786  
FNUS55 KCYS 161057  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
357 AM MST SAT DEC 16 2017  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST SUNDAY FOR THE NORTH  
LARAMIE RANGE TO INCLUDE PORTIONS OF NORTHERN ALBANY COUNTY, AS WELL AS  
ALL OF CONVERSE COUNTY...  
   
DISCUSSION
 
WINDS WILL DIMINISH THIS MORNING WITH HUMIDITY VALUES  
TRENDING UPWARD DURING THE AFTERNOON HOURS AS A COLD FRONT MOVES  
SOUTHWARD ACROSS THE FIRE DISTRICTS. ENOUGH MOISTURE WILL BECOME  
FOCUSED ALONG THE FRONT TO PRODUCE AREAS OF SNOW SHOWERS, WITH THE  
POTENTIAL OF FREEZING DRIZZLE AND FOG ACROSS FAR SOUTHEASTERN  
WYOMING AND THE NEBRASKA PANHANDLE TONIGHT.  
 
WYZ301-162315-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
357 AM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST SUNDAY
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW LIKELY UNTIL 0800, THEN SNOW. SNOW  
ACCUMULATION UP TO 3 INCHES.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......18 DEGREES COOLER.  
MIN HUMIDITY........39-45 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......NORTH 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.55 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
MIXING HEIGHT.......1300-3300 FT AGL.  
SMOKE DISPERSAL.....POOR (19100-25100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS UNTIL 2400, THEN CHANCE OF  
SNOW. SNOW ACCUMULATION UP TO 2 INCHES.  
MIN TEMPERATURE.....20-25.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.45 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......2100-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (14300-27800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY SUNNY. SLIGHT CHANCE OF  
SNOW UNTIL 1100.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......18 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH. GUSTS UP TO 15 MPH  
INCREASING TO 25 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1900-3900 FT AGL.  
SMOKE DISPERSAL.....POOR TO GOOD (12600-60600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE  
LOWER 40S. WEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE LOWER  
40S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. WEST WINDS  
AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH CHANCE OF SNOW  
SHOWERS. LOWS AROUND 12. HIGHS IN THE LOWER 20S.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 6. HIGHS IN THE LOWER 20S.  
 

 
 
WYZ302-162315-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
357 AM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST SUNDAY
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW LIKELY UNTIL 0800, THEN SNOW. SNOW  
ACCUMULATION UP TO 3 INCHES.  
MAX TEMPERATURE.....30-35.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST AROUND 10 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.45 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......1100-3100 FT AGL.  
SMOKE DISPERSAL.....POOR (12900-17000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS WITH LIGHT FREEZING  
DRIZZLE LIKELY UNTIL 2400, THEN SNOW LIKELY AND  
CHANCE OF LIGHT FREEZING DRIZZLE. SNOW  
ACCUMULATION OF 1 TO 3 INCHES.  
MIN TEMPERATURE.....17-22.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......40 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.55 PERCENT.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
MIXING HEIGHT.......1700-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (9500-22200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY SUNNY. SLIGHT CHANCE OF  
SNOW UNTIL 1100.  
MAX TEMPERATURE.....25-33.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........64-70 PERCENT.  
24 HR TREND......32 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY INCREASING TO  
WEST AROUND 15 MPH WITH GUSTS TO AROUND 35 MPH  
IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 30 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1600-3200 FT AGL.  
SMOKE DISPERSAL.....POOR TO GOOD (17700-61100 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE  
LOWER 30S. WEST WINDS AROUND 20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE UPPER  
30S. WEST WINDS AROUND 15 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS  
AROUND 30. HIGHS IN THE LOWER 40S. WEST WINDS AROUND 15 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY.  
LOWS AROUND 8. HIGHS AROUND 17.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 1. HIGHS AROUND 16.  
 

 
 
WYZ303-162315-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
357 AM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST SUNDAY
 
 
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW UNTIL 0800, THEN SNOW  
LIKELY UNTIL 1700, THEN SNOW. SNOW ACCUMULATION  
UP TO 2 INCHES.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........36-42 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH SHIFTING TO THE SOUTH  
IN THE AFTERNOON.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (8300-15000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS UNTIL 2400. CHANCE OF SNOW  
AFTER 2400. SNOW ACCUMULATION UP TO 2 INCHES.  
MIN TEMPERATURE.....15-20.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......32 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1500-2400 FT AGL.  
SMOKE DISPERSAL.....POOR (19300-27600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........65-71 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY INCREASING TO  
SOUTHWEST AROUND 15 MPH WITH HIGHER GUSTS IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 30 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1200-3200 FT AGL.  
SMOKE DISPERSAL.....POOR (12300 KNOT-FT) INCREASING TO GOOD (66900  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 19. HIGHS IN THE LOWER 30S.  
SOUTHWEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE MID  
30S. SOUTHWEST WINDS AROUND 15 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN  
THE UPPER 20S. HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND  
15 MPH.    
THURSDAY
 
COLDER. MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY. LOWS  
AROUND 8. HIGHS AROUND 19.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 3 BELOW. HIGHS AROUND 14.  
 

