Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
296
FNUS55 KMSO 200926
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
326 AM MDT Sun Apr 20 2025
.DISCUSSION...
Idaho (Zones 102 and 103): A moist westerly flow pattern will keep
scattered showers in the forecast this afternoon and evening, along with
breezy westerly wind gusts around 20 mph. The active pattern will
persist into Monday, with a resurgence of moisture and cold air. Snow-
levels will lower to around 4000 feet by Monday morning. The active
pattern will continue through much of the week, with Thursday being the
warmest and driest day of the week. MinRH values will vary between 25-35
percent.
Northwest MT (Zones 104 and 105): A moist westerly flow pattern will keep
scattered showers in the forecast this afternoon and evening, along with
breezy westerly wind gusts around 25 mph. The active pattern will
persist into Monday, with a resurgence of moisture and cold air. Snow-
levels will lower to around 4000 feet by Monday morning. The active
pattern will continue through much of the week, with Thursday being the
warmest and driest day of the week. MinRH values will vary between 20-30
percent in the valleys and 40 to 50 percent in the mountains.
West Central MT (Zones 106, 107 and 108): A moist westerly flow pattern
will keep scattered showers in the forecast this afternoon and evening,
along with breezy westerly wind gusts around 25 mph. The active pattern
will persist into Monday, with a resurgence of moisture and cold air.
Snow- levels will lower to around 4000 feet by Monday morning. The
active pattern will continue through much of the week, with Thursday
being the warmest and driest day of the week. MinRH values will vary
between 20-30 percent in the valleys and 40 to 50 percent in the
mountains.
Southwest MT (Zones 109, 110 and 111): A moist westerly flow pattern will keep
scattered showers in the forecast this afternoon and evening, along with
breezy westerly wind gusts around 25 mph. The active pattern will
persist into Monday, with a resurgence of moisture and cold air. Snow-
levels will lower to around 4000 feet by Monday morning. The active
pattern will continue through much of the week, with Thursday being the
warmest and driest day of the week. MinRH values will vary between 20-30
percent.
View Weather Briefing videos on our YouTube channel
at https://www.youtube.com/NWSMissoula
IDZ102-103-210930-
Palouse/Hells Canyon-Clearwater/Nez Perce-
226 AM PDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Chance of rain and snow
likely. Snow level 5500 feet.
* Max Temperature.....55-65 valleys and 40-50 ridges.
* Min Humidity........41-51 percent valleys and 53-63 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 5-15 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 0900. 6 kft
agl after 1400.
* Transport Winds.....West 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Rain and snow. Snow level 5000
feet.
* Min Temperature.....30-40.
* Max Humidity........78-88 percent valleys and 86-96 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 10-15 mph.
* Ridge Top............West 10-15 mph.
* Mixing Height.......5 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....West 10 mph.
* Chance Lightning....Near 0 percent in the Palouse/Hells
Canyon...and 15 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...20 percent in the Palouse/Hells Canyon...and
80 percent in the Clearwater/Nez Perce.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Snow showers, rain showers and
slight chance of thunderstorms. Snow level 4000 feet.
* Max Temperature.....48-58 valleys and 35-45 ridges.
* Min Humidity........41-51 percent valleys and 53-63 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 10-20 mph.
* Ridge Top............West 10-20 mph.
* Mixing Height.......3 kft agl until 0900. 7 kft agl after 1300.
* Transport Winds.....West 20 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent in the Palouse/Hells Canyon...and
60 percent in the Clearwater/Nez Perce.
.TUESDAY...Partly cloudy. Lows 30-40. Highs 50-60. Min humidities
25-35 percent. West winds 10-15 mph.
.WEDNESDAY...Mostly clear. Lows 30-40. Highs 55-65. Min humidities
20-30 percent. Northwest winds 5-10 mph.
.THURSDAY...Mostly clear. Lows 35-45. Highs 60-70. East winds 5-10 mph.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 40-50. Highs 60-70.
.SATURDAY...Cooler. Mostly cloudy with chance of rain showers and snow
likely. Chance of precipitation 60 percent. Lows 35-45. Highs 50-60.
$$
MTZ104-105-210930-
Kootenai-Flathead/Glacier Park-
326 AM MDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Chance of rain and chance of
snow. Snow level 5500 feet.
* Max Temperature.....55-60 valleys and 35-45 ridges.
* Min Humidity........38-48 percent valleys and 62-72 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 10-20 mph.
* Ridge Top............Southwest 10-20 mph.
* Mixing Height.......1-2 kft agl until 0900. 6 kft agl after 1300.
* Transport Winds.....Southwest 15 mph until 1400, then west 20
mph.
* Chance Lightning....Near 0 percent in the Kootenai...and 20
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...10 percent in the Kootenai...and 30 percent
in the Flathead/Glacier Park.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Snow and rain likely. Snow
level 5000 feet.
* Min Temperature.....25-35.
* Max Humidity........87-97 percent valleys and 80-90 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............West 10-20 mph.
* Mixing Height.......5 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Southwest 15 mph.
