287
FNUS55 KMSO 171001
FWFMSO

Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
401 AM MDT Sat May 17 2025


.DISCUSSION...

Idaho (Zones 102 and 103): A wet and cool system will begin to spread
precipitation into the region this afternoon, becoming moderate
overnight tonight into Sunday morning. Chance of a wetting rain is near
100 percent area wide by Sunday afternoon, with a 70 to 90 percent
chance of 0.25" or more. Snow will likely occur down to 5000 feet. Cool,
showery and foggy conditions are anticipated for Monday.

Northwest MT (Zones 104 and 105): A brief break between weather systems
is anticipated today. A wet and cool system will begin to spread
precipitation into the region this evening, becoming moderate by Sunday
morning. Chance of a wetting rain is 80 to 90 percent area wide by
Sunday night, with a 70 to 90 percent chance of 0.25" or more along the
Continental Divide into Glacier Park. Snow will likely occur down to
5000 feet. Cool, showery and foggy conditions are anticipated for
Monday.

West Central MT (Zones 106, 107 and 108): A brief break between weather
systems is anticipated today. A wet and cool system will begin to
spread precipitation into the region this evening, becoming moderate by
late tonight. Chance of a wetting rain is near 100 percent area wide by
Sunday afternoon, with a 70 to 90 percent chance of 0.25" or more,
especially from Missoula eastward. Snow will likely occur down to 5000
feet, possibly lower. Cool, showery and foggy conditions are anticipated
for Monday.

Southwest MT (Zones 109, 110 and 111): A brief break between weather
systems is anticipated today. A wet and cool system will begin to
spread precipitation into the region this evening, becoming moderate by
late tonight. Chance of a wetting rain is near 100 percent area wide by
Sunday evening, with a 70 to 90 percent chance of 0.25" or more. Snow
will likely occur down to 5000 feet, possibly lower. Cool, showery and
foggy conditions are anticipated for Monday.

IDZ102-103-181015-
Palouse/Hells Canyon-Clearwater/Nez Perce-
301 AM PDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy. Snow level 7000 feet.
* Max Temperature.....65-70 valleys and 50-60 ridges.
* Min Humidity........34-44 percent valleys and 43-53 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............South 5-10 mph becoming northwest in the
      afternoon.
* 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 1700, then 6 kft agl.
* Transport Winds.....Variable less than 10 mph until 1600, then
  north 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.

.TONIGHT...
* Sky/Weather.........Slight chance of thunderstorms in the
  evening. Rain showers. Snow after midnight. Snow level 7000 feet.
* Min Temperature.....30-40.
* Max Humidity........79-89 percent.
* 20-Foot Winds.......
*     Lower Elevation......West 10-20 mph.
*     Ridge Top............West 10-20 mph.
* Mixing Height.......5 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Northwest 15 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...100 percent.

.SUNDAY...
* Sky/Weather.........Mostly cloudy. Rain and snow. Snow level 4500
  feet.
* Max Temperature.....45-55 valleys and 35-45 ridges.
* Min Humidity........51-61 percent valleys and 63-73 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 10-20 mph.
*     Ridge Top............West 10-20 mph.
* Mixing Height.......3 kft agl until 1000. 7 kft agl after 1400.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...60 percent in the Palouse/Hells Canyon...and
  90 percent in the Clearwater/Nez Perce.

.MONDAY...Partly cloudy with slight chance of rain and snow. Chance of
precipitation 20 percent. Lows 35-45. Highs 55-65. Min humidities
35-45 percent. West winds 10-15 mph.
.TUESDAY...Mostly cloudy with chance of rain showers. Chance of showers
40 percent. Lows 40-50. Highs 55-65. Min humidities 30-40 percent. West
winds 10-15 mph.
.WEDNESDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 60-70. Southwest winds 10-15 mph.
.THURSDAY...Partly cloudy with chance of rain. Chance of rain
40 percent. Lows 40-50. Highs 60-70.
.FRIDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 40-50. Highs 65-75.

$$

MTZ104-105-181015-
Kootenai-Flathead/Glacier Park-
401 AM MDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy. Snow level 6500 feet.
* Max Temperature.....65-70 valleys and 48-58 ridges.
* Min Humidity........26-36 percent valleys and 42-52 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 0900. 7 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Rain likely. Snow level 7000
  feet.
* Min Temperature.....35-40.
* Max Humidity........83-93 percent.
* 20-Foot Winds.......
*     Lower Elevation......North 5-10 mph.
*     Ridge Top............North 10-15 mph.
* Mixing Height.......7 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Variable less than 10 mph until 2000, then
  north 10 mph until 0400, then west 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...70 percent.

