674  
FNUS55 KCYS 090755  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING FWZ 302 THROUGH 309...  
 
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING FWZ 303 THROUGH 308...  
   
DISCUSSION
 
 
A COLD FRONT APPROACHING THE AREA FROM THE NORTH TODAY WILL  
INCREASE WINDS OVER OUR WESTERN FIRE WEATHER ZONES BY MID MORNING  
THROUGH THE AFTERNOON. RED FLAG WARNINGS ARE IN EFFECT FOR FWZS  
302 THROUGH 309 FROM 9 AM THROUGH 8PM. FRONT STALLS ALONG THE EAST  
SLOPES OF THE LARAMIE RANGE THROUGH MONDAY BEFORE SHIFTING  
EASTWARD TUESDAY AND WEDNESDAY. WEST OF THE FRONT...GUSTY WEST  
WINDS AND VERY DRY AIR REMAINS IN PLACE FOR CRITICAL FIRE WEATHER  
CONDITIONS AGAIN MONDAY AND POSSIBLY BEYOND. A FIRE WEATHER WATCH  
IS IN EFFECT FOR MONDAY FOR FWZS 303 THROUGH 308. AS FRONT MOVES  
EAST INTO CENTRAL NEBRASKA TUESDAY...THE VERY DRY AIR SHIFTS EAST  
OF THE LARAMIE RANGE...RESULTING IN POSSIBLE CRITICAL FIRE WEATHER  
CONDITIONS INTO THE NEBRASKA PANHANDLE TUESDAY AFTERNOON.  
 
WYZ301-092230-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
155 AM MDT SUN AUG 9 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....84-89.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........13-19 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.  
MIXING HEIGHT.......1700-3200 FT AGL INCREASING TO 8100-10100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (35500 KNOT-FT) INCREASING TO VERY GOOD  
(125200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 2100.  
MIN TEMPERATURE.....53-58.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........66-72 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH.  
MIXING HEIGHT.......1900-3900 FT AGL.  
SMOKE DISPERSAL.....POOR (27900-32100 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....83-88.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........17-23 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON.  
MIXING HEIGHT.......3300-4100 FT AGL INCREASING TO 7100-9100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (45200-89600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS AROUND 90.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S.  
 

 
 
WYZ302-092230-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....79-87.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........7-13 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 15 MPH THROUGH 9AM. THEN  
INCREASING TO 15 TO 20MPH SUSTAINED WITH GUSTS  
TO 40 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......6400-8400 FT AGL INCREASING TO 13800-15700 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD (102100 KNOT-FT) INCREASING TO  
EXCELLENT (228200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....50-56.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........59-65 PERCENT.  
24 HR TREND......29 PERCENT WETTER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......EAST 5 TO 10 MPH. GUSTS UP TO 30 MPH DECREASING  
TO 20 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1500-3500 FT AGL.  
SMOKE DISPERSAL.....POOR (22000-27000 KNOT-FT).  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 1200.  
MAX TEMPERATURE.....76-82.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........16-22 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON.  
MIXING HEIGHT.......1900-3000 FT AGL INCREASING TO 10400-12400 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (27500 KNOT-FT) INCREASING TO EXCELLENT  
(191000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 80S. WEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 80S. WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
70S.  
 

 
 
WYZ303-092230-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....83-88.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........3-9 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......WEST 15 TO 20 MPH WITH GUSTS TO AROUND 40 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2300-4300 FT AGL INCREASING TO 15100-16500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (41800 KNOT-FT) INCREASING TO EXCELLENT  
(282300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....50-55.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........48-54 PERCENT.  
24 HR TREND......27 PERCENT WETTER.  
HUMIDITY RECOVERY...POOR.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH GUSTS TO AROUND 35 MPH  
SHIFTING TO THE EAST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE EAST AFTER  
MIDNIGHT.  
MIXING HEIGHT.......6400-8400 FT AGL DECREASING TO 600-1200 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....VERY GOOD (103300 KNOT-FT) DECREASING TO POOR  
(7900 KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........7-13 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH WITH HIGHER GUSTS  
INCREASING TO WEST AROUND 20 MPH WITH GUSTS TO  
AROUND 35 MPH IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1600-3600 FT AGL INCREASING TO 14200-16200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (21400 KNOT-FT) INCREASING TO EXCELLENT  
(269800 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
LOWER 80S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
LOWER 80S.  
 

