196  
FNUS55 KCYS 231006  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
306 AM MST FRI FEB 23 2018  
   
DISCUSSION
 
TODAY WILL BE CONTINUED COLD ALONG WITH A CHANCE OF SNOW  
FOR MOST LOCATIONS. SATURDAY WILL BE WINDY AND SLIGHTLY WARMER WITH  
DRY CONDITIONS. ASIDE FROM A CHANCE OF SNOW FOR THE MOUNTAINS ON SUNDAY,  
THIS DAY WILL BE WINDY AND A BIT WARMER. THE MORE MILD WEATHER WILL  
CONTINUE ON MONDAY BEFORE A COOLING TREND IS NOTED FOR TUESDAY AND  
WEDNESDAY.  
 
WYZ301-232315-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND LIGHT  
FREEZING RAIN. PATCHY FOG AFTER 1500.  
MAX TEMPERATURE.....20-25.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........66-72 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO AROUND 15  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......300-800 FT AGL INCREASING TO 2200-3200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (1400-32300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 1900. CHANCE OF SNOW SHOWERS  
AND LIGHT FREEZING RAIN UNTIL 2400. SLIGHT  
CHANCE OF SNOW SHOWERS AFTER 2400.  
MIN TEMPERATURE.....4-9.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........93-99 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......400-1600 FT AGL.  
SMOKE DISPERSAL.....POOR (4700-15500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY SUNNY  
UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......10 DEGREES WARMER.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......26 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH  
IN THE AFTERNOON. GUSTS UP TO 40 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......400-900 FT AGL INCREASING TO 5300-6300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (9400 KNOT-FT) INCREASING TO VERY GOOD  
(132400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS AROUND 10. HIGHS IN THE LOWER 30S.  
WEST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 18. HIGHS IN THE MID 30S.  
WEST WINDS AROUND 20 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 13. HIGHS IN THE LOWER 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS IN THE LOWER  
30S.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 13. HIGHS IN THE MID 30S.  
 

 
 
WYZ302-232315-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
UNTIL 1100, THEN CHANCE OF SNOW SHOWERS AND  
SLIGHT CHANCE OF LIGHT FREEZING RAIN. PATCHY  
FOG AFTER 1500.  
MAX TEMPERATURE.....21-26.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........65-71 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......500-1100 FT AGL INCREASING TO 2900-4900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5700-39200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0200. SLIGHT CHANCE OF LIGHT  
FREEZING RAIN UNTIL 2300. CHANCE OF SNOW  
SHOWERS UNTIL 0500.  
MIN TEMPERATURE.....3-8.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST AND GUSTY AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT.  
MIXING HEIGHT.......600-1600 FT AGL.  
SMOKE DISPERSAL.....POOR (11800-14500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....16-24.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......BREEZY. WEST 20 TO 25 MPH WITH GUSTS TO AROUND  
50 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 30 MPH INCREASING TO AROUND 40 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 3500-5300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (21000 KNOT-FT) INCREASING TO EXCELLENT  
(150700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 9. HIGHS IN THE MID  
20S. WEST WINDS AROUND 25 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 15. HIGHS IN THE  
LOWER 30S. WEST WINDS AROUND 25 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 14. HIGHS AROUND 30. SOUTHWEST WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 13. HIGHS IN THE UPPER  
20S.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 14. HIGHS IN THE LOWER 30S.  
 

 
 
WYZ303-232315-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 0700. PATCHY  
FOG AFTER 0800. CHANCE OF SNOW SHOWERS. SLIGHT  
CHANCE OF LIGHT FREEZING RAIN AFTER 1300.  
MAX TEMPERATURE.....22-27.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH SHIFTING TO THE NORTH IN  
THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......400-1900 FT AGL INCREASING TO 4800-6800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (10700-45500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 2200. PATCHY FOG AFTER 2300  
UNTIL 0100. SLIGHT CHANCE OF LIGHT FREEZING  
RAIN UNTIL 1900. CHANCE OF SNOW SHOWERS UNTIL  
2300. SLIGHT CHANCE OF SNOW SHOWERS AFTER 2300  
UNTIL 0500.  
MIN TEMPERATURE.....ZERO TO 5 ABOVE ZERO.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST AROUND 5 MPH SHIFTING TO THE WEST  
AFTER MIDNIGHT. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......800-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (10400-15800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1700.  
MAX TEMPERATURE.....16-22.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
20-FOOT WINDS.......BREEZY. WEST 20 TO 25 MPH WITH GUSTS TO AROUND  
50 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 30 TO 35 MPH.  
MIXING HEIGHT.......900-1400 FT AGL INCREASING TO 4200-5200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28000 KNOT-FT) INCREASING TO VERY GOOD  
(149500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS  
AROUND 7. HIGHS IN THE LOWER 20S. SOUTHWEST WINDS AROUND 25 MPH.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 14. HIGHS AROUND 30. SOUTHWEST WINDS AROUND 20 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 13. HIGHS IN THE LOWER 30S. SOUTHWEST WINDS AROUND 10 MPH.   
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 10. HIGHS IN THE UPPER  
20S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS AROUND 30.  
 

