882  
FNUS55 KMSO 110935  
FWFMSO  
 
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO  
NATIONAL WEATHER SERVICE MISSOULA MT  
335 AM MDT SUN APR 11 2021  
   
DISCUSSION
 
 
IDAHO: DRIER AND BREEZY CONDITIONS TODAY. TOMORROW A NORTHEAST GRADIENT  
WILL DEVELOP THAT WILL CONTINUE THROUGH THE END OF THE WEEK, NORTHEAST  
GUSTS 20 TO 25 MPH ALONG RIDGES WILL PREVAIL. MONDAY AND TUESDAY MAY BE  
SUNNIER AND THE DRIEST DAYS THROUGH THE WEEK.  
 
MONTANA: UNSTABLE SNOW SHOWERS IN THE MOUNTAINS ARE EXPECTED TODAY  
UNDER BREEZY NORTHWEST FLOW. STARTING MONDAY A NORTHEAST GRADIENT WILL  
DOMINATE THE WEATHER PATTERN THROUGH THE END OF THE WEEK. EXPECT GUSTS  
TO 35 MPH ON MONDAY AND 20 TO 30 MPH TUESDAY ONWARD. THE GRADIENT LOOKS  
TO RELAX THURSDAY EVENING. WITH AN EASTERLY UPSLOPE FLOW, SNOW SHOWERS  
CAN BE EXPECTED EACH DAY ALONG THE CONTINENTAL DIVIDE. ON WEDNESDAY AN  
UPPER LEVEL LOW WILL MOVE SOUTH OF IDAHO AND INCREASE CHANCES OF SNOW  
SHOWERS FOR SOUTHWEST MONTANA. THE PURCELL AND CABINET MOUNTAINS WILL  
LIKELY SEE THE LEAST CLOUD COVER THIS WEEK AND DRIEST CONDITIONS WITH  
MIN RHS DROPPING INTO THE UPPER THE 20S BY MID WEEK. MOST OTHER  
LOCATIONS WILL SEE INTERMITTENT CLOUDS AND RHS FLUCTUATING BETWEEN UPPER  
30S TO LOW 40S DURING THE WEEK.  
 
VIEW FIRE WEATHER BRIEFING VIDEOS ON OUR YOUTUBE CHANNEL  
AT HTTPS://WWW.YOUTUBE.COM/NWSMISSOULA  
 
IDZ102-103-120945-  
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-  
235 AM PDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....45-55 VALLEYS AND 30-40 RIDGES.  
* MIN HUMIDITY........27-37 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MIN TEMPERATURE.....18-28.  
* MAX HUMIDITY........65-75 PERCENT VALLEYS AND 59-69 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHWEST 5-10 MPH IN THE EVENING BECOMING  
DOWNSLOPE/DOWNVALLEY 1-3 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....48-58 VALLEYS AND 35-45 RIDGES.  
* MIN HUMIDITY........28-38 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING EAST 5-15 MPH.  
* RIDGE TOP............EAST 10-20 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
MOSTLY CLEAR. LOWS 25-35. HIGHS 45-55. EAST WINDS 15-25 MPH.   
WEDNESDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55. NORTHEAST WINDS  
15-25 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. NORTHEAST WINDS  
5-15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 30-40. HIGHS 55-65.    
SATURDAY
 
MOSTLY CLEAR. LOWS 30-40. HIGHS 60-70.  
 

 
 
MTZ104-105-120945-  
KOOTENAI-FLATHEAD/GLACIER PARK-  
335 AM MDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....45-55 VALLEYS AND 30-40 RIDGES.  
* MIN HUMIDITY........25-35 PERCENT VALLEYS AND 45-55 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH LATE IN  
THE AFTERNOON.  
* RIDGE TOP............WEST 5-15 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
CHANCE OF SNOW.  
* MIN TEMPERATURE.....15-25.  
* MAX HUMIDITY........65-75 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH EARLY IN THE  
EVENING BECOMING DOWNSLOPE/DOWNVALLEY 1-3 MPH.  
* RIDGE TOP............EAST 5-15 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW.  
* MAX TEMPERATURE.....45-55 VALLEYS AND 30-40 RIDGES.  
* MIN HUMIDITY........23-33 PERCENT VALLEYS AND 45-55 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 15-25 MPH EARLY IN THE AFTERNOON,  
THEN DECREASING TO 10-15 MPH LATE IN THE AFTERNOON.  
* RIDGE TOP............NORTHEAST 10-20 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS 20-30. HIGHS  
35-45. NORTHEAST WINDS 20-30 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW. LOWS 25-35. HIGHS  
40-50. NORTHEAST WINDS 20-30 MPH.    
THURSDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW. LOWS 25-35. HIGHS 45-55.  
NORTHEAST WINDS 10-20 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW. LOWS 25-35. HIGHS  
50-60.    
SATURDAY
 
MOSTLY CLEAR. LOWS 25-35. HIGHS 55-65.  
 

