411  
FNUS55 KCYS 281109  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
509 AM MDT FRI APR 28 2017  
 
WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING  
WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT  
WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT  
WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS  
EVENING  
   
DISCUSSION
 
 
A POTENT SPRING STORM SYSTEM MOVING OVER THE ROCKIES TODAY AND  
TONIGHT WILL BRING WIDESPREAD RAIN AND SNOW TO THE AREA. MODERATE  
TO HEAVY SNOW ACCUMULATIONS ARE EXPECTED IN THE MOUNTAINS OF  
SOUTHEAST WYOMING, AND ALSO ALONG THE PINE RIDGE. TEMPERATURES  
WILL REMAIN WELL BELOW NORMAL FOR THIS TIME OF YEAR. MUCH DRIER  
CONDITIONS ARE EXPECTED THROUGH THE WEEKEND, BUT TEMPERATURES WILL  
REMAIN COOL.  
 
WYZ301-282215-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
509 AM MDT FRI APR 28 2017  
   
..WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. SHOWERS LIKELY AFTER  
1500. PATCHY BLOWING SNOW AFTER 0800 UNTIL  
1500. SNOW ACCUMULATION OF 2 TO 6 INCHES.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......14 DEGREES COOLER.  
MIN HUMIDITY........79-85 PERCENT.  
24 HR TREND......20 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.60 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1600-3400 FT AGL.  
SMOKE DISPERSAL.....POOR (32700-35300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 2100. CHANCE OF  
SNOW SHOWERS.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 5 MPH. GUSTS UP TO 20 MPH IN THE  
EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......300-2300 FT AGL.  
SMOKE DISPERSAL.....POOR (6400-14300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY.  
MAX TEMPERATURE.....37-43.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......28 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......1700-3700 FT AGL.  
SMOKE DISPERSAL.....POOR (14700-21300 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 20S. HIGHS IN THE MID  
40S. WEST WINDS AROUND 5 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S. NORTHWEST  
WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S. NORTHWEST WINDS  
AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 30S. HIGHS IN THE LOWER 50S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE  
LOWER 60S.  
 

 
 
WYZ302-282215-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
509 AM MDT FRI APR 28 2017  
   
..WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. PATCHY BLOWING SNOW AFTER  
1400. SNOW ACCUMULATION OF 4 TO 7 INCHES.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........84-90 PERCENT.  
24 HR TREND......26 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH. GUSTS UP TO 20 MPH  
INCREASING TO 30 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.65 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (25200-35800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2000. SNOW  
SHOWERS LIKELY UNTIL 2400, THEN CHANCE OF SNOW  
SHOWERS. SNOW ACCUMULATION OF 1 TO 3 INCHES.  
MIN TEMPERATURE.....19-24.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1500-3300 FT AGL.  
SMOKE DISPERSAL.....POOR (27300-31900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........CLOUDY UNTIL 1200, THEN PARTLY CLOUDY. CHANCE  
OF SNOW SHOWERS UNTIL 1200, THEN SLIGHT CHANCE  
OF SNOW SHOWERS.  
MAX TEMPERATURE.....29-35.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........57-63 PERCENT.  
24 HR TREND......27 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......2900-4300 FT AGL.  
SMOKE DISPERSAL.....POOR (35600-36500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 18. HIGHS IN THE UPPER 30S.  
NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN  
THE LOWER 40S. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN  
THE LOWER 40S. NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SLIGHT  
CHANCE OF SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE MID  
50S.  
 

 
 
WYZ303-282215-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
509 AM MDT FRI APR 28 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. PATCHY BLOWING SNOW AFTER  
1300. SNOW ACCUMULATION OF 2 TO 3 INCHES.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........78-84 PERCENT.  
24 HR TREND......28 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 15 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON. GUSTS UP TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.60 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1200-3200 FT AGL.  
SMOKE DISPERSAL.....POOR (25400-25900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2400. CHANCE  
OF SNOW SHOWERS.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1500-3500 FT AGL.  
SMOKE DISPERSAL.....POOR (33800-37100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
SLIGHT CHANCE OF SHOWERS AFTER 1600.  
MAX TEMPERATURE.....34-39.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......27 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......3900-5700 FT AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD (56800-64700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 19. HIGHS IN THE LOWER 40S.  
NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. WEST WINDS AROUND  
10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 30. HIGHS IN THE MID  
40S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SLIGHT  
CHANCE OF SHOWERS. LOWS IN THE UPPER 20S. HIGHS AROUND 50.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE  
UPPER 50S.  
 