 
 
WYZ304-162315-  
SOUTHWEST CARBON COUNTY-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW UNTIL 1700, THEN SNOW  
LIKELY. SNOW ACCUMULATION UP TO 1 INCH.  
MAX TEMPERATURE.....34-40.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE NORTHEAST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......500-1000 FT AGL INCREASING TO 2800-3800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (7500-23200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY UNTIL 2400. CHANCE  
OF SNOW AFTER 2400. SNOW ACCUMULATION UP TO 1  
INCH.  
MIN TEMPERATURE.....13-18.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......38 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH AROUND 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH.  
MIXING HEIGHT.......800-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (9500-11700 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....29-35.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......23 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO SOUTHWEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1400-1900 FT AGL INCREASING TO 3600-4200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (6700 KNOT-FT) INCREASING TO FAIR (58500  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 14. HIGHS IN THE MID 30S.  
SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS AROUND 40.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS  
AROUND 20. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 10 MPH.   
THURSDAY
 
COLDER. CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS  
AROUND 8. HIGHS IN THE LOWER 20S.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 3 BELOW. HIGHS IN THE LOWER  
20S.  
 

 
 
WYZ305-162315-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........31-37 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......500-1200 FT AGL INCREASING TO 2500-3700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11100-37500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL  
1900. SLIGHT CHANCE OF SNOW SHOWERS AFTER 1900  
UNTIL 2200, THEN SLIGHT CHANCE OF SNOW UNTIL  
0500.  
MIN TEMPERATURE.....13-18.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......46 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......600-1900 FT AGL.  
SMOKE DISPERSAL.....POOR (6400-7600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....25-31.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........63-69 PERCENT.  
24 HR TREND......32 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH. GUSTS UP TO 15 MPH  
INCREASING TO 25 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1000-3000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (7800-46000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE LOWER 30S.  
SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 20. HIGHS IN THE MID 30S.  
SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN  
THE MID 20S. HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND  
10 MPH.    
THURSDAY
 
COLDER. CLOUDY WITH SNOW SHOWERS LIKELY. LOWS AROUND  
13. HIGHS AROUND 20.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 1. HIGHS AROUND 18.  
 

 
 
WYZ306-162315-  
UPPER NORTH PLATTE RIVER BASIN-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 1700, THEN  
CHANCE OF SNOW.  
MAX TEMPERATURE.....34-39.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE NORTH IN THE  
AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......700-1200 FT AGL INCREASING TO 3100-3600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (8900-18800 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.  
SLIGHT CHANCE OF SNOW AFTER 2400.  
MIN TEMPERATURE.....15-20.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......29 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE  
NORTHWEST AFTER MIDNIGHT.  
MIXING HEIGHT.......900-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (5000-6200 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....27-32.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........60-66 PERCENT.  
24 HR TREND......25 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1600-3400 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (10300-52000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS IN THE LOWER 30S.  
SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE  
UPPER 30S. SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN  
THE MID 20S. HIGHS AROUND 40. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
COLDER. CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS  
AROUND 11. HIGHS AROUND 20.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 3 BELOW. HIGHS AROUND 16.  
 

 
 
WYZ307-162315-  
SNOWY RANGE/MEDICINE BOW NF-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 1700, THEN  
CHANCE OF SNOW.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........26-32 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (10100-24800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
2400, THEN SLIGHT CHANCE OF SNOW.  
MIN TEMPERATURE.....11-16.  
24 HR TREND......9 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......55 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 10 MPH SHIFTING TO THE SOUTH AFTER  
MIDNIGHT. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
MIXING HEIGHT.......700-1600 FT AGL.  
SMOKE DISPERSAL.....POOR (7000-9500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....23-29.  
24 HR TREND......8 DEGREES COOLER.  
MIN HUMIDITY........63-69 PERCENT.  
24 HR TREND......37 PERCENT WETTER.  
20-FOOT WINDS.......WEST 5 TO 10 MPH. GUSTS UP TO 20 MPH INCREASING  
TO 35 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH INCREASING TO AROUND 30 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1000-3000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (12000-59400 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 15. HIGHS IN THE UPPER 20S.  
WEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 20. HIGHS IN THE LOWER 30S.  
WEST WINDS AROUND 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. CHANCE OF SNOW SHOWERS. LOWS IN THE  
MID 20S. HIGHS IN THE MID 30S. SOUTHWEST WINDS AROUND 15 MPH.    
THURSDAY
 
COLDER. CLOUDY WITH SNOW SHOWERS LIKELY. LOWS AROUND  
7. HIGHS AROUND 17.    
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 3 BELOW. HIGHS AROUND 14.  
 