 
 
MTZ106-108-120945-  
WEST LOLO-EAST LOLO-  
335 AM MDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....40-50 VALLEYS AND 33-43 RIDGES.  
* MIN HUMIDITY........23-33 PERCENT VALLEYS AND 34-44 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............WEST 5-15 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SLIGHT CHANCE OF SNOW.  
* MIN TEMPERATURE.....20-25.  
* MAX HUMIDITY........65-75 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING  
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTHEAST 5-15 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....40-50 VALLEYS AND 33-43 RIDGES.  
* MIN HUMIDITY........24-34 PERCENT VALLEYS AND 35-45 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING NORTHEAST 20-30 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............EAST 5-15 MPH INCREASING TO 15-25 MPH IN THE  
AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 35-45. EAST WINDS  
20-30 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS 20-30.  
HIGHS 35-45. NORTHEAST WINDS 20-30 MPH.    
THURSDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS 25-35. HIGHS  
40-50. NORTHEAST WINDS 5-15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 50-60.    
SATURDAY
 
MOSTLY CLEAR. LOWS 25-35. HIGHS 55-65.  
 

 
 
MTZ107-120945-  
SALISH AND KOOTENAI RESERVATION-  
335 AM MDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....45-50 VALLEYS AND 25-30 RIDGES.  
* MIN HUMIDITY........23-33 PERCENT VALLEYS AND 35-45 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............WEST 5-15 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SNOW.  
* MIN TEMPERATURE.....25-30 VALLEYS AND 15-20 RIDGES.  
* MAX HUMIDITY........66-76 PERCENT VALLEYS AND 73-83 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH.  
* RIDGE TOP............NORTHWEST 5-10 MPH BECOMING EAST 5-15 MPH IN  
THE LATE EVENING AND OVERNIGHT.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....50-55 VALLEYS AND 30-35 RIDGES.  
* MIN HUMIDITY........20-30 PERCENT VALLEYS AND 31-41 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING NORTHEAST 10-20 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............EAST 5-15 MPH INCREASING TO NORTHEAST 15-25  
MPH IN THE AFTERNOON.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 40-50. NORTHEAST WINDS  
20-30 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55. NORTHEAST WINDS  
20-30 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 50-60. NORTHEAST WINDS  
5-15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 30-40. HIGHS 55-65.    
SATURDAY
 
MOSTLY CLEAR. LOWS 30-40. HIGHS 55-65.  
 

 
 
MTZ109-120945-  
BITTERROOT-  
335 AM MDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....45-50 VALLEYS AND 30-35 RIDGES.  
* MIN HUMIDITY........19-29 PERCENT VALLEYS AND 33-43 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............NORTHWEST 5-15 MPH BECOMING 5-10 MPH IN THE  
AFTERNOON.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW.  
* MIN TEMPERATURE.....15-25.  
* MAX HUMIDITY........64-74 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHWEST 5-10 MPH.  
* RIDGE TOP............NORTHEAST 5-15 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....45-50 VALLEYS AND 30-35 RIDGES.  
* MIN HUMIDITY........20-30 PERCENT VALLEYS AND 31-41 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING NORTHEAST 10-20 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............EAST 10-20 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
PARTLY CLOUDY. LOWS 20-30. HIGHS 35-45. NORTHEAST WINDS  
20-30 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS 20-30.  
HIGHS 35-45. NORTHEAST WINDS 20-30 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS 20-30. HIGHS  
40-50. NORTHEAST WINDS 5-15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55.    
SATURDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 50-60.  
 

 
 
MTZ110-111-120945-  
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-  
335 AM MDT SUN APR 11 2021  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....35-45 VALLEYS AND 30-35 RIDGES.  
* MIN HUMIDITY........24-34 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............NORTHWEST 5-15 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
SLIGHT CHANCE OF SNOW.  
* MIN TEMPERATURE.....15-25.  
* MAX HUMIDITY........65-75 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTH 5-15 MPH.  
* RIDGE TOP............NORTHEAST 5-15 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...10 PERCENT.  
   
MONDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW.  
* MAX TEMPERATURE.....35-45 VALLEYS AND 30-35 RIDGES.  
* MIN HUMIDITY........28-38 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 10-20 MPH.  
* RIDGE TOP............NORTHEAST 10-20 MPH.  
* HAINES INDEX........2 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TUESDAY
 
PARTLY CLOUDY. LOWS 15-25. HIGHS 30-40. NORTHEAST WINDS  
20-30 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS 20-30. HIGHS  
30-40. NORTHEAST WINDS 20-30 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS 20-30. HIGHS 35-45.  
NORTHEAST WINDS 10-20 MPH.    
FRIDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. LOWS 25-35. HIGHS  
40-50.    
SATURDAY
 
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55.  
 

 
 
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