FOG UNTIL 0800. ISOLATED SHOWERS UNTIL  
1200, THEN SHOWERS LIKELY AND SLIGHT CHANCE OF  
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE SEVERE  
AFTER 1200 UNTIL 1500.  
MAX TEMPERATURE.....68-73.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......15 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2 UNTIL 1500, THEN 3.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......1100-1600 FT AGL INCREASING TO 6500-7500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (6900 KNOT-FT) INCREASING TO GOOD (74600  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SHOWERS LIKELY UNTIL 2400. CHANCE OF  
THUNDERSTORMS. CHANCE OF SHOWERS AFTER 2400.  
PATCHY FOG AFTER 0300.  
MIN TEMPERATURE.....43-48.  
24 HR TREND......3 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................3 UNTIL 0300, THEN 2.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....EAST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2400 FT AGL.  
SMOKE DISPERSAL.....POOR (5400-29800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 1200, THEN SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS.  
MAX TEMPERATURE.....63-68.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......22 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......1800-2400 FT AGL INCREASING TO 5000-6000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (14400-53900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 40S. HIGHS IN THE MID 60S. SOUTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS  
THAN 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.  
SOUTHEAST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 70.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.  
 

 
MAJ  
 
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