 
 
WYZ304-232315-  
SOUTHWEST CARBON COUNTY-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS. SLIGHT CHANCE  
OF LIGHT FREEZING RAIN AFTER 1100. PATCHY FOG  
AFTER 0800.  
MAX TEMPERATURE.....24-30.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT.  
TRANSPORT WINDS.....SOUTH 15 TO 20 MPH.  
MIXING HEIGHT.......2300-3700 FT AGL INCREASING TO 4800-6800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR TO GOOD (47300-86900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 2300. CHANCE OF SNOW SHOWERS  
UNTIL 2300, THEN SLIGHT CHANCE OF SNOW SHOWERS  
UNTIL 0500.  
MIN TEMPERATURE.....2 BELOW TO 3 ABOVE ZERO.  
24 HR TREND......12 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......WEST AROUND 10 MPH. GUSTS UP TO 25 MPH AFTER  
MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......800-2800 FT AGL.  
SMOKE DISPERSAL.....POOR (8600-21600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS AFTER 1100 UNTIL  
1700, THEN CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....20-25.  
24 HR TREND......5 DEGREES COOLER.  
MIN HUMIDITY........48-54 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 15 TO 20 MPH WITH GUSTS TO AROUND 45  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH INCREASING TO AROUND 30 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......700-1200 FT AGL INCREASING TO 5100-6200 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (15700 KNOT-FT) INCREASING TO VERY GOOD  
(148400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS AROUND  
4. HIGHS IN THE MID 20S. SOUTHWEST WINDS AROUND 20 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 10. HIGHS IN THE LOWER 30S. SOUTHWEST WINDS AROUND 15 MPH.   
TUESDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 14. HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 10. HIGHS IN THE LOWER 30S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 10. HIGHS IN THE LOWER  
30S.  
 

 
 
WYZ305-232315-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS LIKELY UNTIL 1700. SLIGHT  
CHANCE OF LIGHT FREEZING RAIN AFTER 1100.  
CHANCE OF SNOW SHOWERS AFTER 1700. PATCHY FOG  
AFTER 0800. SNOW ACCUMULATION OF 1 TO 4 INCHES.  
MAX TEMPERATURE.....20-26.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.45 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.  
MIXING HEIGHT.......1900-2700 FT AGL INCREASING TO 6100-8000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (41700 KNOT-FT) INCREASING TO VERY GOOD  
(103900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 0500. CHANCE OF  
SNOW SHOWERS UNTIL 0500, THEN SLIGHT CHANCE OF  
SNOW SHOWERS.  
MIN TEMPERATURE.....ZERO TO 5 ABOVE ZERO.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........91-97 PERCENT.  
24 HR TREND......9 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHWEST AROUND 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......900-2900 FT AGL.  
SMOKE DISPERSAL.....POOR (26100-30300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1100, THEN  
CHANCE OF SNOW SHOWERS UNTIL 1700, THEN SNOW  
SHOWERS LIKELY. SNOW ACCUMULATION UP TO 1 INCH.  
MAX TEMPERATURE.....13-19.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........52-58 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 15 TO 20 MPH WITH GUSTS TO AROUND 45  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 30 TO 35 MPH.  
MIXING HEIGHT.......1400-2100 FT AGL INCREASING TO 3900-5600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (41800 KNOT-FT) INCREASING TO EXCELLENT  
(153200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY. LOWS AROUND 6.  
HIGHS AROUND 19. WEST WINDS AROUND 20 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 9. HIGHS IN THE UPPER 20S. SOUTHWEST WINDS AROUND 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 15. HIGHS IN THE LOWER 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 13. HIGHS IN THE UPPER 20S.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 12. HIGHS AROUND 30.  
 