 
 
WYZ304-282215-  
SOUTHWEST CARBON COUNTY-  
509 AM MDT FRI APR 28 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 1000. SNOW  
SHOWERS LIKELY UNTIL 1200, THEN SNOW SHOWERS.  
SHOWERS LIKELY AFTER 1300. SNOW ACCUMULATION OF  
1 TO 3 INCHES.  
MAX TEMPERATURE.....35-40.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........63-69 PERCENT.  
24 HR TREND......20 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 10 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON. GUSTS UP TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.50 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......2800-4700 FT AGL.  
SMOKE DISPERSAL.....FAIR (48200-51000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 2000. CHANCE OF  
SNOW SHOWERS UNTIL 2400. PATCHY BLOWING SNOW  
AFTER 1900.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........85-91 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1300-3000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (28200-42600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
PATCHY BLOWING SNOW UNTIL 1200. SLIGHT CHANCE  
OF SNOW SHOWERS UNTIL 1200.  
MAX TEMPERATURE.....39-44.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......21 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......4000-6000 FT AGL.  
SMOKE DISPERSAL.....GOOD (66200-99800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 20. HIGHS IN THE UPPER 40S.  
NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. WEST  
WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN  
THE LOWER 50S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS AROUND  
30. HIGHS IN THE MID 50S.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS AROUND 60.  
 

 
 
WYZ305-282215-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
509 AM MDT FRI APR 28 2017  
   
..WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY. SNOW ACCUMULATION  
OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....28-34.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........69-75 PERCENT.  
24 HR TREND......11 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.45 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......2800-4600 FT AGL.  
SMOKE DISPERSAL.....FAIR (42500-47100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1900. CHANCE OF  
SNOW SHOWERS. PATCHY BLOWING SNOW AFTER 2200.  
MIN TEMPERATURE.....17-22.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........82-88 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1600-3200 FT AGL.  
SMOKE DISPERSAL.....POOR (29200-39800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
SLIGHT CHANCE OF SHOWERS AFTER 1400.  
MAX TEMPERATURE.....31-37.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......3200-5100 FT AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD (52700-72000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT  
CHANCE OF SHOWERS. LOWS AROUND 15. HIGHS IN THE UPPER 30S.  
NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN THE  
LOWER 40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN THE  
LOWER 40S. WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS IN THE MID 20S. HIGHS IN THE MID 40S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE  
LOWER 50S.  
 

 
 
WYZ306-282215-  
UPPER NORTH PLATTE RIVER BASIN-  
509 AM MDT FRI APR 28 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY. SNOW ACCUMULATION  
OF 1 TO 2 INCHES.  
MAX TEMPERATURE.....31-36.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........67-73 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
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.50 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......1300-3300 FT AGL.  
SMOKE DISPERSAL.....POOR (22700-27900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 1900. CHANCE OF  
SNOW SHOWERS UNTIL 2400, THEN SLIGHT CHANCE OF  
SNOW SHOWERS.  
MIN TEMPERATURE.....19-24.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........85-91 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH. GUSTS UP TO 25 MPH IN  
THE EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2000 FT AGL.  
SMOKE DISPERSAL.....POOR (14100-17000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
SLIGHT CHANCE OF SHOWERS AFTER 1300.  
MAX TEMPERATURE.....36-41.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........43-49 PERCENT.  
24 HR TREND......19 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......3600-5600 FT AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD (40000-65100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS AROUND 17. HIGHS IN THE LOWER 40S.  
NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN  
THE UPPER 40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN  
THE MID 40S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE MID 50S.  
 

 
 
WYZ307-282215-  
SNOWY RANGE/MEDICINE BOW NF-  
509 AM MDT FRI APR 28 2017  
   
..WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 0800. SNOW  
SHOWERS. SNOW ACCUMULATION OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....24-30.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........71-77 PERCENT.  
24 HR TREND......13 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 10 MPH WITH HIGHER GUSTS SHIFTING  
TO THE NORTH AND GUSTY IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.50 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......1000-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (23200-28500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY UNTIL 2400, THEN  
CHANCE OF SNOW SHOWERS. SNOW ACCUMULATION OF 1  
TO 3 INCHES.  
MIN TEMPERATURE.....16-21.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 15 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 20 MPH.  
MIXING HEIGHT.......1500-3000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (32700-41300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....28-34.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........55-61 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......3300-4700 FT AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD (58300-61400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS AROUND 13. HIGHS IN THE MID 30S. NORTHWEST WINDS  
AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS  
AROUND 40. WEST WINDS AROUND 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN THE  
UPPER 30S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SHOWERS.  
LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE  
UPPER 40S.  
 