 
 
WYZ308-162315-  
LARAMIE VALLEY/SHIRLEY BASIN-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW UNTIL 1200, THEN SNOW.  
SNOW ACCUMULATION UP TO 1 INCH.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......600-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (6700-13800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS UNTIL 2400. CHANCE  
OF SNOW AFTER 2400. SNOW ACCUMULATION UP TO 1  
INCH.  
MIN TEMPERATURE.....16-21.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......45 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH BECOMING SOUTHEAST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......1800-2600 FT AGL.  
SMOKE DISPERSAL.....POOR (15000-28000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY SUNNY.  
MAX TEMPERATURE.....28-33.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......26 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 25 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1800-3800 FT AGL.  
SMOKE DISPERSAL.....POOR (14800 KNOT-FT) INCREASING TO GOOD (72700  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 19. HIGHS IN THE MID 30S.  
WEST WINDS AROUND 15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 20S. HIGHS IN THE  
UPPER 30S. WEST WINDS AROUND 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. CHANCE OF SNOW SHOWERS. LOWS IN THE  
UPPER 20S. HIGHS IN THE LOWER 40S. WEST WINDS AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY.  
LOWS AROUND 9. HIGHS AROUND 19.    
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 2 BELOW. HIGHS AROUND 16.  
 

 
 
WYZ309-162315-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 1700, THEN  
CHANCE OF SNOW.  
MAX TEMPERATURE.....35-41.  
24 HR TREND......11 DEGREES COOLER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON.  
MIXING HEIGHT.......600-1500 FT AGL INCREASING TO 2100-3600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (12500-20600 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.  
CHANCE OF LIGHT FREEZING DRIZZLE. CHANCE OF  
SNOW AFTER 2400. AREAS OF FREEZING FOG AFTER  
2300.  
MIN TEMPERATURE.....19-25.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......53 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
MIXING HEIGHT.......1600-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (12600-23800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY SUNNY. AREAS OF  
FREEZING FOG UNTIL 0800. SLIGHT CHANCE OF LIGHT  
FREEZING DRIZZLE UNTIL 0800. SLIGHT CHANCE OF  
SNOW UNTIL 1100.  
MAX TEMPERATURE.....31-37.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......30 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH INCREASING TO WEST AROUND 15  
MPH IN THE AFTERNOON. GUSTS UP TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST  
AROUND 25 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2200-4200 FT AGL.  
SMOKE DISPERSAL.....POOR (20100 KNOT-FT) INCREASING TO GOOD (76300  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 20S. HIGHS AROUND 40.  
WEST WINDS AROUND 20 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE MID  
40S. WEST WINDS AROUND 20 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE  
UPPER 40S. WEST WINDS AROUND 15 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH CHANCE OF SNOW  
SHOWERS. LOWS AROUND 12. HIGHS IN THE LOWER 20S.    
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 5. HIGHS AROUND 20.  
 

 
 
WYZ310-162315-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW. SLIGHT CHANCE OF  
RAIN AFTER 1200.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......17 DEGREES COOLER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......NORTH AROUND 10 MPH SHIFTING TO THE NORTHEAST  
IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
MIXING HEIGHT.......1100-1800 FT AGL INCREASING TO 2700-4000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (20700-33800 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY UNTIL 2400. CHANCE  
OF LIGHT FREEZING DRIZZLE. CHANCE OF SNOW AFTER  
2400. PATCHY FREEZING FOG AFTER 2300. SNOW  
ACCUMULATION UP TO 1 INCH.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......49 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH BECOMING NORTHEAST AROUND 5  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......2200-3000 FT AGL.  
SMOKE DISPERSAL.....POOR (17400-27900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........CLOUDY UNTIL 0900, THEN PARTLY CLOUDY UNTIL  
1500, THEN MOSTLY SUNNY. PATCHY FREEZING FOG  
UNTIL 0800. SLIGHT CHANCE OF LIGHT FREEZING  
DRIZZLE UNTIL 0800. SLIGHT CHANCE OF SNOW UNTIL  
1100.  
MAX TEMPERATURE.....36-41.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........45-51 PERCENT.  
24 HR TREND......28 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......2600-4500 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (13900-55900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE MID  
40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE  
UPPER 40S. WEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS AROUND  
30. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH CHANCE OF SNOW  
SHOWERS AND SHOWERS. LOWS AROUND 13. HIGHS IN THE MID 20S.    
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 7. HIGHS IN THE MID 20S.  
 