 
 
WYZ306-232315-  
UPPER NORTH PLATTE RIVER BASIN-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS. PATCHY FOG  
AFTER 1500.  
MAX TEMPERATURE.....24-29.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........53-59 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE NORTHWEST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......1400-2200 FT AGL INCREASING TO 6200-7900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (20900-62600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 2200. PATCHY FOG AFTER 0200  
UNTIL 0300. CHANCE OF SNOW SHOWERS UNTIL 0500.  
SLIGHT CHANCE OF SNOW SHOWERS AFTER 0500.  
MIN TEMPERATURE.....1-6.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1600-3600 FT AGL.  
SMOKE DISPERSAL.....POOR (25200-29900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1700, THEN  
CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....16-21.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......BREEZY. SOUTHWEST 20 TO 25 MPH WITH GUSTS TO  
AROUND 45 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 25 MPH INCREASING TO AROUND 35 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......1100-1700 FT AGL INCREASING TO 4900-5500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (27900 KNOT-FT) INCREASING TO EXCELLENT  
(167300 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS AROUND  
7. HIGHS IN THE LOWER 20S. WEST WINDS AROUND 20 MPH.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 11. HIGHS AROUND 30. SOUTHWEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 15. HIGHS IN THE LOWER 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. LOWS AROUND 13. HIGHS AROUND 30.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS IN THE LOWER  
30S.  
 

 
 
WYZ307-232315-  
SNOWY RANGE/MEDICINE BOW NF-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. SLIGHT  
CHANCE OF LIGHT FREEZING RAIN AFTER 1500 UNTIL  
1600. PATCHY FOG AFTER 1300.  
MAX TEMPERATURE.....19-25.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........53-59 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......1200-1800 FT AGL INCREASING TO 7900-9900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (21700 KNOT-FT) INCREASING TO VERY GOOD  
(113400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 2300. PATCHY FOG AFTER 0100.  
CHANCE OF SNOW SHOWERS UNTIL 0500. SLIGHT  
CHANCE OF SNOW SHOWERS AFTER 0500.  
MIN TEMPERATURE.....2 BELOW TO 3 ABOVE ZERO.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH INCREASING TO WEST  
AROUND 15 MPH WITH GUSTS TO AROUND 35 MPH AFTER  
MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......1500-3500 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (39100-43200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1700, THEN  
CHANCE OF SNOW SHOWERS.  
MAX TEMPERATURE.....10-16.  
24 HR TREND......9 DEGREES COOLER.  
MIN HUMIDITY........51-57 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......WINDY. WEST AROUND 20 MPH INCREASING TO AROUND  
30 MPH IN THE AFTERNOON. GUSTS UP TO 55 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 40 TO 45 MPH.  
MIXING HEIGHT.......1300-1800 FT AGL INCREASING TO 3100-4800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (45600 KNOT-FT) INCREASING TO EXCELLENT  
(162400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS  
AROUND 3. HIGHS AROUND 16. WEST WINDS AROUND 25 MPH.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 8. HIGHS IN THE MID 20S. SOUTHWEST WINDS AROUND 20 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 12. HIGHS IN THE UPPER 20S. SOUTHWEST WINDS AROUND 10 MPH.   
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 11. HIGHS IN THE MID 20S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 11. HIGHS IN THE UPPER  
20S.  
 

 
 
WYZ308-232315-  
LARAMIE VALLEY/SHIRLEY BASIN-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG UNTIL 0700. PATCHY  
FOG AFTER 1400. SLIGHT CHANCE OF SNOW SHOWERS  
UNTIL 1100, THEN CHANCE OF SNOW SHOWERS. SLIGHT  
CHANCE OF LIGHT FREEZING RAIN AFTER 1400 UNTIL  
1500.  
MAX TEMPERATURE.....23-28.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........56-62 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH. GUSTS UP TO 15 MPH  
INCREASING TO 25 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......400-1000 FT AGL INCREASING TO 6600-8300 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (5600 KNOT-FT) INCREASING TO GOOD (79300  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0400. CHANCE OF SNOW SHOWERS  
UNTIL 0500.  
MIN TEMPERATURE.....1-6.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE WEST AFTER  
MIDNIGHT.  
MIXING HEIGHT.......600-1600 FT AGL.  
SMOKE DISPERSAL.....POOR (12700-13000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....17-22.  
24 HR TREND......7 DEGREES COOLER.  
MIN HUMIDITY........49-55 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......WINDY. WEST AROUND 20 MPH WITH GUSTS TO AROUND  
45 MPH INCREASING TO AROUND 30 MPH WITH GUSTS  
TO AROUND 55 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 30 MPH INCREASING TO AROUND 40 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......900-1400 FT AGL INCREASING TO 4400-4900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28100 KNOT-FT) INCREASING TO EXCELLENT  
(171700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 7. HIGHS IN THE LOWER 20S. WEST WINDS AROUND 20 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 13. HIGHS IN THE LOWER 30S.  
SOUTHWEST WINDS AROUND 20 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 12. HIGHS IN THE LOWER 30S. SOUTHWEST WINDS AROUND 10 MPH.   
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS AROUND 30.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 12. HIGHS IN THE LOWER 30S.  
 