 
 
WYZ308-282215-  
LARAMIE VALLEY/SHIRLEY BASIN-  
509 AM MDT FRI APR 28 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. PATCHY BLOWING SNOW AFTER  
1500. SNOW ACCUMULATION OF 1 TO 4 INCHES.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........72-78 PERCENT.  
24 HR TREND......42 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE NORTHEAST WITH HIGHER GUSTS IN THE  
AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.55 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1700-3000 FT AGL.  
SMOKE DISPERSAL.....POOR (25400-35400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2000. SNOW  
SHOWERS LIKELY UNTIL 2400, THEN CHANCE OF SNOW  
SHOWERS. SNOW ACCUMULATION OF 1 TO 2 INCHES.  
MIN TEMPERATURE.....18-23.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH. GUSTS UP TO 30 MPH IN  
THE EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......2400-3900 FT AGL.  
SMOKE DISPERSAL.....POOR (37400-39400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....31-36.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......34 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......3900-5000 FT AGL.  
SMOKE DISPERSAL.....FAIR (49000-51900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 17. HIGHS AROUND 40. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS, SLIGHT CHANCE OF  
THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN  
THE MID 40S. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN  
THE MID 40S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S.    
THURSDAY
 
MOSTLY CLEAR. LOWS AROUND 30. HIGHS IN THE MID 50S.  
 

 
 
WYZ309-282215-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
509 AM MDT FRI APR 28 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW UNTIL 0800.  
PATCHY BLOWING SNOW AFTER 1500. SNOW SHOWERS.  
SNOW ACCUMULATION OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....30-35.  
24 HR TREND......13 DEGREES COOLER.  
MIN HUMIDITY........75-81 PERCENT.  
24 HR TREND......47 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON. GUSTS UP TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.50 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1900-3200 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (28400-40100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2000. SNOW  
SHOWERS LIKELY. SNOW ACCUMULATION OF 2 TO 3  
INCHES.  
MIN TEMPERATURE.....19-25.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.40 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......2200-3700 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (36900-42300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. SLIGHT  
CHANCE OF SHOWERS AFTER 1400.  
MAX TEMPERATURE.....28-36.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........56-62 PERCENT.  
24 HR TREND......22 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......3400-4500 FT AGL.  
SMOKE DISPERSAL.....FAIR (47300-50300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 20. HIGHS AROUND 40. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS, SLIGHT CHANCE OF  
THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN  
THE MID 40S. NORTHWEST WINDS AROUND 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN  
THE MID 40S. NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.  
LOWS AROUND 30. HIGHS IN THE UPPER 40S.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE  
UPPER 50S.  
 

 
 
WYZ310-282215-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
509 AM MDT FRI APR 28 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. SHOWERS AFTER 0800 UNTIL  
1200. PATCHY BLOWING SNOW AFTER 1200. SNOW  
ACCUMULATION OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......12 DEGREES COOLER.  
MIN HUMIDITY........82-88 PERCENT.  
24 HR TREND......29 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.55 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......2000-3300 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (31300-42600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2000. SNOW  
SHOWERS LIKELY UNTIL 2400, THEN CHANCE OF SNOW  
SHOWERS. SNOW ACCUMULATION OF 1 TO 2 INCHES.  
MIN TEMPERATURE.....24-29.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH. GUSTS UP TO 30 MPH IN  
THE EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-3100 FT AGL.  
SMOKE DISPERSAL.....POOR (25300-33000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
1200. SLIGHT CHANCE OF SHOWERS AFTER 1000.  
SLIGHT CHANCE OF SNOW SHOWERS AFTER 1200.  
MAX TEMPERATURE.....36-42.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......31 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH.  
MIXING HEIGHT.......2900-4900 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (39500-48000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE MID  
40S. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN  
THE LOWER 30S. HIGHS AROUND 50. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS, SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS  
AROUND 50. NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 30S. HIGHS IN THE LOWER 50S.    
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER  
60S.  
 

