122
FNUS55 KMSO 242109
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
309 PM MDT THU SEP 24 2020
DISCUSSION
IDAHO: THERE WILL BE SOME POST-FRONTAL SHOWERS CONTINUING INTO THIS
EVENING BEFORE SOME CLEARING TAKES PLACE OVERNIGHT. GUSTY WINDS WILL
RETURN AGAIN ON FRIDAY AS AN EVEN STRONGER WEATHER SYSTEM PUSHES OVER
THE REGION. THIS WILL BRING ANOTHER ROUND OF WIDESPREAD PRECIPITATION TO
THE AREA, EVEN MORESO THAN THURSDAY'S COLD FRONT. MOISTURE AND FORCING
ARE MUCH GREATER AND THUS ABUNDANT PRECIPITATION IS EXPECTED. THE
BITTERROOT CREST AND AREAS OF THE CLEARWATER MOUNTAINS WILL SEE OVER AN
INCH WITH SNOW FALLING DOWN TO 7500 FEET. A WARMING AND DRYING TREND
STILL SEEMS LIKELY NEXT WEEK.
MONTANA: SCATTERED SHOWERS AND AN ISOLATED THUNDERSTORM WILL CONTINUE
INTO THIS EVENING. GUSTY WINDS WILL RETURN TO THE REGION ON FRIDAY
AFTERNOON AS AN EVEN STRONGER WEATHER SYSTEM PUSHES OVER THE NORTHERN
ROCKIES. BREEZY CONDITIONS, ESPECIALLY THROUGHOUT THE TERRAIN, WILL
PERSIST EVEN AFTER SUNSET. THE NEXT SYSTEM HAS ABUNDANT MOISTURE AND
VERY FAVORABLE FORCING, THUS HIGHER AND MORE WIDESPREAD PRECIPITATION
AMOUNTS ARE LIKELY, ESPECIALLY ALONG THE BITTERROOT, CABINET AND
MISSION MOUNTAINS. SOUTHWEST MONTANA (INCLUDING THE BEAVERHEAD
DEERLODGE NF) WILL LARGELY MISS OUT ON MOISTURE AND WILL SEE ANOTHER
PERIOD OF DRY AND BREEZY CONDITIONS. A WARMING AND DRYING TREND STILL
SEEMS LIKELY NEXT WEEK.
VIEW FIRE WEATHER BRIEFING VIDEOS ON OUR YOUTUBE CHANNEL
AT HTTPS://WWW.YOUTUBE.COM/NWSMISSOULA
IDZ102-103-252115-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
209 PM PDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 79-89 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH BECOMING SOUTHWEST 5-10 MPH
IN THE LATE EVENING AND EARLY MORNING, THEN BECOMING VARIABLE
LESS THAN 5 MPH LATE IN THE NIGHT.
* RIDGE TOP............WEST 10-20 MPH BECOMING SOUTHWEST 5-10 MPH
AFTER MIDNIGHT.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
RAIN SHOWERS.
* MAX TEMPERATURE.....63-73 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........48-58 PERCENT VALLEYS AND 60-70 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......BECOMING SOUTH 10-15 MPH LATE IN THE
MORNING, THEN BECOMING SOUTHWEST 10-20 MPH IN THE AFTERNOON.
* RIDGE TOP............SOUTHWEST 5-10 MPH INCREASING TO 15-25 MPH
IN THE LATE MORNING AND AFTERNOON.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...60 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........93-100 PERCENT VALLEYS AND 87-97 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...70 PERCENT IN THE PALOUSE/HELLS CANYON...AND
90 PERCENT IN THE CLEARWATER/NEZ PERCE.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY. SNOW
LEVEL 6500 FEET.
* MAX TEMPERATURE.....58-68 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........50-60 PERCENT VALLEYS AND 65-75 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 15-25 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT IN THE PALOUSE/HELLS CANYON...AND
30 PERCENT IN THE CLEARWATER/NEZ PERCE.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS. LOWS 40-50. HIGHS
60-70. WEST WINDS 10-15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75. DIURNAL TERRAIN WINDS
TO 10 MPH.