 
 
WYZ309-232315-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF LIGHT FREEZING  
RAIN UNTIL 1200. CHANCE OF SNOW SHOWERS. CHANCE  
OF LIGHT FREEZING RAIN AFTER 1200. PATCHY FOG  
AFTER 0700 UNTIL 1000. PATCHY FOG AFTER 1500.  
MAX TEMPERATURE.....24-29.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........59-65 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......600-1200 FT AGL INCREASING TO 3000-5000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (7400-45600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0100. SLIGHT CHANCE OF LIGHT  
FREEZING RAIN UNTIL 2300. CHANCE OF SNOW  
SHOWERS UNTIL 0500.  
MIN TEMPERATURE.....5-10.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT. GUSTS UP TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE WEST AFTER  
MIDNIGHT.  
MIXING HEIGHT.......600-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (16100-19200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY CLOUDY.  
MAX TEMPERATURE.....19-27.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......WINDY. WEST 25 TO 30 MPH. GUSTS UP TO 50 MPH  
INCREASING TO 60 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 40 MPH INCREASING TO AROUND 50 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......700-1200 FT AGL INCREASING TO 3900-4900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28300 KNOT-FT) INCREASING TO EXCELLENT  
(187100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 10. HIGHS IN THE MID  
20S. WEST WINDS AROUND 25 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN THE MID 30S.  
WEST WINDS AROUND 20 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE MID 30S.  
WINDS GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE LOWER  
30S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE MID 30S.  
 

 
 
WYZ310-232315-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND  
SLIGHT CHANCE OF LIGHT FREEZING RAIN AFTER  
1100. PATCHY FOG AFTER 1600.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........65-71 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 3300-3800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (4000-43100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0100. SLIGHT CHANCE OF LIGHT  
FREEZING RAIN UNTIL 2300. CHANCE OF SNOW  
SHOWERS UNTIL 0500.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........94-100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTH 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.  
MIXING HEIGHT.......500-2000 FT AGL.  
SMOKE DISPERSAL.....POOR (8200-26300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900, THEN MOSTLY SUNNY.  
MAX TEMPERATURE.....28-33.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......19 PERCENT DRIER.  
20-FOOT WINDS.......BREEZY. WEST AROUND 15 MPH INCREASING TO  
NORTHWEST AROUND 25 MPH IN THE AFTERNOON. GUSTS  
UP TO 50 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 25 MPH INCREASING TO AROUND 35 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......500-1000 FT AGL INCREASING TO 5400-6500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (13000 KNOT-FT) INCREASING TO EXCELLENT  
(192100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS AROUND 13. HIGHS IN THE MID 30S.  
WEST WINDS AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 18. HIGHS IN THE LOWER 40S.  
WEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 18. HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS IN THE UPPER  
30S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS AROUND 40.  
 

 
 
NEZ311-232315-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1100 UNTIL 1700, THEN CHANCE OF SNOW  
SHOWERS.  
MAX TEMPERATURE.....23-28.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........64-70 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST AROUND 5 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON.  
MIXING HEIGHT.......400-900 FT AGL INCREASING TO 2100-3000 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2100-20700 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  
0500. SLIGHT CHANCE OF SNOW SHOWERS AFTER 0500.  
PATCHY FOG AFTER 2300.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......5 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......700-1300 FT AGL.  
SMOKE DISPERSAL.....POOR (8800-11200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1200, THEN MOSTLY SUNNY.  
SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1100.  
MAX TEMPERATURE.....27-33.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........44-50 PERCENT.  
24 HR TREND......17 PERCENT DRIER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH WITH GUSTS TO AROUND 35 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH INCREASING TO NORTHWEST  
AROUND 30 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......400-900 FT AGL INCREASING TO 4900-5800 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (6900 KNOT-FT) INCREASING TO VERY GOOD  
(129100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS AROUND 11. HIGHS IN THE MID 30S.  
WEST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS AROUND 40. WEST  
WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 14. HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 13. HIGHS IN THE MID 30S.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 13. HIGHS IN THE UPPER 30S.  
 