 
 
WYZ304-092230-  
SOUTHWEST CARBON COUNTY-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....85-90.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........8 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH WITH HIGHER GUSTS SHIFTING  
TO THE SOUTHWEST WITH GUSTS TO AROUND 35 MPH IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2100 FT AGL INCREASING TO 15700-16800 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11500 KNOT-FT) INCREASING TO EXCELLENT  
(218700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....48-53.  
24 HR TREND......2 DEGREES WARMER.  
MAX HUMIDITY........37-43 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
HUMIDITY RECOVERY...POOR.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY SHIFTING TO THE  
NORTHEAST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH BECOMING NORTHEAST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......7400-9400 FT AGL DECREASING TO 500-1000 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (99800 KNOT-FT) DECREASING TO POOR (3400  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....85-90.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........7-13 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH WITH HIGHER GUSTS SHIFTING  
TO THE WEST WITH GUSTS TO AROUND 35 MPH IN THE  
AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO WEST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1300-3100 FT AGL INCREASING TO 16300-17200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10500 KNOT-FT) INCREASING TO EXCELLENT  
(236100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
UPPER 80S. SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE MID 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE MID 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE MID 80S.  
 

 
 
WYZ305-092230-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....75-83.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........4-10 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 20 MPH IN THE AFTERNOON. GUSTS UP TO 35  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......6400-8400 FT AGL INCREASING TO 14600-16300 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (88700 KNOT-FT) INCREASING TO EXCELLENT  
(226400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....48-54.  
24 HR TREND......2 DEGREES WARMER.  
MAX HUMIDITY........28-34 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
HUMIDITY RECOVERY...POOR.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE SOUTH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......5600-7600 FT AGL DECREASING TO 900-2900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (87700 KNOT-FT) DECREASING TO POOR (16500  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....74-84.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........7-13 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH WITH HIGHER GUSTS  
INCREASING TO WEST AROUND 20 MPH WITH GUSTS TO  
AROUND 35 MPH IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......6700-8700 FT AGL INCREASING TO 14700-16300 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (85900 KNOT-FT) INCREASING TO EXCELLENT  
(225000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
UPPER 70S. SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
UPPER 70S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE UPPER 70S.  
SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER  
70S.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE UPPER 70S.  
 

 
 
WYZ306-092230-  
UPPER NORTH PLATTE RIVER BASIN-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....83-88.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........8 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 15 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON. GUSTS UP TO 35 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......3200-5200 FT AGL INCREASING TO 15800-17500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (42000 KNOT-FT) INCREASING TO EXCELLENT  
(249400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....49-54.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........33-39 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
HUMIDITY RECOVERY...POOR.  
20-FOOT WINDS.......SOUTH 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.....WEST AROUND 15 MPH BECOMING SOUTHWEST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......5600-7600 FT AGL DECREASING TO 700-1900 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (81600 KNOT-FT) DECREASING TO POOR (8400  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........11 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH WITH HIGHER GUSTS  
INCREASING TO WEST AROUND 20 MPH WITH GUSTS TO  
AROUND 35 MPH IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......3400-5400 FT AGL INCREASING TO 15800-16900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (39400 KNOT-FT) INCREASING TO EXCELLENT  
(249300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S. SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
MID 80S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 80S.  
 

 
 
WYZ307-092230-  
SNOWY RANGE/MEDICINE BOW NF-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....73-81.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........5-11 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......WEST 15 TO 20 MPH WITH GUSTS TO AROUND 40 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......6900-8900 FT AGL INCREASING TO 14700-16700 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD (114700 KNOT-FT) INCREASING TO  
EXCELLENT (241700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....42-50.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........37-43 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
HUMIDITY RECOVERY...POOR.  
20-FOOT WINDS.......SOUTHWEST 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.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......5000-7000 FT AGL DECREASING TO 2600-4600 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO GOOD (39600-74500 KNOT-FT).  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 1200.  
MAX TEMPERATURE.....72-80.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........9-15 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 20 MPH IN THE AFTERNOON. GUSTS UP TO 35  
MPH.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......5600-7600 FT AGL INCREASING TO 14100-16100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (98900 KNOT-FT) INCREASING TO EXCELLENT  
(239800 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE  
MID 70S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID  
70S. SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID  
70S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID  
70S.  
 

 
 
WYZ308-092230-  
LARAMIE VALLEY/SHIRLEY BASIN-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....83-88.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........9 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 20 MPH IN THE AFTERNOON. GUSTS UP TO 40  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2200-4200 FT AGL INCREASING TO 15400-17400 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (37200 KNOT-FT) INCREASING TO EXCELLENT  
(261300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....46-51.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........61-67 PERCENT.  
24 HR TREND......30 PERCENT WETTER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH GUSTS TO AROUND 35 MPH  
SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE SOUTHEAST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......3500-5500 FT AGL DECREASING TO 1000-1500 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (14500-37900 KNOT-FT).  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH WITH HIGHER GUSTS SHIFTING  
TO THE WEST WITH GUSTS TO AROUND 35 MPH IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH INCREASING TO WEST AROUND  
20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1400-3300 FT AGL INCREASING TO 13700-15700 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (17600 KNOT-FT) INCREASING TO EXCELLENT  
(243900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE MID 80S. SOUTHWEST  
WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
MID 80S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 80S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE  
LOWER 80S.  
 