* Chance Lightning....Near 0 percent in the Kootenai...and 20
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...30 percent in the Kootenai...and 50 percent
in the Flathead/Glacier Park.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Snow and rain likely in the
morning, then snow showers, rain showers and slight chance of
thunderstorms in the afternoon. Snow level 4000 feet.
* Max Temperature.....50-55 valleys and 33-43 ridges.
* Min Humidity........43-53 percent valleys and 66-76 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 10-20 mph.
* Ridge Top............Southwest 15-25 mph.
* Mixing Height.......3 kft agl until 0900. 6 kft agl after 1300.
* Transport Winds.....West 20 mph until 1400, then 25 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...30 percent in the Kootenai...and 60 percent
in the Flathead/Glacier Park.
.TUESDAY...Partly cloudy with chance of snow and slight chance of rain.
Chance of precipitation 30 percent. Lows 25-35. Highs 45-55. Min
humidities 25-35 percent. West winds 10-20 mph.
.WEDNESDAY...Partly cloudy with slight chance of rain and snow. Chance
of precipitation 20 percent. Lows 30-40. Highs 50-60. Min humidities
25-35 percent. Southwest winds 10-15 mph.
.THURSDAY...Mostly clear. Lows 30-40. Highs 55-65. Northeast winds
10-15 mph.
.FRIDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 55-65.
.SATURDAY...Cooler. Mostly cloudy with chance of rain and snow. Chance
of precipitation 40 percent. Lows 35-45. Highs 45-55.
$$
MTZ106-108-210930-
West Lolo-East Lolo-
326 AM MDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. and chance of snow. Snow level
5500 feet.
* Max Temperature.....43-53.
* Min Humidity........38-48 percent valleys and 48-58 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 10-20 mph.
* Mixing Height.......1-2 kft agl until 0900. 7 kft agl after 1300.
* Transport Winds.....West 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Snow and rain likely. Snow
level 5000 feet.
* Min Temperature.....30-35.
* Max Humidity........84-94 percent valleys and 76-86 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 5-15 mph.
* Mixing Height.......6 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....West 15 mph.
* Chance Lightning....Near 0 percent in the West Lolo...and 20
percent in the East Lolo.
* CWR (> 0.10 Inch)...20 percent.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Snow and rain in the morning,
then snow showers with possible rain showers and thunderstorms
likely in the afternoon. Snow level 4000 feet.
* Max Temperature.....38-48.
* Min Humidity........40-50 percent valleys and 51-61 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 15-25 mph.
* Ridge Top............West 20-30 mph.
* Mixing Height.......2 kft agl until 0800. 8 kft agl after 1300.
* Transport Winds.....West 20 mph until 1100, then 25 mph.
* Chance Lightning....15 percent in the West Lolo...and 20 percent
in the East Lolo.
* CWR (> 0.10 Inch)...10 percent.
.TUESDAY...Partly cloudy with slight chance of snow. Chance of snow
20 percent. Lows 25-35. Highs 45-55. Min humidities 25-35 percent. West
winds 15-25 mph.
.WEDNESDAY...Partly cloudy. Lows 30-40. Highs 50-60. Min humidities
25-35 percent. West winds 5-10 mph.
.THURSDAY...Mostly clear. Lows 30-40. Highs 55-65. Northeast winds
10-15 mph.
.FRIDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 60-70.
.SATURDAY...Cooler. Mostly cloudy with chance of rain. Chance of rain
40 percent. Lows 35-45. Highs 50-60.
$$
MTZ107-210930-
Flathead Reservation-
326 AM MDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Chance of rain. Snow level
5500 feet.
* Max Temperature.....60-65 valleys and 35-40 ridges.
* Min Humidity........34-44 percent valleys and 59-69 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 until 0900, then 3
kft agl until 1000, then 4 kft agl until 1100, then 5 kft agl
until 1200, then 7 kft agl until 1400, then 8 kft agl until 1700,
then 7 kft agl.
* Transport Winds.....Southwest 15 mph until 1300, then west 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain and snow in the
evening, then snow showers likely with possible rain showers and
thunderstorms after midnight. Snow level 5000 feet.
* Min Temperature.....35-40 valleys and 25-30 ridges.
* Max Humidity........77-87 percent valleys and 85-95 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 10-15 mph.
* Ridge Top............Southwest 10-15 mph.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....West 15 mph.
* Chance Lightning....15 percent in areas west of Highway 93...and
20 percent in the Mission Mtns and areas east of Highway 93.
* CWR (> 0.10 Inch)...10 percent in areas west of Highway 93...and
50 percent in the Mission Mtns and areas east of Highway 93.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Rain and snow likely in the
morning, then rain showers, snow showers and slight chance of
thunderstorms in the afternoon. Snow level 4000 feet.
* Max Temperature.....50-55 valleys and 30-35 ridges.
* Min Humidity........36-46 percent valleys and 62-72 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............West 20-30 mph.
* Mixing Height.......3 kft agl until 0900. 7 kft agl after 1300.
* Transport Winds.....Southwest 15 mph until 1000, then west 25
mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.TUESDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 30-40. Highs 50-60. Min humidities 20-30 percent.
Southwest winds 15-25 mph.
