581  
FNUS55 KMSO 271012  
FWFMSO  
 
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO  
NATIONAL WEATHER SERVICE MISSOULA MT  
412 AM MDT SAT MAY 27 2017  
 
   
DISCUSSION
 
 
IDAHO: A RIDGE OF HIGH PRESSURE WILL BE BUILDING OVER THE REGION FOR  
THE NEXT COUPLE OF DAYS CAUSING TEMPERATURES TO STEADILY WARM WITH  
DECREASING HUMIDITY READINGS. A FEW SHOWERS AND THUNDERSTORMS COULD  
DEVELOP ALONG THE CREST OF THE CLEARWATER AND BITTERROOT RANGES EACH  
AFTERNOON/EVENING. THESE STORMS WILL PROVIDE LITTLE PRECIPITATION, BUT  
GUSTY AND ERRATIC WINDS SHOULD BE ANTICIPATED NEAR THE CONVECTION. THE  
RIDGE BEGINS TO BREAK DOWN TOWARDS THE MIDDLE OF THE WEEK WHICH WILL  
ALLOW FOR AN INCREASE IN WINDS AND THUNDERSTORM THREAT EACH DAY.  
 
MONTANA: A RIDGE OF HIGH PRESSURE WILL BE BUILDING OVER THE REGION FOR  
THE NEXT COUPLE OF DAYS CAUSING TEMPERATURES TO STEADILY WARM WITH  
DECREASING HUMIDITY READINGS. EVEN THOUGH A RIDGE IS BUILDING, THE  
REGION WILL STILL HAVE A LOW THREAT OF AFTERNOON AND EVENING SHOWERS AND  
THUNDERSTORMS. THESE STORMS WILL PROVIDE LITTLE PRECIPITATION, BUT  
GUSTY AND ERRATIC WINDS SHOULD BE ANTICIPATED NEAR THE CONVECTION. THE  
RIDGE BEGINS TO BREAK DOWN TOWARDS THE MIDDLE OF THE WEEK WHICH WILL  
ALLOW FOR AN INCREASE IN WINDS AND THUNDERSTORM THREAT EACH DAY.  
 
FOLLOW US ON TWITTER AT HTTPS://TWITTER.COM/NWSMISSOULA  
 
IDZ102-103-281015-  
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-  
312 AM PDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....70-80 VALLEYS AND 60-70 RIDGES .  
* MIN HUMIDITY........25-35 PERCENT VALLEYS AND 32-42 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHWEST UP TO 5 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MIN TEMPERATURE.....40-50.  
* MAX HUMIDITY........78-88 PERCENT VALLEYS AND 72-82 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTH UP TO 5 MPH BECOMING SOUTHEAST AFTER  
MIDNIGHT.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....80-85 VALLEYS AND 70-80 RIDGES .  
* MIN HUMIDITY........18-28 PERCENT VALLEYS AND 26-36 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............SOUTH UP TO 5 MPH BECOMING NORTHWEST LATE IN  
THE AFTERNOON.  
* HAINES INDEX........4 LOW.  
* LAL.................1 IN THE PALOUSE/HELLS CANYON...AND 2 IN THE  
CLEARWATER/NEZ PERCE.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 50-60. HIGHS 80-90. DIURNAL TERRAIN  
WINDS TO 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 50-60. HIGHS 80-90. DIURNAL TERRAIN WINDS  
TO 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 50-60. HIGHS 75-85. EAST WINDS 5-10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 50-60. HIGHS 70-80.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80.  
 

 
 
MTZ104-105-281015-  
KOOTENAI-FLATHEAD/GLACIER PARK-  
412 AM MDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....70-80 VALLEYS AND 55-65 RIDGES .  
* MIN HUMIDITY........26-36 PERCENT VALLEYS AND 40-50 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............WEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AND THUNDERSTORMS.  
* MIN TEMPERATURE.....40-50.  
* MAX HUMIDITY........82-92 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS. SLIGHT  
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.....73-83 VALLEYS AND 60-70 RIDGES .  
* MIN HUMIDITY........29-39 PERCENT VALLEYS AND 40-50 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST UP TO 5 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................3.  
* CWR (> 0.10 INCH)...0 PERCENT IN THE KOOTENAI...AND 20 PERCENT IN  
THE FLATHEAD/GLACIER PARK.  
   
MEMORIAL DAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80. EAST WINDS 5-10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 45-55. HIGHS 75-85. DIURNAL TERRAIN WINDS TO  
10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 45-55. HIGHS 75-85. DIURNAL TERRAIN WINDS TO  
10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 65-75.  
 