 
 
NEZ311-282215-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
509 AM MDT FRI APR 28 2017  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS  
EVENING...  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS UNTIL 1200. SNOW SHOWERS  
LIKELY AFTER 1200. SHOWERS LIKELY AFTER 1300.  
PATCHY BLOWING SNOW AFTER 0900 UNTIL 1600. SNOW  
ACCUMULATION OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......16 DEGREES COOLER.  
MIN HUMIDITY........81-87 PERCENT.  
24 HR TREND......29 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.55 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1100-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (31100-34800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS UNTIL 2200. CHANCE OF  
SNOW SHOWERS UNTIL 2400, THEN SLIGHT CHANCE OF  
SNOW SHOWERS.  
MIN TEMPERATURE.....25-30.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH. GUSTS UP TO 25 MPH IN THE  
EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......200-1900 FT AGL.  
SMOKE DISPERSAL.....POOR (6300-12500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY.  
MAX TEMPERATURE.....40-46.  
24 HR TREND......13 DEGREES WARMER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......32 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
MIXING HEIGHT.......2000-4000 FT AGL.  
SMOKE DISPERSAL.....POOR (21100-37300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE UPPER  
40S. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 30S. HIGHS IN THE LOWER 50S. NORTHWEST WINDS AROUND 15 MPH.   
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE MID 30S.  
HIGHS IN THE LOWER 50S. NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 30S. HIGHS IN THE MID 50S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE  
LOWER 60S.  
 

 
 
NEZ312-282215-  
BOX BUTTE/SOUTH SIOUX-  
509 AM MDT FRI APR 28 2017  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS  
EVENING...  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS UNTIL 1200, THEN SNOW  
SHOWERS LIKELY. PATCHY BLOWING SNOW AFTER 1200.  
SNOW ACCUMULATION OF 2 TO 4 INCHES.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......16 DEGREES COOLER.  
MIN HUMIDITY........83-89 PERCENT.  
24 HR TREND......31 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.60 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1800-3100 FT AGL.  
SMOKE DISPERSAL.....FAIR (41000-41800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS UNTIL 2400, THEN  
SLIGHT CHANCE OF SNOW SHOWERS.  
MIN TEMPERATURE.....AROUND 27.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH. GUSTS UP TO 25 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1000-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (18900-26200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY.  
MAX TEMPERATURE.....39-44.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........49-55 PERCENT.  
24 HR TREND......32 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH.  
MIXING HEIGHT.......2000-4000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (31600-41400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE UPPER  
40S. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS  
AROUND 30. HIGHS IN THE LOWER 50S. NORTHWEST WINDS AROUND 15 MPH.   
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE LOWER  
30S. HIGHS IN THE LOWER 50S. NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 30S. HIGHS IN THE MID 50S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE  
LOWER 60S.  
 

 
 
NEZ313-282215-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
509 AM MDT FRI APR 28 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS AND SHOWERS. PATCHY  
BLOWING SNOW AFTER 1700. SNOW ACCUMULATION OF 1  
TO 3 INCHES.  
MAX TEMPERATURE.....34-39.  
24 HR TREND......14 DEGREES COOLER.  
MIN HUMIDITY........85-91 PERCENT.  
24 HR TREND......26 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.50 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......2300-3100 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (33300-45100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. PATCHY BLOWING SNOW UNTIL 2000. CHANCE  
OF SHOWERS UNTIL 1900. CHANCE OF SNOW SHOWERS.  
MIN TEMPERATURE.....25-30.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 10 TO 15 MPH. GUSTS UP TO 25 MPH IN  
THE EVENING.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1800-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (26200-34000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS UNTIL 1200.  
SLIGHT CHANCE OF SHOWERS AFTER 1000. SLIGHT  
CHANCE OF SNOW SHOWERS AFTER 1200 UNTIL 1600.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......30 PERCENT DRIER.  
20-FOOT WINDS.......NORTH 10 TO 15 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH.  
MIXING HEIGHT.......2900-4000 FT AGL.  
SMOKE DISPERSAL.....FAIR (42200-55400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN  
THE MID 20S. HIGHS IN THE UPPER 40S. NORTH WINDS AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE MID  
50S. NORTHWEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 50S.  
NORTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 30S. HIGHS IN THE MID 50S.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE  
LOWER 60S.  
 

 
 
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