 
 
NEZ311-162315-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 1100, THEN  
CHANCE OF SNOW. CHANCE OF RAIN AFTER 1200 UNTIL  
1500.  
MAX TEMPERATURE.....35-40.  
24 HR TREND......16 DEGREES COOLER.  
MIN HUMIDITY........40-46 PERCENT.  
24 HR TREND......22 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1000-3000 FT AGL.  
SMOKE DISPERSAL.....POOR (12400-37800 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  
CHANCE OF SNOW.  
MIN TEMPERATURE.....22-27.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......37 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......2100-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (26800-35000 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY  
UNTIL 1500, THEN MOSTLY SUNNY. SLIGHT CHANCE OF  
SNOW UNTIL 1100.  
MAX TEMPERATURE.....36-41.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO AROUND 15  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1800-2300 FT AGL INCREASING TO 3800-4700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (5000-54200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE MID  
40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE MID  
40S. WEST WINDS AROUND 5 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN THE  
MID 20S. HIGHS AROUND 50. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY  
AND CHANCE OF SHOWERS. LOWS AROUND 13. HIGHS IN THE MID 20S.    
FRIDAY
 
PARTLY CLOUDY. LOWS AROUND 8. HIGHS IN THE MID 20S.  
 

 
 
NEZ312-162315-  
BOX BUTTE/SOUTH SIOUX-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 0800  
UNTIL 1700. SLIGHT CHANCE OF RAIN AFTER 1400  
UNTIL 1500. CHANCE OF SNOW AFTER 1700.  
MAX TEMPERATURE.....37-42.  
24 HR TREND......18 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......15 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......800-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (14500-35300 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.  
CHANCE OF LIGHT FREEZING DRIZZLE. CHANCE OF  
SNOW AFTER 2400. PATCHY FREEZING FOG AFTER  
2300.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......32 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL.  
SMOKE DISPERSAL.....POOR (26900-33300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
PATCHY FREEZING FOG UNTIL 0800. SLIGHT CHANCE  
OF LIGHT FREEZING DRIZZLE UNTIL 0800. SLIGHT  
CHANCE OF SNOW UNTIL 1100.  
MAX TEMPERATURE.....36-41.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......19 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO SOUTHWEST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2200-4200 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (6300-50300 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE  
UPPER 40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE UPPER  
40S. WEST WINDS AROUND 5 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN THE  
MID 20S. HIGHS IN THE LOWER 50S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. CLOUDY WITH CHANCE OF SNOW SHOWERS AND  
SHOWERS. LOWS AROUND 14. HIGHS IN THE UPPER 20S.    
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 8. HIGHS IN THE MID 20S.  
 

 
 
NEZ313-162315-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
357 AM MST SAT DEC 16 2017  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY CLOUDY.  
CHANCE OF SNOW AFTER 1700.  
MAX TEMPERATURE.....40-45.  
24 HR TREND......17 DEGREES COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......NORTH AROUND 10 MPH WITH HIGHER GUSTS.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH.  
MIXING HEIGHT.......700-2600 FT AGL.  
SMOKE DISPERSAL.....POOR (12600-36700 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF LIGHT FREEZING DRIZZLE AND  
SNOW. PATCHY FREEZING FOG AFTER 2300.  
MIN TEMPERATURE.....23-28.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......32 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-2600 FT AGL.  
SMOKE DISPERSAL.....POOR (25600-30900 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1200, THEN PARTLY CLOUDY.  
PATCHY FREEZING FOG UNTIL 0800. SLIGHT CHANCE  
OF LIGHT FREEZING DRIZZLE UNTIL 0800. SLIGHT  
CHANCE OF SNOW UNTIL 1100.  
MAX TEMPERATURE.....37-42.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........47-53 PERCENT.  
24 HR TREND......20 PERCENT WETTER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH.  
MIXING HEIGHT.......2300-4300 FT AGL.  
SMOKE DISPERSAL.....POOR (11500-38500 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE  
UPPER 40S. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE UPPER  
40S. WEST WINDS AROUND 5 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE  
LOWER 50S. SOUTHWEST WINDS AROUND 10 MPH.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY  
AND SLIGHT CHANCE OF SHOWERS. LOWS AROUND 16. HIGHS IN THE UPPER  
20S.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 10. HIGHS IN THE MID 20S.  
 

 
 
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