109
FNUS55 KMSO 082201
FWFMSO

Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
301 PM MST Mon Dec 8 2025


.DISCUSSION...

Idaho (Zones 102 and 103): Significant Atmospheric River,
potentially historic, to bring heavy rain, leading to hydrological
concerns and flood risk. Taking a quick look at the next 48 hours...
Tonight`s weather, snow likely. Rain likely. Snow may be heavy at
times. Tuesday, rain and snow likely in the day, then a chance of
rain and snow in the afternoon. Snow may be heavy at times in the
day. Snow level 5500 feet. Tuesday Night, snow likely. Rain likely.
Snow level 5500 feet. Wednesday, rain likely. Slight chance of snow
in the afternoon.


Northwest MT (Zones 104 and 105): Significant Atmospheric River,
potentially historic, to bring heavy rain, leading to hydrological
concerns and flood risk. Taking a quick look at the next 48 hours...
Tonight`s weather, rain and snow likely. Blowing snow. Snow may be
heavy at times. Visibility one quarter mile or less at times.
Tuesday, mostly cloudy. A 50 percent chance of rain and snow in the
day. Patchy blowing snow in the day. Visibility one quarter mile or
less at times in the day. Tuesday Night, a chance of snow until
midnight, then snow likely after midnight. Snow may be heavy at times
after midnight. Wednesday, rain and snow likely.


West Central MT (Zones 106, 107 and 108): Significant Atmospheric
River, potentially historic, to bring heavy rain, leading to
hydrological concerns and flood risk. Taking a quick look at the next
48 hours... Tonight`s weather, rain likely. Snow likely. Blowing
snow. Snow may be heavy at times after midnight. Visibility one
quarter mile or less at times. Tuesday, rain likely and a slight
chance of snow in the day, then slight chance of rain and snow in the
afternoon. Blowing snow in the day. Snow may be heavy at times in the
day. Visibility one quarter mile or less at times in the day.
Tuesday Night, a chance of rain and snow until midnight, then rain
and snow likely after midnight. Patchy dense fog after midnight.
Wednesday, rain likely. Snow likely in the day, then slight chance of
snow in the afternoon.


Southwest MT (Zones 109, 110 and 111): Significant Atmospheric
River, potentially historic, to bring heavy rain, leading to
hydrological concerns and flood risk. Taking a quick look at the next
48 hours... Tonight`s weather, mostly cloudy with a slight chance of
snow. Areas of rain. Patchy blowing snow. Visibility one quarter mile
or less at times. Tuesday, a chance of rain. Snow likely in the day,
then a chance of snow in the afternoon. Patchy blowing snow in the
day. Visibility one quarter mile or less at times in the day.
Tuesday Night, a chance of snow until midnight, then snow likely
after midnight. Wednesday, rain and snow likely in the day, then a
chance of rain and a slight chance of snow in the afternoon.


IDZ102-103-091100-
Palouse/Hells Canyon-Clearwater/Nez Perce-
201 PM PST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Rain and snow. Snow level 7500 feet.
* Min Temperature.....40-45 valleys and 30-40 ridges.
* Max Humidity........84-94 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 20-30 mph.
*     Ridge Top............Southwest 25-35 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.TUESDAY...
* Sky/Weather.........Mostly cloudy. Rain and snow. Snow level 5500
  feet.
* Max Temperature.....45-55 valleys and 35-45 ridges.
* Min Humidity........79-89 percent valleys and 88-98 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 5-15 mph.
*     Ridge Top............West 15-25 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....West 25 mph until 1300, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.TUESDAY NIGHT...
* Sky/Weather.........Rain and snow. Snow level 5500 feet.
* Min Temperature.....35-45 valleys and 30-35 ridges.
* Max Humidity........88-98 percent valleys and 95-100 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......South 5-15 mph.
*     Ridge Top............South 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.WEDNESDAY...
* Sky/Weather.........Rain. Slight chance of snow in the afternoon.
* Max Temperature.....50-60 valleys and 40-50 ridges.
* Min Humidity........75-85 percent valleys and 84-94 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 10-20 mph.
*     Ridge Top............Southwest 10-20 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.THURSDAY...Cloudy with rain and slight chance of snow. Chance of
precipitation 90 percent. Lows 40-50. Highs 45-55. Min humidities
70-80 percent. Southwest winds 10-20 mph.
.FRIDAY...Mostly cloudy with chance of rain and slight chance of snow.
Chance of precipitation 40 percent. Lows 40-50. Highs 45-55. Min
humidities 60-70 percent. Southwest winds 5-10 mph.
.SATURDAY...Mostly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 45-55. Southwest winds 10-15 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 50 percent. Lows 35-45. Highs 40-50.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 40 percent. Lows 35-45. Highs 45-55.