TUESDAY
CLEAR. LOWS 45-55. HIGHS 70-80. DIURNAL TERRAIN WINDS TO
10 MPH.
WEDNESDAY
CLEAR. LOWS 45-55. HIGHS 70-80.
THURSDAY
CLEAR. LOWS 45-55. HIGHS 75-85.
MTZ104-105-252115-
KOOTENAI-FLATHEAD/GLACIER PARK-
309 PM MDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS. SNOW
LEVEL 7500 FEET.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........88-98 PERCENT VALLEYS AND 77-87 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 15-25 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............SOUTHWEST 20-35 MPH DECREASING TO 10-20 MPH
AFTER MIDNIGHT.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS. SNOW LEVEL 7000
FEET.
* MAX TEMPERATURE.....55-65 VALLEYS AND 40-50 RIDGES.
* MIN HUMIDITY........52-62 PERCENT VALLEYS AND 74-84 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......BECOMING SOUTH 10-20 MPH IN THE LATE MORNING
AND AFTERNOON.
* RIDGE TOP............SOUTHWEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...70 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS. SNOW LEVEL 7000
FEET.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 77-87 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............WEST 20-35 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...80 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SNOW SHOWERS. SNOW LEVEL 6000 FEET.
* MAX TEMPERATURE.....55-65 VALLEYS AND 40-50 RIDGES.
* MIN HUMIDITY........40-50 PERCENT VALLEYS AND 66-76 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND SNOW
SHOWERS. LOWS 35-45. HIGHS 50-60. WEST WINDS 15-25 MPH.
MONDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 60-70. SOUTHWEST WINDS
10-15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75. SOUTHWEST WINDS
10-15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75.
THURSDAY
CLEAR. LOWS 45-55. HIGHS 65-75.
MTZ106-108-252115-
WEST LOLO-EAST LOLO-
309 PM MDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
SNOW LEVEL 7500 FEET.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 74-84 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 15-25 MPH BECOMING SOUTHWEST 5-10 MPH
AFTER MIDNIGHT.
* RIDGE TOP............WEST 15-25 MPH BECOMING SOUTHWEST 5-15 MPH
AFTER MIDNIGHT.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS. SNOW LEVEL 7500
FEET.
* MAX TEMPERATURE.....48-58.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 53-63 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-15 MPH 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)...50 PERCENT IN THE WEST LOLO...AND 20 PERCENT
IN THE EAST LOLO.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........90-100 PERCENT VALLEYS AND 83-93 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 20-30 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...70 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE
MORNING. CHANCE OF RAIN SHOWERS. SNOW LEVEL 6500 FEET.
* MAX TEMPERATURE.....50-60 VALLEYS AND 43-53 RIDGES.
* MIN HUMIDITY........43-53 PERCENT VALLEYS AND 60-70 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 15-25 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE
OF RAIN SHOWERS. LOWS 35-45. HIGHS 55-65. WEST WINDS 10-20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75. SOUTHWEST WINDS
10-15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 65-75. WEST WINDS 5-10 MPH.
WEDNESDAY
CLEAR. LOWS 45-55. HIGHS 65-75.
THURSDAY
CLEAR. LOWS 45-55. HIGHS 70-80.
MTZ107-252115-
SALISH AND KOOTENAI RESERVATION-
309 PM MDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
SNOW LEVEL 7500 FEET.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........72-82 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH BECOMING SOUTH 5-10 MPH
AFTER MIDNIGHT.
* RIDGE TOP............WEST 20-30 MPH DECREASING TO 10-20 MPH AFTER
MIDNIGHT.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS. SNOW LEVEL 7500
FEET.
* MAX TEMPERATURE.....60-65 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........55-65 PERCENT VALLEYS AND 73-83 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......BECOMING SOUTHWEST 10-20 MPH IN THE LATE
MORNING AND AFTERNOON.
* RIDGE TOP............SOUTHWEST 10-15 MPH INCREASING TO 20-30 MPH
IN THE LATE MORNING AND AFTERNOON.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...20 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS. SNOW LEVEL 7500
FEET.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........89-99 PERCENT VALLEYS AND 100 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-10 MPH INCREASING TO 10-20 MPH
IN THE LATE EVENING AND OVERNIGHT.