 
 
NEZ312-232315-  
BOX BUTTE/SOUTH SIOUX-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1100 UNTIL 1700, THEN CHANCE OF SNOW  
SHOWERS AND SLIGHT CHANCE OF LIGHT FREEZING  
RAIN.  
MAX TEMPERATURE.....25-30.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........66-72 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
20-FOOT WINDS.......NORTH AROUND 5 MPH SHIFTING TO THE EAST IN THE  
AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE  
SOUTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......700 FT AGL INCREASING TO 2800-3600 FT AGL IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (3000-31100 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS UNTIL 0500.  
SLIGHT CHANCE OF LIGHT FREEZING RAIN AFTER 1900  
UNTIL 2300. SLIGHT CHANCE OF SNOW SHOWERS AFTER  
0500. PATCHY FOG AFTER 2000.  
MIN TEMPERATURE.....11-16.  
24 HR TREND......7 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......900-2100 FT AGL.  
SMOKE DISPERSAL.....POOR (13800-21600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY SUNNY. SLIGHT CHANCE OF  
SNOW SHOWERS UNTIL 1100.  
MAX TEMPERATURE.....31-36.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........35-41 PERCENT.  
24 HR TREND......31 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 10 MPH INCREASING TO NORTHWEST  
AROUND 20 MPH IN THE AFTERNOON. GUSTS UP TO 35  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH INCREASING TO NORTHWEST  
AROUND 30 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 6100-6600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (9900 KNOT-FT) INCREASING TO EXCELLENT  
(165500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS IN THE UPPER 30S.  
WEST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE LOWER 40S.  
WEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 16. HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN  
10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 14. HIGHS IN THE UPPER 30S.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS AROUND 14. HIGHS AROUND 40.  
 

 
 
NEZ313-232315-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
306 AM MST FRI FEB 23 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1100 UNTIL 1400. SLIGHT CHANCE OF LIGHT  
FREEZING RAIN AFTER 1300 UNTIL 1700, THEN LIGHT  
FREEZING RAIN LIKELY AND CHANCE OF SNOW  
SHOWERS. LITTLE OR NO SNOW ACCUMULATION.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........72-78 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST AROUND 5 MPH SHIFTING TO THE EAST IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 5 MPH INCREASING TO SOUTHEAST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......500-1000 FT AGL INCREASING TO 3100-3600 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (4200-36600 KNOT-FT).  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF SNOW SHOWERS AND SLIGHT  
CHANCE OF LIGHT FREEZING RAIN UNTIL 2300. SNOW  
SHOWERS LIKELY AFTER 2300 UNTIL 0500, THEN  
SLIGHT CHANCE OF SNOW SHOWERS. PATCHY FOG AFTER  
1900. SNOW ACCUMULATION UP TO 2 INCHES.  
MIN TEMPERATURE.....11-16.  
24 HR TREND......5 DEGREES WARMER.  
MAX HUMIDITY........100 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.35 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......600-2100 FT AGL.  
SMOKE DISPERSAL.....POOR (9500-23800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY SUNNY. SLIGHT CHANCE OF  
SNOW SHOWERS UNTIL 1100.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........36-42 PERCENT.  
24 HR TREND......37 PERCENT DRIER.  
20-FOOT WINDS.......BREEZY. WEST AROUND 10 MPH WITH GUSTS TO AROUND  
35 MPH INCREASING TO NORTHWEST AROUND 25 MPH  
WITH GUSTS TO AROUND 45 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH INCREASING TO NORTHWEST  
AROUND 35 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 6200-6900 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (11000 KNOT-FT) INCREASING TO EXCELLENT  
(210700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
SUNDAY
 
PARTLY CLOUDY. LOWS AROUND 12. HIGHS IN THE UPPER 30S.  
WEST WINDS AROUND 15 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 14. HIGHS IN THE LOWER 40S.  
SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS AROUND 40. WINDS  
GENERALLY LESS THAN 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS  
AROUND 17. HIGHS IN THE UPPER 30S.    
THURSDAY
 
PARTLY CLOUDY. LOWS AROUND 17. HIGHS IN THE LOWER  
40S.  
 

 
 
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