$$

MTZ104-105-091100-
Kootenai-Flathead/Glacier Park-
301 PM MST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Blowing snow. Rain and snow. Snow level 6500
  feet.
* Min Temperature.....25-35.
* Max Humidity........93-100 percent valleys and 84-94 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 30-40 mph.
*     Ridge Top............Southwest 35-45 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 25 mph until 0100, then west 30
  mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.TUESDAY...
* Sky/Weather.........Mostly cloudy. Patchy blowing snow in the
  morning. Chance of rain and snow. Snow level 4000 feet.
* Max Temperature.....45-50 valleys and 30-40 ridges.
* Min Humidity........66-76 percent.
* 20-Foot Winds.......
*     Lower Elevation......West 5-15 mph.
*     Ridge Top............West 35-45 mph decreasing to 25-35 mph in
      the afternoon.
* Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until
  1600, then 2 kft agl.
* Transport Winds.....West 30 mph until 1500, then 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...30 percent in the Kootenai...and 60 percent
  in the Flathead/Glacier Park.

.TUESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Snow.
* Min Temperature.....25-35.
* Max Humidity........94-100 percent valleys and 84-94 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph.
*     Ridge Top............Southwest 10-20 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 15 mph until 0200, then south 15
  mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.WEDNESDAY...
* Sky/Weather.........Rain and snow. Snow level 6000 feet.
* Max Temperature.....45-50 valleys and 35-40 ridges.
* Min Humidity........76-86 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 15-25 mph.
*     Ridge Top............Southwest 15-25 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph until 1000, then west 30 mph
  until 1600, then 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.THURSDAY...Cloudy with rain and slight chance of snow. Chance of
precipitation 80 percent. Lows 35-45. Highs 35-45. Min humidities
70-80 percent. Southwest winds 15-25 mph.
.FRIDAY...Mostly cloudy with snow likely and chance of rain. Chance of
precipitation 60 percent. Lows 25-35. Highs 35-45. Min humidities
70-80 percent. Southwest winds 10-15 mph.
.SATURDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 40 percent. Lows 30-40. Highs 35-45. Southwest winds
10-15 mph.
.SUNDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 40 percent. Lows 30-40. Highs 35-45.
.MONDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 50 percent. Lows 30-40. Highs 35-45.

$$

MTZ106-108-091100-
West Lolo-East Lolo-
301 PM MST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Areas of blowing snow in the evening. Blowing
  snow after midnight. Rain and snow. Snow level 6500 feet.
* Min Temperature.....30-40.
* Max Humidity........83-93 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 25-35 mph.
*     Ridge Top............Southwest 35-45 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph until 2300, then 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.TUESDAY...
* Sky/Weather.........Mostly cloudy. Blowing snow in the morning.
  Rain and chance of snow. Snow level 5000 feet.
* Max Temperature.....35-45.
* Min Humidity........65-75 percent valleys and 75-85 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 10-20 mph.
*     Ridge Top............West 35-45 mph decreasing to 25-35 mph in
      the afternoon.
* Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until
  1600, then 2 kft agl.
* Transport Winds.....West 30 mph until 1500, then 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...70 percent in the West Lolo...and 90 percent
  in the East Lolo.

