193  
FNUS55 KMSO 171005  
FWFMSO  
 
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO  
NATIONAL WEATHER SERVICE MISSOULA MT  
405 AM MDT WED AUG 17 2022  
 
   
DISCUSSION
 
 
IDAHO: A STRONG HIGH PRESSURE RIDGE RESULTING IN HOT TEMPERATURES AND A  
VERY DRY AIR MASS WILL CONTINUE THROUGH THIS WEEKEND. STRONG INVERSIONS  
AND THERMAL BELTS WILL RESULT IN POOR RH RECOVERIES THIS WEEK. A FEW  
SHOWERS AND THUNDERSTORMS ARE EXPECTED IN THE SOUTHERN CLEARWATERS  
FRIDAY THROUGH SUNDAY EVENING.  
 
MONTANA: A STRONG HIGH PRESSURE RIDGE RESULTING IN HOT TEMPERATURES AND A  
VERY DRY AIR MASS WILL CONTINUE THROUGH THIS WEEKEND. STRONG INVERSIONS  
AND THERMAL BELTS WILL RESULT IN POOR RH RECOVERIES THIS WEEK. A LIGHT  
SURGE OF MONSOON MOISTURE WILL TRIGGER A FEW SHOWERS AND THUNDERSTORMS  
IN THE BEAVERHEAD DEERLODGE AND SOUTHERN BITTERROOTS FRIDAY THROUGH  
SUNDAY.  
 
IDZ102-103-181015-  
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-  
305 AM PDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....95-105 VALLEYS AND 85-90 RIDGES.  
* MIN HUMIDITY........8-18 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......UPSLOPE/UPVALLEY 4-8 MPH IN THE AFTERNOON.  
* RIDGE TOP............NORTH 5-10 MPH IN THE AFTERNOON.  
* HAINES INDEX........5 MODERATE.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....55-65.  
* MAX HUMIDITY........43-53 PERCENT VALLEYS AND 37-47 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......EAST 5-10 MPH.  
* RIDGE TOP............EAST 5-10 MPH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....95-105 VALLEYS AND 85-90 RIDGES.  
* MIN HUMIDITY........10-20 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......UPSLOPE/UPVALLEY 4-8 MPH LATE IN THE  
AFTERNOON.  
* RIDGE TOP............EAST 5-10 MPH BECOMING NORTH LATE IN THE  
AFTERNOON.  
* HAINES INDEX........6 HIGH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY. LOWS 65-75. HIGHS 85-95. MIN HUMIDITIES  
20-30 PERCENT. NORTHEAST WINDS 5-10 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES  
25-35 PERCENT. SOUTHEAST WINDS 5-10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 90-100. SOUTHEAST WINDS  
5-10 MPH.    
MONDAY
 
NOT AS WARM. PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.  
LOWS 60-70. HIGHS 80-90.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 55-65. HIGHS 80-90.  
 

 
 
MTZ104-105-181015-  
KOOTENAI-FLATHEAD/GLACIER PARK-  
405 AM MDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....90-100 VALLEYS AND 73-83 RIDGES.  
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 24-34 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....50-60.  
* MAX HUMIDITY........76-86 PERCENT VALLEYS AND 54-64 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 10-15 MPH IN THE EVENING BECOMING  
DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............EAST 10-15 MPH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....93-103 VALLEYS AND 78-88 RIDGES.  
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 24-34 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST 5-10 MPH.  
* HAINES INDEX........3 VERY LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES  
25-35 PERCENT. EAST WINDS 10-15 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES  
25-35 PERCENT. SOUTHEAST WINDS 5-10 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 60-70. HIGHS 85-95. SOUTHWEST WINDS  
5-10 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 55-65. HIGHS 75-85.  
 

 
 
MTZ106-108-181015-  
WEST LOLO-EAST LOLO-  
405 AM MDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....88-98 VALLEYS AND 80-90 RIDGES.  
* MIN HUMIDITY........11-21 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* HAINES INDEX........4 LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....48-58 VALLEYS AND 55-65 RIDGES.  
* MAX HUMIDITY........58-68 PERCENT VALLEYS AND 45-55 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 5-10 MPH.  
* RIDGE TOP............EAST 10-15 MPH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....90-100 VALLEYS AND 83-93 RIDGES.  
* MIN HUMIDITY........10-20 PERCENT VALLEYS AND 16-26 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST 5-10 MPH.  
* HAINES INDEX........4 LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES  
20-30 PERCENT. EAST WINDS 5-10 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES  
25-35 PERCENT. SOUTH WINDS 5-10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. SOUTHWEST WINDS  
5-10 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 55-65. HIGHS 75-85.  
 