 
 
MTZ106-108-281015-  
WEST LOLO-EAST LOLO-  
412 AM MDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....70-75 VALLEYS AND 60-70 RIDGES .  
* MIN HUMIDITY........24-34 PERCENT VALLEYS AND 30-40 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AND THUNDERSTORMS.  
* MIN TEMPERATURE.....40-50.  
* MAX HUMIDITY........80-90 PERCENT VALLEYS AND 69-79 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............WEST 5-10 MPH.  
* LAL.................1 IN THE WEST LOLO...AND 2 IN THE EAST LOLO.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....68-78.  
* MIN HUMIDITY........27-37 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............SOUTH UP TO 5 MPH BECOMING NORTH IN THE LATE  
MORNING AND AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 45-55. HIGHS 75-85. DIURNAL TERRAIN  
WINDS TO 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 45-55. HIGHS 75-85. DIURNAL TERRAIN WINDS  
TO 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 50-60. HIGHS 75-85. DIURNAL TERRAIN WINDS TO  
10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 50-60. HIGHS 70-80.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80.  
 

 
 
MTZ107-281015-  
SALISH AND KOOTENAI RESERVATION-  
412 AM MDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....75-80 VALLEYS AND 60-65 RIDGES .  
* MIN HUMIDITY........29-39 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MIN TEMPERATURE.....45-50.  
* MAX HUMIDITY........88-92 PERCENT VALLEYS AND 78-88 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.  
* RIDGE TOP............WEST 5-10 MPH.  
* LAL.................1.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....75-80 VALLEYS AND 65-70 RIDGES .  
* MIN HUMIDITY........26-36 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST UP TO 5 MPH BECOMING NORTHWEST IN THE  
AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85. EAST WINDS  
5-10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 50-60. HIGHS 80-90. EAST WINDS 5-10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 50-60. HIGHS 80-90. EAST WINDS 5-10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 50-60. HIGHS 75-85.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 50-60. HIGHS 70-80.  
 

 
 
MTZ109-281015-  
BITTERROOT-  
412 AM MDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....70-75 VALLEYS AND 60-65 RIDGES .  
* MIN HUMIDITY........21-31 PERCENT VALLEYS AND 27-37 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AND THUNDERSTORMS.  
* MIN TEMPERATURE.....35-45.  
* MAX HUMIDITY........76-86 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.  
* RIDGE TOP............NORTH 5-10 MPH BECOMING NORTHEAST UP TO 5  
MPH AFTER MIDNIGHT, THEN BECOMING SOUTHEAST EARLY IN THE  
MORNING.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE AFTERNOON.  
* MAX TEMPERATURE.....75-80 VALLEYS AND 65-70 RIDGES .  
* MIN HUMIDITY........19-29 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............SOUTH UP TO 5 MPH BECOMING NORTHWEST IN THE  
AFTERNOON.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 40-50. HIGHS 70-80. DIURNAL TERRAIN  
WINDS TO 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 45-55. HIGHS 75-85. DIURNAL TERRAIN WINDS  
TO 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 45-55. HIGHS 75-85. SOUTHEAST WINDS  
5-10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 45-55. HIGHS 65-75.  
 

 
 
MTZ110-111-281015-  
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-  
412 AM MDT SAT MAY 27 2017  
   
TODAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. ISOLATED THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE.....60-70 VALLEYS AND 53-63 RIDGES .  
* MIN HUMIDITY........26-36 PERCENT VALLEYS AND 34-44 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................2.  
* CWR (> 0.10 INCH)...10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
ISOLATED RAIN SHOWERS AND THUNDERSTORMS.  
* MIN TEMPERATURE.....35-45.  
* MAX HUMIDITY........74-84 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHWEST 5-10 MPH EARLY IN THE EVENING  
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTH 5-10 MPH BECOMING SOUTHWEST UP TO 5  
MPH EARLY IN THE MORNING.  
* LAL.................2.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
SUNDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY. SCATTERED RAIN SHOWERS.  
SCATTERED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.....70-75 VALLEYS AND 58-68 RIDGES .  
* MIN HUMIDITY........19-29 PERCENT VALLEYS AND 25-35 PERCENT  
RIDGES .  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN THE  
AFTERNOON.  
* RIDGE TOP............NORTHWEST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................3.  
* CWR (> 0.10 INCH)...10 PERCENT.  
   
MEMORIAL DAY
 
PARTLY CLOUDY WITH ISOLATED RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 40-50. HIGHS 65-75. NORTHEAST WINDS 5-10 MPH.    
TUESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 40-50. HIGHS 70-80. SOUTHEAST WINDS 5-10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 45-55. HIGHS 70-80. SOUTHEAST WINDS 5-10 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS.  
LOWS 45-55. HIGHS 70-80.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. LOWS  
40-50. HIGHS 65-75.  
 

 
 
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