.TUESDAY NIGHT...
* Sky/Weather.........Snow and rain. Patchy dense fog after
  midnight. Snow level 4000 feet.
* Min Temperature.....25-35.
* Max Humidity........86-96 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 5-10 mph becoming variable less
      than 5 mph after midnight.
*     Ridge Top............Southwest 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 10 mph until 2300, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.WEDNESDAY...
* Sky/Weather.........Rain and snow. Snow level 7500 feet.
* Max Temperature.....40-50.
* Min Humidity........77-87 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 10-20 mph.
*     Ridge Top............Southwest 15-25 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph until 1100, then west 25
  mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.THURSDAY...Cloudy with rain and slight chance of snow. Chance of
precipitation 90 percent. Lows 40-50. Highs 40-50. Min humidities
75-85 percent. West winds 10-20 mph.
.FRIDAY...Mostly cloudy with rain likely and slight chance of snow.
Chance of precipitation 60 percent. Lows 35-45. Highs 40-50. Min
humidities 65-75 percent. Southwest winds 10-15 mph.
.SATURDAY...Mostly cloudy with slight chance of rain and snow. Chance
of precipitation 20 percent. Lows 35-45. Highs 40-50. Southwest winds
10-15 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 50 percent. Lows 30-40. Highs 40-50.
.MONDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 40 percent. Lows 30-40. Highs 40-50.

$$

MTZ107-091100-
Flathead Reservation-
301 PM MST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Snow in the evening. Rain. Snow level 6500
  feet.
* Min Temperature.....35-40 valleys and 25-30 ridges.
* Max Humidity........85-95 percent valleys and 99 percent ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 20-30 mph.
*     Ridge Top............Southwest 35-45 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph until 0200, then 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.TUESDAY...
* Sky/Weather.........Mostly cloudy. Chance of rain. Slight chance
  of snow in the afternoon. Snow level 4500 feet.
* Max Temperature.....45-50 valleys and 30-35 ridges.
* Min Humidity........58-68 percent valleys and 79-89 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 20-30 mph.
*     Ridge Top............West 35-45 mph decreasing to 25-35 mph in
      the afternoon.
* Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until
  1600, then 1-2 kft agl.
* Transport Winds.....West 25 mph until 1500, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...40 percent in areas west of Highway 93...and
  80 percent in the Mission Mtns and areas east of Highway 93.

.TUESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Snow and rain. Snow level 3500
  feet.
* Min Temperature.....30-35.
* Max Humidity........87-97 percent.
* 20-Foot Winds.......
*     Lower Elevation......South 10-15 mph.
*     Ridge Top............South 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....South 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.WEDNESDAY...
* Sky/Weather.........Slight chance of snow in the morning. Rain.
  Snow level 7000 feet.
* Max Temperature.....50-55 valleys and 30-35 ridges.
* Min Humidity........77-87 percent valleys and 93 percent ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 10-20 mph.
*     Ridge Top............Southwest 15-25 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph until 1300. West 15 mph
  after 1600.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.THURSDAY...Cloudy with rain and slight chance of snow. Chance of
precipitation 90 percent. Lows 40-50. Highs 45-55. Min humidities
70-80 percent. Southwest winds 10-20 mph.
.FRIDAY...Cloudy with rain likely and slight chance of snow. Chance of
precipitation 60 percent. Lows 35-45. Highs 40-50. Min humidities
70-80 percent. Southwest winds 5-10 mph.
.SATURDAY...Mostly cloudy with chance of snow and slight chance of
rain. Chance of precipitation 30 percent. Lows 35-45. Highs 45-55.
Southwest winds 5-15 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 50 percent. Lows 35-45. Highs 40-50.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 40 percent. Lows 35-45. Highs 40-50.