 
 
WYZ309-092230-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
155 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....83-91.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........5-11 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 15 MPH WITH GUSTS TO AROUND 35 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......4900-6900 FT AGL INCREASING TO 16200-18200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (83100 KNOT-FT) INCREASING TO EXCELLENT  
(221200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MIN TEMPERATURE.....50-56.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........60-66 PERCENT.  
24 HR TREND......43 PERCENT WETTER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................2 UNTIL 2100, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH SHIFTING TO THE EAST AFTER  
MIDNIGHT.  
MIXING HEIGHT.......2200-4200 FT AGL DECREASING TO 1200-2000 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (20300-21300 KNOT-FT).  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....78-84.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......18 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH WITH HIGHER GUSTS.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON.  
MIXING HEIGHT.......1800-3300 FT AGL INCREASING TO 10400-12400 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (20400 KNOT-FT) INCREASING TO EXCELLENT  
(159100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER  
80S.  
 

 
 
WYZ310-092230-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
155 AM MDT SUN AUG 9 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....89-94.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......1500-3500 FT AGL INCREASING TO 14900-16900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28400 KNOT-FT) INCREASING TO EXCELLENT  
(172100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2000.  
MIN TEMPERATURE.....53-58.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH.  
LAL.................2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1000-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (19400-25300 KNOT-FT).  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......11 DEGREES COOLER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......18 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................2 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......3000-4200 FT AGL INCREASING TO 4400-6400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (40000-54100 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTHWEST WINDS AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS AROUND 90.  
WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER  
80S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S.  
 

 
 
NEZ311-092230-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
155 AM MDT SUN AUG 9 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....88-94.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........14-20 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......800-1500 FT AGL INCREASING TO 10100-12100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14300 KNOT-FT) INCREASING TO VERY GOOD  
(127500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 2100.  
MIN TEMPERATURE.....54-59.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........74-80 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
LAL.................2 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1200-3200 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (24600-50200 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY SUNNY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
UNTIL 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........25-31 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......3500-4500 FT AGL INCREASING TO 5400-6800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (42200-50600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE MID 90S.  
SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 90S.  
SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER  
90S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
UPPER 80S.  
 

 
 
NEZ312-092230-  
BOX BUTTE/SOUTH SIOUX-  
155 AM MDT SUN AUG 9 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....91-96.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........13-19 PERCENT.  
24 HR TREND......14 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 14700-16200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (9300 KNOT-FT) INCREASING TO EXCELLENT  
(176500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2000SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS AFTER 2300.  
MIN TEMPERATURE.....54-59.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........77-83 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1100-2400 FT AGL.  
SMOKE DISPERSAL.....POOR (25300-38700 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY SUNNY.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
AFTER 1200.  
MAX TEMPERATURE.....80-85.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........33 PERCENT.  
24 HR TREND......16 PERCENT WETTER.  
20-FOOT WINDS.......EAST AROUND 10 MPH AND GUSTY.  
LAL.................2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......4000-5700 FT AGL.  
SMOKE DISPERSAL.....FAIR (44500-49000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 90S. SOUTH  
WINDS AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER  
90S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
UPPER 80S.  
 

 
 
NEZ313-092230-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
155 AM MDT SUN AUG 9 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....95-100.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......15 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......600-1300 FT AGL INCREASING TO 17000-18000 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (9900 KNOT-FT) INCREASING TO EXCELLENT  
(173200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS UNTIL 2100.  
MIN TEMPERATURE.....55-60.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........81-87 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH. GUSTS UP TO 25 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......800-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (18700-24700 KNOT-FT).  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY SUNNY UNTIL 1500, THEN  
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......15 DEGREES COOLER.  
MIN HUMIDITY........28-34 PERCENT.  
24 HR TREND......20 PERCENT WETTER.  
20-FOOT WINDS.......EAST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................2.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 20 MPH BECOMING SOUTHEAST AROUND 10  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......3400-5400 FT AGL.  
SMOKE DISPERSAL.....FAIR (40000-53300 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
TUESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE  
MID 90S. SOUTH WINDS AROUND 10 MPH.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. WINDS GENERALLY LESS THAN 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER  
90S.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
UPPER 80S.  
 

 
 
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