.WEDNESDAY...Partly cloudy. Lows 30-40. Highs 55-65. Min humidities
20-30 percent. West winds 10-15 mph.
.THURSDAY...Mostly clear. Lows 35-45. Highs 60-70. Northeast winds
10-15 mph.
.FRIDAY...Partly cloudy. Lows 35-45. Highs 65-75.
.SATURDAY...Cooler. Mostly cloudy with chance of rain. Chance of rain
30 percent. Lows 40-50. Highs 55-65.
$$
MTZ109-210930-
Bitterroot-
326 AM MDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Snow likely. Snow level 6000
feet.
* Max Temperature.....55-60 valleys and 40-45 ridges.
* Min Humidity........32-42 percent valleys and 46-56 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 10-20 mph.
* Mixing Height.......1-2 kft agl until 0900, then 3 kft agl until
1000, then 4 kft agl until 1100, then 6 kft agl until 1300, then
7 kft agl until 1700, then 5 kft agl.
* Transport Winds.....Southwest 10 mph until 1300, then west 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Snow with rain likely. Snow
level 5500 feet.
* Min Temperature.....25-35.
* Max Humidity........75-85 percent.
* 20-Foot Winds.......
* Lower Elevation......Northwest 5-10 mph becoming variable less
than 5 mph after midnight.
* Ridge Top............West 10-20 mph.
* Mixing Height.......4 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....West 10 mph.
* Chance Lightning....Near 0 percent in the Darby, Sula, and West
Fork Districts...and 20 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...70 percent in the Darby, Sula, and West Fork
Districts...and 30 percent in areas north of Hamilton.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Snow and rain in the morning,
then snow showers likely and slight chance of thunderstorms in
the afternoon. Snow level 4500 feet.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........31-41 percent valleys and 48-58 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 10-20 mph.
* Ridge Top............West 15-25 mph.
* Mixing Height.......3 kft agl until 0900. 8 kft agl after 1300.
* Transport Winds.....West 15 mph until 1100, then 25 mph.
* Chance Lightning....Near 0 percent in the Darby, Sula, and West
Fork Districts...and 15 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...40 percent in the Darby, Sula, and West Fork
Districts...and 10 percent in areas north of Hamilton.
.TUESDAY...Partly cloudy. Lows 20-30. Highs 45-55. Min humidities
25-35 percent. West winds 10-20 mph.
.WEDNESDAY...Partly cloudy. Lows 25-35. Highs 50-60. Min humidities
20-30 percent. Northwest winds 5-10 mph.
.THURSDAY...Mostly clear. Lows 30-40. Highs 55-65. East winds
10-15 mph.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 35-45. Highs 60-70.
.SATURDAY...Cooler. Mostly cloudy with chance of rain and snow. Chance
of precipitation 40 percent. Lows 35-45. Highs 50-60.
$$
MTZ110-111-210930-
Deerlodge/West Beaverhead-East Beaverhead-
326 AM MDT Sun Apr 20 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Chance of snow showers in the
afternoon. Snow level 6500 feet.
* Max Temperature.....50-60 valleys and 40-45 ridges.
* Min Humidity........28-38 percent valleys and 36-46 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 5-15 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 0900. 8 kft
agl after 1300.
* Transport Winds.....West 15 mph.
* Chance Lightning....Near 0 percent in the Deerlodge/West
Beaverhead...and 25 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Snow with rain showers likely. Snow level 6500
feet.
* Min Temperature.....25-35.
* Max Humidity........73-83 percent.
* 20-Foot Winds.......
* Lower Elevation......West 10-15 mph decreasing to variable less
than 5 mph after midnight.
* Ridge Top............West 5-15 mph.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
agl after 2200.
* Transport Winds.....West 15 mph until 0100, then 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...30 percent in the Deerlodge/West
Beaverhead...and 10 percent in the East Beaverhead.
.MONDAY...
* Sky/Weather.........Mostly cloudy. Snow showers. Slight chance of
thunderstorms in the afternoon.
* Max Temperature.....40-50 valleys and 35-40 ridges.
* Min Humidity........29-39 percent valleys and 37-47 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 10-20 mph.
* Ridge Top............West 15-25 mph.
* Mixing Height.......1-2 kft agl until 0800. 8 kft agl after 1400.
* Transport Winds.....West 15 mph until 1200, then 25 mph.
* Chance Lightning....15 percent in the Deerlodge/West
Beaverhead...and 20 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent.
.TUESDAY...Partly cloudy. Lows 20-30. Highs 45-55. Min humidities
20-30 percent. West winds 15-25 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers. Chance
of snow 20 percent. Lows 25-35. Highs 45-55. Min humidities
20-30 percent. North winds 10-15 mph.
.THURSDAY...Partly cloudy with slight chance of snow showers. Chance of
snow 20 percent. Lows 30-40. Highs 50-60. Northeast winds 10-15 mph.
.FRIDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 30-40. Highs 55-65.
.SATURDAY...Mostly cloudy with chance of rain showers, snow showers and
slight chance of thunderstorms. Chance of precipitation 30 percent.
Lows 35-45. Highs 50-60.
$$