661  
FNUS55 KBYZ 151208  
FWFBYZ  
 
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA  
NATIONAL WEATHER SERVICE BILLINGS MT  
508 AM MST FRI DEC 15 2017  
   
DISCUSSION
 
 
GUSTY WINDS CAN BE EXPECTED TODAY AHEAD OF A COLD FRONT THAT WILL  
MOVE ACROSS THE FIRE DISTRICT TONIGHT. WIND GUSTS AROUND 60 MPH  
WILL BE LIKELY FOR ZONES 124 AND 125 THROUGH THIS AFTERNOON. SNOW  
WILL MOVE INTO THE AREA TONIGHT AND SATURDAY WITH SOME  
ACCUMULATIONS LIKELY MAINLY FOR ZONES 123-129, AS WELL AS 274.  
TEMPERATURES TODAY WILL BE IN THE UPPER 40S TO LOWER 50S WITH  
AFTERNOON HUMIDITIES ABOVE 25 PERCENT. TEMPERATURES WILL BE COLDER  
ON SATURDAY WITH 30S COMMON.  
 
THIS WILL BE THE LAST FIRE WEATHER FORECAST NEEDED AS  
TEMPERATURES WILL BE COOLER AND CONDITIONS WETTER FOR THE WEEKEND  
INTO NEXT WEEK. HOOLEY  
 
MTZ123-152315-  
GALLATIN NATIONAL FOREST-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........PARTLY SUNNY.  
* MAX TEMPERATURE.......35-45 AT 5000 FEET...29-39 AT 7000 FEET.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MIN HUMIDITY..........43-53 PERCENT AT 5000 FEET...46-56 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........10 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 10 TO 20 MPH.  
* RIDGETOP.............WEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLOUDY. ISOLATED SNOW SHOWERS IN THE  
EVENING...THEN SNOW OVERNIGHT.  
* MIN TEMPERATURE.......19-26 AT 5000 FEET...11-21 AT 7000 FEET.  
* 24 HR TREND.........4 DEGREES COOLER.  
* MAX HUMIDITY..........79-89 PERCENT AT 5000 FEET...81-91 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........21 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 15 TO 30 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................70 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW.  
* MAX TEMPERATURE.......26-32 AT 5000 FEET...19-28 AT 7000 FEET.  
* 24 HR TREND.........11 DEGREES COOLER.  
* MIN HUMIDITY..........63-73 PERCENT AT 5000 FEET...65-75 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........23 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............NORTHWEST 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................70 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 7 TO 17. WEST WINDS 5 TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 13 TO 23.  
HIGHS 27 TO 34. SOUTHWEST WINDS 5 TO 10 MPH.    
MONDAY
 
CLOUDY. SCATTERED SNOW SHOWERS. LOWS 19 TO 29. HIGHS  
31 TO 40. SOUTHWEST WINDS 5 TO 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 24 TO 34.  
HIGHS 36 TO 43. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS 16 TO 26.  
HIGHS 32 TO 39.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
19 TO 25.  
 

 
 
MTZ124-152315-  
WHEATLAND COUNTY/SWEET GRASS COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......46-51.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........27-32 PERCENT.  
* 24 HR TREND.........14 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WINDY. WEST WINDS 20 TO 35 MPH WITH GUSTS TO  
AROUND 50 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLOUDY. SCATTERED RAIN AND SNOW SHOWERS IN  
THE EVENING...THEN SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......25-30.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MAX HUMIDITY..........74-79 PERCENT.  
* 24 HR TREND.........10 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 15 TO 25 MPH. GUSTS UP TO 40 MPH  
IN THE EVENING...DECREASING TO 30 MPH OVERNIGHT.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW LIKELY.  
* MAX TEMPERATURE.......29-34.  
* 24 HR TREND.........17 DEGREES COOLER.  
* MIN HUMIDITY..........62-67 PERCENT.  
* 24 HR TREND.........35 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. PARTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 12 TO 17. NORTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 15 TO 25.  
HIGHS 32 TO 37. WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
40 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
23 TO 28. HIGHS 37 TO 42. WEST WINDS 15 TO 25 MPH WITH GUSTS TO  
AROUND 40 MPH.    
TUESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 24 TO 29.  
HIGHS 38 TO 43. SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND  
30 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 15 TO  
25. HIGHS 33 TO 38.    
THURSDAY
 
MOSTLY SUNNY. HIGHS 21 TO 26.  
 