$$

MTZ109-091100-
Bitterroot-
301 PM MST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Rain and snow. Snow level 7000 feet.
* Min Temperature.....30-40.
* Max Humidity........84-94 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 25-35 mph.
*     Ridge Top............Southwest 35-45 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.TUESDAY...
* Sky/Weather.........Rain and snow. Snow level 6000 feet.
* Max Temperature.....45-50 valleys and 35-40 ridges.
* Min Humidity........67-77 percent valleys and 81-91 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 25-35 mph.
*     Ridge Top............West 35-45 mph decreasing to 25-35 mph in
      the afternoon.
* Mixing Height.......1-2 kft agl until 1200, then 2 kft agl.
* Transport Winds.....West 25 mph until 1500, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.TUESDAY NIGHT...
* Sky/Weather.........Snow and rain. Snow level 5000 feet.
* Min Temperature.....25-35.
* Max Humidity........84-94 percent.
* 20-Foot Winds.......
*     Lower Elevation......South 5-15 mph.
*     Ridge Top............Southwest 5-15 mph increasing to 15-25 mph
      after midnight.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.WEDNESDAY...
* Sky/Weather.........Rain and slight chance of snow.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........75-85 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 15-25 mph.
*     Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.THURSDAY...Cloudy with rain and slight chance of snow. Chance of
precipitation 80 percent. Lows 35-45. Highs 40-50. Min humidities
70-80 percent. Southwest winds 15-25 mph.
.FRIDAY...Mostly cloudy with chance of rain and slight chance of snow.
Chance of precipitation 50 percent. Lows 35-45. Highs 40-50. Min
humidities 55-65 percent. Southwest winds 10-20 mph.
.SATURDAY...Partly cloudy. Lows 30-40. Highs 40-50. Southwest winds
10-20 mph.
.SUNDAY...Partly cloudy with chance of snow and rain. Chance of
precipitation 40 percent. Lows 30-40. Highs 40-50.
.MONDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 30 percent. Lows 30-40. Highs 40-50.

$$

MTZ110-111-091100-
Deerlodge/West Beaverhead-East Beaverhead-
301 PM MST Mon Dec 8 2025

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Patchy blowing snow. Chance of
  rain and slight chance of snow. Snow level 7000 feet.
* Min Temperature.....25-35.
* Max Humidity........75-85 percent.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 25-35 mph.
*     Ridge Top............Southwest 30-40 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....0 percent in the Deerlodge/West
  Beaverhead...and near 0 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...60 percent in the Deerlodge/West
  Beaverhead...and 10 percent in the East Beaverhead.

.TUESDAY...
* Sky/Weather.........Partly cloudy. Patchy blowing snow in the
  morning. Chance of rain and snow. Snow level 6500 feet.
* Max Temperature.....40-50 valleys and 35-40 ridges.
* Min Humidity........56-66 percent valleys and 69-79 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 25-35 mph.
*     Ridge Top............West 30-40 mph decreasing to 20-30 mph in
      the afternoon.
* Mixing Height.......Below 500 ft to 1 kft agl until 1000, then 3
  kft agl until 1600, then 2 kft agl.
* Transport Winds.....West 30 mph until 1200, then 35 mph until
  1500, then 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent in the Deerlodge/West
  Beaverhead...and 10 percent in the East Beaverhead.

.TUESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Snow.
* Min Temperature.....25-35.
* Max Humidity........86-96 percent valleys and 79-89 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 10-20 mph.
*     Ridge Top............Southwest 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent in the Deerlodge/West
  Beaverhead...and 30 percent in the East Beaverhead.

.WEDNESDAY...
* Sky/Weather.........Mostly cloudy. Rain and snow.
* Max Temperature.....45-55 valleys and 35-40 ridges.
* Min Humidity........63-73 percent valleys and 70-80 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 20-30 mph.
*     Ridge Top............Southwest 20-30 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 1200, then 2
  kft agl.
* Transport Winds.....West 20 mph until 1000, then 30 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent in the Deerlodge/West
  Beaverhead...and 20 percent in the East Beaverhead.

.THURSDAY...Mostly cloudy with chance of rain and slight chance of
snow. Chance of precipitation 40 percent. Lows 35-45. Highs 40-50. Min
humidities 55-65 percent. Southwest winds 15-25 mph.
.FRIDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 40-50. Min humidities
45-55 percent. Southwest winds 10-20 mph.
.SATURDAY...Partly cloudy. Lows 30-40. Highs 40-50. Southwest winds
10-20 mph.
.SUNDAY...Partly cloudy with slight chance of snow. Chance of snow
20 percent. Lows 30-40. Highs 40-50.
.MONDAY...Mostly cloudy with slight chance of snow. Chance of snow
20 percent. Lows 25-35. Highs 40-50.

$$