 
 
MTZ107-181015-  
FLATHEAD RESERVATION-  
405 AM MDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....95-100 VALLEYS AND 75-80 RIDGES.  
* MIN HUMIDITY........11-21 PERCENT VALLEYS AND 17-27 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* HAINES INDEX........4 LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....55-65.  
* MAX HUMIDITY........60-70 PERCENT VALLEYS AND 53-63 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 10-15 MPH IN THE EVENING BECOMING  
DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTH 5-10 MPH BECOMING EAST 5-15 MPH IN THE  
LATE EVENING AND OVERNIGHT.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....95-100 VALLEYS AND 75-80 RIDGES.  
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 21-31 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST 5-15 MPH EARLY IN THE MORNING.  
* HAINES INDEX........4 LOW.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY. LOWS 60-70. HIGHS 90-100. MIN HUMIDITIES  
20-30 PERCENT. NORTHEAST WINDS 5-10 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 65-75. HIGHS 90-100. MIN HUMIDITIES  
20-30 PERCENT. SOUTHEAST WINDS 5-10 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 60-70. HIGHS 90-100. SOUTHWEST WINDS  
5-10 MPH.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS 60-70. HIGHS  
85-95.    
TUESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90.  
 

 
 
MTZ109-181015-  
BITTERROOT-  
405 AM MDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* MAX TEMPERATURE.....95-100 VALLEYS AND 80-85 RIDGES.  
* MIN HUMIDITY........9-16 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......UPSLOPE/UPVALLEY 4-8 MPH LATE IN THE  
AFTERNOON.  
* RIDGE TOP............EAST UP TO 5 MPH BECOMING NORTH 5-10 MPH IN  
THE AFTERNOON.  
* HAINES INDEX........5 MODERATE.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....50-60.  
* MAX HUMIDITY........55-65 PERCENT VALLEYS AND 40-50 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTH 5-10 MPH EARLY IN THE EVENING BECOMING  
DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....95-100 VALLEYS AND 80-85 RIDGES.  
* MIN HUMIDITY........13-18 PERCENT VALLEYS AND 14-24 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............EAST 5-10 MPH EARLY IN THE MORNING BECOMING  
NORTH LATE IN THE AFTERNOON.  
* HAINES INDEX........5 MODERATE.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES 30-40 PERCENT.  
NORTHEAST WINDS 5-10 MPH.    
SATURDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90. MIN HUMIDITIES 25-35 PERCENT.  
SOUTH WINDS 5-10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90. SOUTHWEST WINDS 5-10 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 60-70. HIGHS 80-90.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 55-65. HIGHS 75-85.  
 

 
 
MTZ110-111-181015-  
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-  
405 AM MDT WED AUG 17 2022  
   
TODAY
 
 
* SKY/WEATHER.........MOSTLY SUNNY. HAZE AND AREAS OF SMOKE.  
* MAX TEMPERATURE.....85-95 VALLEYS AND 75-85 RIDGES.  
* MIN HUMIDITY........7-14 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTH 10-15 MPH.  
* RIDGE TOP............NORTHEAST 10-15 MPH BECOMING NORTH 5-10 MPH  
IN THE AFTERNOON.  
* HAINES INDEX........5 MODERATE.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* MIN TEMPERATURE.....40-50 VALLEYS AND 50-55 RIDGES.  
* MAX HUMIDITY........63-73 PERCENT VALLEYS AND 40-50 PERCENT  
RIDGES.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......NORTHEAST 5-15 MPH UNTIL EARLY MORNING  
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.  
* RIDGE TOP............NORTHEAST 5-15 MPH.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
THURSDAY
 
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* MAX TEMPERATURE.....85-90 VALLEYS AND 75-85 RIDGES.  
* MIN HUMIDITY........10-19 PERCENT.  
* 20-FOOT WINDS.......  
* LOWER ELEVATION......VARIABLE LESS THAN 7 MPH.  
* RIDGE TOP............NORTHEAST 5-10 MPH.  
* HAINES INDEX........5 MODERATE.  
* LAL.................1.  
* CHANCE LIGHTNING....0 PERCENT.  
* CWR (> 0.10 INCH)...0 PERCENT.  
   
FRIDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 55-65. HIGHS 80-90. MIN HUMIDITIES 20-30 PERCENT.  
EAST WINDS 10-15 MPH.    
SATURDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND  
THUNDERSTORMS. LOWS 55-65. HIGHS 80-90. MIN HUMIDITIES 25-35 PERCENT.  
SOUTHEAST WINDS 5-10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS 55-65. HIGHS 80-90. SOUTHWEST WINDS 5-10 MPH.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 55-65. HIGHS 75-85.    
TUESDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 50-60. HIGHS 70-80.  
 

 
 
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