 
 
MTZ125-152315-  
STILLWATER COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......46-51.  
* 24 HR TREND.........2 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 15 TO 25 MPH. GUSTS UP TO 35  
MPH IN THE MORNING.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN AND SNOW  
SHOWERS IN THE EVENING...THEN SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......24-29.  
* 24 HR TREND.........3 DEGREES COOLER.  
* MAX HUMIDITY..........69-74 PERCENT.  
* 24 HR TREND.........19 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH  
OVERNIGHT.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW LIKELY.  
* MAX TEMPERATURE.......31-36.  
* 24 HR TREND.........15 DEGREES COOLER.  
* MIN HUMIDITY..........49-54 PERCENT.  
* 24 HR TREND.........24 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTH WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................60 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS 14 TO 19. NORTHWEST WINDS 5 TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 16 TO 26.  
HIGHS 33 TO 38. SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
35 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
24 TO 29. HIGHS 40 TO 45. WEST WINDS 15 TO 25 MPH WITH GUSTS TO  
AROUND 35 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
27 TO 32. HIGHS 42 TO 47. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
17 TO 27. HIGHS 39 TO 44.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
24 TO 29.  
 

 
 
MTZ126-152315-  
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......39-47 AT 5000 FEET...33-43 AT 7000 FEET.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........26-36 PERCENT AT 5000 FEET...31-41 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........2 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WINDY IN THE MORNING...INCREASING TO VERY  
WINDY IN THE AFTERNOON. WEST WINDS 15 TO 30 MPH WITH GUSTS TO  
AROUND 50 MPH IN THE MORNING...INCREASING TO SOUTHWEST 30 TO 45  
MPH WITH GUSTS TO AROUND 65 MPH IN THE AFTERNOON.  
* RIDGETOP.............NORTHWEST 30 TO 45 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE  
EVENING...THEN SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......24-29 AT 5000 FEET...15-25 AT 7000 FEET.  
* 24 HR TREND.........13 DEGREES COOLER.  
* MAX HUMIDITY..........69-79 PERCENT AT 5000 FEET...71-81 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........33 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WINDY IN THE EVENING. WEST WINDS 15 TO 30  
MPH WITH GUSTS TO AROUND 55 MPH IN THE EVENING...DIMINISHING TO  
10 TO 20 MPH OVERNIGHT.  
* RIDGETOP.............WEST 25 TO 40 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW LIKELY.  
* MAX TEMPERATURE.......28-33 AT 5000 FEET...22-28 AT 7000 FEET.  
* 24 HR TREND.........19 DEGREES COOLER.  
* MIN HUMIDITY..........54-64 PERCENT AT 5000 FEET...58-68 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........32 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................70 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
12 TO 17. NORTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 15 TO 25.  
HIGHS 27 TO 35. WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
35 MPH.    
MONDAY
 
WINDY. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
20 TO 28. HIGHS 32 TO 41. WEST WINDS 15 TO 30 MPH WITH GUSTS TO  
AROUND 40 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 22 TO 32.  
HIGHS 34 TO 43. SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
30 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS 16 TO 26.  
HIGHS 33 TO 40.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
17 TO 25.  
 

 
 
MTZ127-152315-  
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......48-53.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........23-28 PERCENT.  
* 24 HR TREND.........10 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WINDY. WEST WINDS 20 TO 35 MPH WITH GUSTS TO  
AROUND 45 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN AND SNOW  
SHOWERS IN THE EVENING...THEN SNOW AND RAIN LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......25-30.  
* 24 HR TREND.........8 DEGREES COOLER.  
* MAX HUMIDITY..........61-66 PERCENT.  
* 24 HR TREND.........9 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 15 TO 25 MPH. GUSTS UP TO 35  
MPH IN THE EVENING.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE MORNING...THEN  
SCATTERED SNOW SHOWERS IN THE AFTERNOON.  
* MAX TEMPERATURE.......30-35.  
* 24 HR TREND.........18 DEGREES COOLER.  
* MIN HUMIDITY..........47-52 PERCENT.  
* 24 HR TREND.........24 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................30 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. PARTLY CLOUDY. LOWS 16 TO 21. NORTHWEST  
WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 19 TO 29.  
HIGHS 33 TO 38. SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
40 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED RAIN AND SNOW SHOWERS. LOWS  
26 TO 31. HIGHS 38 TO 43. WEST WINDS 10 TO 20 MPH WITH GUSTS TO  
AROUND 35 MPH.    
TUESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
27 TO 32. HIGHS 38 TO 43. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 18 TO  
28. HIGHS 35 TO 40.    
THURSDAY
 
COLDER. PARTLY SUNNY. HIGHS 22 TO 27.  
 

 
 
MTZ128-152315-  
YELLOWSTONE COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......51-56.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO  
AROUND 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW AND RAIN LIKELY  
OVERNIGHT.  
* MIN TEMPERATURE.......28-33.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MAX HUMIDITY..........79-84 PERCENT.  
* 24 HR TREND.........19 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................30 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW LIKELY.  
* MAX TEMPERATURE.......33-38.  
* 24 HR TREND.........18 DEGREES COOLER.  
* MIN HUMIDITY..........57-62 PERCENT.  
* 24 HR TREND.........32 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................50 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. PARTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 16 TO 21. NORTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 18 TO 27.  
HIGHS 34 TO 39. SOUTHWEST WINDS 10 TO 20 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
24 TO 29. HIGHS 41 TO 46. WEST WINDS 10 TO 20 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
26 TO 31. HIGHS 41 TO 46. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
17 TO 27. HIGHS 38 TO 43.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
24 TO 29.  
 