* RIDGE TOP............WEST 20-30 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...60 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY. SNOW
LEVEL 6000 FEET.
* MAX TEMPERATURE.....55-60 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........52-62 PERCENT VALLEYS AND 72-82 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-15 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS. LOWS 40-50.
HIGHS 55-65. SOUTHWEST WINDS 10-20 MPH.
MONDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. SOUTHWEST WINDS
5-10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80. SOUTHWEST WINDS
5-10 MPH.
WEDNESDAY
CLEAR. LOWS 45-55. HIGHS 70-80.
THURSDAY
CLEAR. LOWS 45-55. HIGHS 70-80.
MTZ109-252115-
BITTERROOT-
309 PM MDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF RAIN SHOWERS.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........85-95 PERCENT VALLEYS AND 72-82 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............SOUTHWEST 10-20 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-55 RIDGES.
* MIN HUMIDITY........40-50 PERCENT VALLEYS AND 53-63 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-15 MPH BECOMING SOUTHWEST 10-20 MPH
IN THE AFTERNOON.
* RIDGE TOP............SOUTHWEST 5-10 MPH INCREASING TO 20-30 MPH
IN THE LATE MORNING AND AFTERNOON.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...20 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........CLOUDY. RAIN SHOWERS.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........88-98 PERCENT VALLEYS AND 81-91 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...90 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS AND SNOW SHOWERS
LIKELY. SNOW LEVEL 7000 FEET.
* MAX TEMPERATURE.....55-60 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........41-51 PERCENT VALLEYS AND 55-65 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.
LOWS 35-45. HIGHS 50-60. WEST WINDS 10-20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 60-70. SOUTHWEST WINDS
5-10 MPH.
TUESDAY
CLEAR. LOWS 45-55. HIGHS 65-75. WEST WINDS 5-10 MPH.
WEDNESDAY
CLEAR. LOWS 40-50. HIGHS 65-75.
THURSDAY
CLEAR. LOWS 45-55. HIGHS 65-75.
MTZ110-111-252115-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
309 PM MDT THU SEP 24 2020
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SLIGHT
CHANCE OF RAIN SHOWERS.
* MIN TEMPERATURE.....28-38 VALLEYS AND 35-40 RIDGES.
* MAX HUMIDITY........84-94 PERCENT VALLEYS AND 64-74 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH BECOMING VARIABLE LESS THAN 5
MPH AFTER MIDNIGHT.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 5-15 MPH AFTER
MIDNIGHT.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....60-70 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........29-39 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......BECOMING SOUTHWEST 15-25 MPH IN THE LATE
MORNING AND AFTERNOON.
* RIDGE TOP............SOUTHWEST 10-20 MPH INCREASING TO 20-30 MPH
IN THE AFTERNOON.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........83-93 PERCENT VALLEYS AND 68-78 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 15-25 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* LAL.................1.
* CWR (> 0.10 INCH)...60 PERCENT IN THE DEERLODGE/WEST
BEAVERHEAD...AND 20 PERCENT IN THE EAST BEAVERHEAD.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SNOW SHOWERS. SNOW LEVEL 7500 FEET.
* MAX TEMPERATURE.....50-60 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........29-39 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 15-25 MPH.
* RIDGE TOP............WEST 20-30 MPH.
* HAINES INDEX........2 VERY LOW.
* LAL.................1.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND SNOW
SHOWERS. LOWS 30-40. HIGHS 55-65. WEST WINDS 10-20 MPH.
MONDAY
MOSTLY CLEAR. LOWS 35-45. HIGHS 65-75. WEST WINDS 5-15 MPH.
TUESDAY
CLEAR. LOWS 40-50. HIGHS 65-75. WEST WINDS 10-15 MPH.
WEDNESDAY
CLEAR. LOWS 40-50. HIGHS 65-75.
THURSDAY
CLEAR. LOWS 40-50. HIGHS 65-75.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page