021  
FNUS55 KMSO 190951  
FWFMSO  
 
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO  
NATIONAL WEATHER SERVICE MISSOULA MT  
351 AM MDT TUE SEP 19 2017  
   
DISCUSSION
 
 
IDAHO AND MONTANA: SCATTERED SHOWERS THIS MORNING WILL BECOME MORE WIDESPREAD  
THROUGHOUT THE DAY TODAY AS THE REGION REMAINS UNDER A VERY WET, COOL  
PATTERN. SNOW HAS BEEN OBSERVED ACROSS NORTH CENTRAL IDAHO AND WESTERN  
MONTANA DOWN TO ROUGHLY 5000 FEET, WITH SNOW SHOWERS EXPECTED AGAIN  
TODAY DOWN TO ABOUT THE SAME ELEVATION. RAIN WILL OVERSPREAD THE REGION,  
WITH NEAR-FREEZING TO BELOW-FREEZING TEMPERATURES EXPECTED TONIGHT.  
WEDNESDAY AND THURSDAY WILL ALSO BE WET WITH BELOW NORMAL TEMPERATURES.  
A DRY PERIOD IS POSSIBLE THIS WEEKEND INTO EARLY NEXT WEEK.  
 
FOLLOW US ON TWITTER AT HTTPS://TWITTER.COM/NWSMISSOULA  
 
IDZ102-103-201000-  
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-  
251 AM PDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........RAIN AND SNOW. SNOW LEVEL 5500 FEET.  
* MAX TEMPERATURE.....50-60 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........54-64 PERCENT VALLEYS AND 70-80 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............WEST 5-10 MPH BECOMING SOUTHWEST 10-20 MPH  
IN THE LATE MORNING AND AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...70 PERCENT IN THE PALOUSE/HELLS CANYON...AND  
90 PERCENT IN THE CLEARWATER/NEZ PERCE.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW. SNOW LEVEL 5500  
FEET.  
* MIN TEMPERATURE.....35-40 VALLEYS AND 25-35 RIDGES.  
* MAX HUMIDITY........88-98 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTH 5-10 MPH.  
* RIDGE TOP............SOUTHWEST 10-20 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT IN THE PALOUSE/HELLS CANYON...AND  
90 PERCENT IN THE CLEARWATER/NEZ PERCE.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........RAIN AND SNOW. SNOW LEVEL 5500 FEET.  
* MAX TEMPERATURE.....50-60 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........58-68 PERCENT VALLEYS AND 72-82 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.  
* RIDGE TOP............SOUTHWEST 25-35 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...80 PERCENT IN THE PALOUSE/HELLS CANYON...AND  
100 PERCENT IN THE CLEARWATER/NEZ PERCE.  
   
THURSDAY
 
CLOUDY WITH RAIN SHOWERS AND SNOW SHOWERS LIKELY. LOWS  
35-45. HIGHS 50-60. SOUTHWEST WINDS 10-20 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 35-45. HIGHS 50-60. NORTH WINDS 5-10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS 30-40. HIGHS 50-60. VARIABLE WINDS UP TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS 30-40.  
HIGHS 55-65.    
MONDAY
 
PARTLY CLOUDY. LOWS 35-45. HIGHS 55-65.  
 

 
 
MTZ104-105-201000-  
KOOTENAI-FLATHEAD/GLACIER PARK-  
351 AM MDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........RAIN AND SNOW. SNOW LEVEL 5000 FEET.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........52-62 PERCENT VALLEYS AND 70-80 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............WEST 10-20 MPH INCREASING TO SOUTHWEST 20-30  
MPH IN THE LATE MORNING AND AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW. SNOW LEVEL 5500  
FEET.  
* MIN TEMPERATURE.....23-33 VALLEYS AND 30-35 RIDGES.  
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 92-97 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTH 5-10 MPH.  
* RIDGE TOP............SOUTHWEST 20-30 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW LIKELY. SNOW  
LEVEL 5500 FEET.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........47-57 PERCENT VALLEYS AND 60-70 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............SOUTHWEST 20-30 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...50 PERCENT.  
   
THURSDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 30-40. HIGHS 45-55. SOUTHWEST WINDS 15-25 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 30-40. HIGHS 45-55. NORTHEAST WINDS 5-10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS 25-35. HIGHS 45-55. EAST WINDS 5-10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS 25-35. HIGHS 50-60.    
MONDAY
 
PARTLY CLOUDY. LOWS 35-45. HIGHS 50-60.  
 

 
 
MTZ106-108-201000-  
WEST LOLO-EAST LOLO-  
351 AM MDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN WITH SNOW LIKELY. SNOW  
LEVEL 5500 FEET.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........57-67 PERCENT VALLEYS AND 70-80 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............WEST 15-25 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...70 PERCENT IN THE WEST LOLO...AND 30 PERCENT  
IN THE EAST LOLO.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW. SNOW LEVEL 5500  
FEET.  
* MIN TEMPERATURE.....25-35.  
* MAX HUMIDITY........89-98 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTH 5-10 MPH.  
* RIDGE TOP............SOUTHWEST 10-20 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT IN THE WEST LOLO...AND 30 PERCENT  
IN THE EAST LOLO.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW. SNOW LEVEL 5500  
FEET.  
* MAX TEMPERATURE.....45-50 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........58-68 PERCENT VALLEYS AND 66-76 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING SOUTHWEST 10-20 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............SOUTHWEST 20-30 MPH.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...70 PERCENT.  
   
THURSDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 30-40. HIGHS 45-55. SOUTHWEST WINDS 15-25 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 30-40. HIGHS 45-55. NORTH WINDS 5-10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE  
OF RAIN SHOWERS. LOWS 25-35. HIGHS 45-55. VARIABLE WINDS UP TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS 25-35. HIGHS 50-60.    
MONDAY
 
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60.  
 

 
 
MTZ107-201000-  
SALISH AND KOOTENAI RESERVATION-  
351 AM MDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........SNOW LIKELY IN THE MORNING. RAIN. SNOW LEVEL  
5000 FEET.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........54-64 PERCENT VALLEYS AND 73-83 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............WEST 15-25 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...50 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........CLOUDY. RAIN. SNOW AFTER MIDNIGHT. SNOW LEVEL  
5500 FEET.  
* MIN TEMPERATURE.....30-40.  
* MAX HUMIDITY........84-94 PERCENT VALLEYS AND 97 PERCENT RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTH 5-10 MPH.  
* RIDGE TOP............SOUTHWEST 10-20 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...50 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........CLOUDY. SNOW IN THE MORNING. RAIN LIKELY.  
SNOW LEVEL 5500 FEET.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........50-60 PERCENT VALLEYS AND 65-75 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING 10-20 MPH IN THE AFTERNOON.  
* RIDGE TOP............SOUTHWEST 15-25 MPH.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT.  
   
THURSDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS. LOWS 35-45.  
HIGHS 50-60. SOUTHWEST WINDS 15-25 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 35-45. HIGHS 50-60. VARIABLE WINDS UP TO 10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE  
OF RAIN SHOWERS. LOWS 30-40. HIGHS 50-60. VARIABLE WINDS UP TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS 30-40.  
HIGHS 55-65.    
MONDAY
 
PARTLY CLOUDY. LOWS 35-45. HIGHS 55-65.  
 

 
 
MTZ109-201000-  
BITTERROOT-  
351 AM MDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW. SNOW LEVEL 6000  
FEET.  
* MAX TEMPERATURE.....45-55 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........49-59 PERCENT VALLEYS AND 64-74 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............WEST 5-10 MPH INCREASING TO 15-25 MPH IN THE  
LATE MORNING AND AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...70 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........CLOUDY. RAIN AND SNOW. SNOW LEVEL 6000 FEET.  
* MIN TEMPERATURE.....25-35.  
* MAX HUMIDITY........82-92 PERCENT VALLEYS AND 88-96 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTH 5-10 MPH.  
* RIDGE TOP............SOUTHWEST 15-25 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...60 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........RAIN AND SNOW. SNOW LEVEL 6000 FEET.  
* MAX TEMPERATURE.....45-50 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........52-62 PERCENT VALLEYS AND 68-78 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 10-15 MPH.  
* RIDGE TOP............SOUTHWEST 20-30 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...90 PERCENT.  
   
THURSDAY
 
MOSTLY CLOUDY WITH RAIN SHOWERS AND SNOW SHOWERS LIKELY.  
LOWS 30-40. HIGHS 40-50. SOUTHWEST WINDS 15-25 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 30-40. HIGHS 40-50. VARIABLE WINDS UP TO 10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE  
OF RAIN SHOWERS. LOWS 20-30. HIGHS 40-50. VARIABLE WINDS UP TO 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS 25-35. HIGHS 45-55.    
MONDAY
 
PARTLY CLOUDY. LOWS 30-40. HIGHS 45-55.  
 

 
 
MTZ110-111-201000-  
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-  
351 AM MDT TUE SEP 19 2017  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW AND RAIN LIKELY. CHANCE  
OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 6000 FEET.  
* MAX TEMPERATURE.....40-50 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........55-65 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......WEST 5-15 MPH.  
* RIDGE TOP............WEST 15-25 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................3.  
* CWR (> 0.10 INCH)...40 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN AND SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF SNOW. SNOW  
LEVEL 6000 FEET.  
* MIN TEMPERATURE.....25-30.  
* MAX HUMIDITY........83-93 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.  
* RIDGE TOP............SOUTHWEST 15-25 MPH.  
* LAL.................3.  
* CWR (> 0.10 INCH)...10 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW WITH RAIN LIKELY. CHANCE  
OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 6500 FEET.  
* MAX TEMPERATURE.....43-53 VALLEYS AND 35-40 RIDGES.  
* MIN HUMIDITY........51-61 PERCENT VALLEYS AND 57-67 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......SOUTHWEST 15-25 MPH.  
* RIDGE TOP............SOUTHWEST 20-30 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................3.  
* CWR (> 0.10 INCH)...70 PERCENT IN THE DEERLODGE/WEST  
BEAVERHEAD...AND 40 PERCENT IN THE EAST BEAVERHEAD.  
   
THURSDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND RAIN. LOWS  
30-40. HIGHS 40-50. SOUTHWEST WINDS 15-25 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY AND CHANCE OF RAIN.  
LOWS 25-35. HIGHS 35-45. NORTH WINDS 5-10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS, RAIN SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. LOWS 25-35. HIGHS 40-50. NORTH WINDS  
5-10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS 25-35.  
HIGHS 40-50.    
MONDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 40-50.  
 

 
 
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