 
 
MTZ129-152315-  
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......41-51 AT 5000 FEET...39-44 AT 7000 FEET.  
* 24 HR TREND.........13 DEGREES WARMER.  
* MIN HUMIDITY..........27-37 PERCENT AT 5000 FEET...23-33 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........26 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH  
IN THE MORNING.  
* RIDGETOP.............NORTHWEST 35 TO 50 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......22-27 AT 5000 FEET...19-24 AT 7000 FEET.  
* 24 HR TREND.........4 DEGREES COOLER.  
* MAX HUMIDITY..........69-74 PERCENT.  
* 24 HR TREND.........6 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30  
MPH OVERNIGHT.  
* RIDGETOP.............NORTHWEST 30 TO 45 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................30 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW.  
* MAX TEMPERATURE.......26-33 AT 5000 FEET...23-28 AT 7000 FEET.  
* 24 HR TREND.........17 DEGREES COOLER.  
* MIN HUMIDITY..........63-73 PERCENT AT 5000 FEET...65-75 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........38 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH.  
* RIDGETOP.............NORTH 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................60 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 13 TO 18. WEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 16 TO 26.  
HIGHS 26 TO 34. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
21 TO 29. HIGHS 31 TO 40. WEST WINDS 10 TO 20 MPH WITH GUSTS TO  
AROUND 30 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 22 TO 32.  
HIGHS 34 TO 40. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS WITH ISOLATED  
SHOWERS. LOWS 15 TO 25. HIGHS 32 TO 40.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
16 TO 23.  
 

 
 
MTZ130-152315-  
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......51-56.  
* 24 HR TREND.........14 DEGREES WARMER.  
* MIN HUMIDITY..........24-29 PERCENT.  
* 24 HR TREND.........24 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......27-32.  
* 24 HR TREND.........4 DEGREES WARMER.  
* MAX HUMIDITY..........76-81 PERCENT.  
* 24 HR TREND.........6 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................20 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY. SCATTERED SNOW SHOWERS IN THE  
MORNING...THEN ISOLATED RAIN AND SNOW SHOWERS IN THE AFTERNOON.  
* MAX TEMPERATURE.......35-40.  
* 24 HR TREND.........16 DEGREES COOLER.  
* MIN HUMIDITY..........44-49 PERCENT.  
* 24 HR TREND.........20 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................20 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. LOWS 16 TO 21. NORTHWEST  
WINDS 5 TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 18 TO 27.  
HIGHS 38 TO 43. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED RAIN AND SNOW SHOWERS. LOWS  
23 TO 28. HIGHS 41 TO 46. WEST WINDS 10 TO 20 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 24 TO 29.  
HIGHS 41 TO 46. SOUTH WINDS 5 TO 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
16 TO 26. HIGHS 39 TO 44.    
THURSDAY
 
COLDER. PARTLY SUNNY. HIGHS 24 TO 29.  
 

 
 
MTZ131-152315-  
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT  
CUSTER NATL FOREST-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......51-56.  
* 24 HR TREND.........14 DEGREES WARMER.  
* MIN HUMIDITY..........21-26 PERCENT.  
* 24 HR TREND.........23 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTHWEST 30 TO 45 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......28-33.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........76-81 PERCENT.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTHWEST 30 TO 45 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................20 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW LIKELY. RAIN LIKELY IN THE  
AFTERNOON.  
* MAX TEMPERATURE.......34-39.  
* 24 HR TREND.........17 DEGREES COOLER.  
* MIN HUMIDITY..........54-59 PERCENT.  
* 24 HR TREND.........33 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTH 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................40 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 15 TO 20. NORTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 17 TO 26.  
HIGHS 34 TO 39. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
23 TO 28. HIGHS 41 TO 46. WEST WINDS 5 TO 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 24 TO 29.  
HIGHS 39 TO 44. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
16 TO 26. HIGHS 41 TO 46.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
22 TO 27.  
 

 
 
MTZ132-152315-  
CUSTER COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......45-50.  
* 24 HR TREND.........14 DEGREES WARMER.  
* MIN HUMIDITY..........33-38 PERCENT.  
* 24 HR TREND.........29 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......24-29.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MAX HUMIDITY..........86-91 PERCENT.  
* 24 HR TREND.........11 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................10 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY. SCATTERED SNOW SHOWERS...MAINLY IN  
THE MORNING.  
* MAX TEMPERATURE.......32-37.  
* 24 HR TREND.........13 DEGREES COOLER.  
* MIN HUMIDITY..........56-61 PERCENT.  
* 24 HR TREND.........23 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................LESS THAN 10 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. LOWS 14 TO 19. NORTHWEST  
WINDS 5 TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 16 TO 26.  
HIGHS 34 TO 39. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
22 TO 27. HIGHS 37 TO 42. WEST WINDS 10 TO 20 MPH WITH GUSTS TO  
AROUND 30 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 22 TO 27.  
HIGHS 37 TO 42. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW AND RAIN SHOWERS. LOWS  
13 TO 23. HIGHS 37 TO 42.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
18 TO 23.  
 

 
 
MTZ133-152315-  
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY.  
* MAX TEMPERATURE.......50-55.  
* 24 HR TREND.........19 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........39 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY.  
* MIN TEMPERATURE.......25-30.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MAX HUMIDITY..........100 PERCENT.  
* 24 HR TREND.........UNCHANGED.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SCATTERED SNOW SHOWERS.  
* MAX TEMPERATURE.......34-39.  
* 24 HR TREND.........16 DEGREES COOLER.  
* MIN HUMIDITY..........59-64 PERCENT.  
* 24 HR TREND.........34 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................20 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS.  
LOWS 16 TO 21. NORTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS 18 TO 24. HIGHS 35 TO 40. SOUTHWEST  
WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 21 TO 26.  
HIGHS 39 TO 44. WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND  
30 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 21 TO 26.  
HIGHS 39 TO 44. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 13 TO  
23. HIGHS 39 TO 44.    
THURSDAY
 
COLDER. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. HIGHS  
19 TO 24.  
 

 
 
WYZ274-152315-  
SHERIDAN COUNTY-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......52-57.  
* 24 HR TREND.........12 DEGREES WARMER.  
* MIN HUMIDITY..........26-31 PERCENT.  
* 24 HR TREND.........16 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............NORTHWEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY OVERNIGHT.  
* MIN TEMPERATURE.......25-30.  
* 24 HR TREND.........9 DEGREES WARMER.  
* MAX HUMIDITY..........100 PERCENT.  
* 24 HR TREND.........14 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............NORTHWEST 15 TO 25 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................30 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW.  
* MAX TEMPERATURE.......32-37.  
* 24 HR TREND.........20 DEGREES COOLER.  
* MIN HUMIDITY..........64-69 PERCENT.  
* 24 HR TREND.........38 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTH 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................70 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS 13 TO 18. NORTHWEST WINDS 5 TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 15 TO 21.  
HIGHS 35 TO 40. SOUTHWEST WINDS 5 TO 10 MPH.    
MONDAY
 
MOSTLY CLOUDY. ISOLATED RAIN AND SNOW SHOWERS. LOWS  
19 TO 24. HIGHS 42 TO 47. WEST WINDS 5 TO 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY. LOWS 21 TO 26. HIGHS 41 TO 46.  
SOUTHWEST WINDS 5 TO 10 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 14 TO  
24. HIGHS 41 TO 46.    
THURSDAY
 
COLDER. PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS  
23 TO 28.  
 

 
 
WYZ284-152315-  
BIGHORN NATIONAL FOREST-  
508 AM MST FRI DEC 15 2017  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......37-42.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........26-31 PERCENT.  
* 24 HR TREND.........6 PERCENT WETTER.  
* WIND (20 FT)  
* AT BURGESS JCT.......SOUTHWEST WINDS 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW OVERNIGHT.  
* MIN TEMPERATURE.......15-20.  
* 24 HR TREND.........1 DEGREE WARMER.  
* MAX HUMIDITY..........75-80 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* AT BURGESS JCT.......WEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................50 PERCENT.  
   
SATURDAY
 
 
* SKY/WEATHER...........CLOUDY WITH SNOW.  
* MAX TEMPERATURE.......21-26.  
* 24 HR TREND.........16 DEGREES COOLER.  
* MIN HUMIDITY..........63-68 PERCENT.  
* 24 HR TREND.........37 PERCENT WETTER.  
* WIND (20 FT)  
* AT BURGESS JCT.......NORTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................80 PERCENT.  
* HAINES INDEX..........2.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
SATURDAY NIGHT
 
COLDER. MOSTLY CLOUDY. SNOW LIKELY. LOWS 5 TO  
10. NORTHWEST WINDS 5 TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 7 TO 15.  
HIGHS 22 TO 27. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 13 TO 18.  
HIGHS 27 TO 32. WEST WINDS 10 TO 20 MPH.    
TUESDAY
 
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 16 TO 21.  
HIGHS 30 TO 35. SOUTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 8 TO 18.  
HIGHS 29 TO 34.    
THURSDAY
 
COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. HIGHS  
11 TO 16.  
 

 
 
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