.SUNDAY...
* Sky/Weather.........Cloudy. Rain and snow. Snow level 6000 feet.
* Max Temperature.....45-55 valleys and 35-40 ridges.
* Min Humidity........56-66 percent valleys and 78-88 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 10-15 mph.
*     Ridge Top............West 10-20 mph.
* Mixing Height.......3 kft agl until 1100. 5 kft agl after 1400.
* Transport Winds.....West 15 mph until 1300, then 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 50-60. Min humidities
40-50 percent. Southwest winds 10-20 mph.
.TUESDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 50 percent. Lows 35-45. Highs 50-60. Min humidities
30-40 percent. Southwest winds 10-20 mph.
.WEDNESDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 55-65. Southwest winds 10-20 mph.
.THURSDAY...Partly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 55-65.
.FRIDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 60-70.

$$

MTZ106-108-181015-
West Lolo-East Lolo-
401 AM MDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy. Snow level 7000 feet.
* Max Temperature.....60-70 valleys and 53-63 ridges.
* Min Humidity........25-35 percent valleys and 37-47 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............South 5-10 mph becoming north in the
      afternoon.
* Mixing Height.......1-2 kft agl until 0900. 8 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Rain. Snow level 7500 feet.
* Min Temperature.....30-40.
* Max Humidity........83-93 percent.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph.
*     Ridge Top............Northwest 10-20 mph.
* Mixing Height.......7 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....North 10 mph until 0300, then west 15 mph.
* Chance Lightning....Near 0 percent in the West Lolo...and 15
  percent in the East Lolo.
* CWR (> 0.10 Inch)...90 percent.

.SUNDAY...
* Sky/Weather.........Cloudy. Rain and snow. Snow level 5500 feet.
* Max Temperature.....45-50 valleys and 30-40 ridges.
* Min Humidity........51-61 percent valleys and 66-76 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 10-20 mph.
*     Ridge Top............West 10-20 mph.
* Mixing Height.......3 kft agl until 1000. 6 kft agl after 1600.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.MONDAY...Mostly cloudy with slight chance of rain and snow. Chance of
precipitation 20 percent. Lows 35-45. Highs 50-60. Min humidities
35-45 percent. West winds 10-20 mph.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
50 percent. Lows 40-50. Highs 55-65. Min humidities 30-40 percent. West
winds 10-20 mph.
.WEDNESDAY...Partly cloudy. Lows 35-45. Highs 60-70. Southwest winds
10-20 mph.
.THURSDAY...Partly cloudy with chance of rain. Chance of rain
30 percent. Lows 40-50. Highs 55-65.
.FRIDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 35-45. Highs 60-70.

$$

MTZ107-181015-
Flathead Reservation-
401 AM MDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....65-70 valleys and 45-50 ridges.
* Min Humidity........26-36 percent valleys and 44-54 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............Southwest 5-10 mph becoming northwest 5-15
      mph in the afternoon.
* Mixing Height.......2 kft agl until 0900. 7 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Rain. Snow level 7000 feet.
* Min Temperature.....40-45 valleys and 30-35 ridges.
* Max Humidity........82-92 percent valleys and 100 percent ridges.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph.
*     Ridge Top............North 5-15 mph becoming northwest 10-20 mph
      after midnight.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
  agl after 2000.
* Transport Winds.....North 10 mph until 0100, then west 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent.

.SUNDAY...
* Sky/Weather.........Cloudy. Rain. Snow in the afternoon. Snow
  level 5500 feet.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........51-61 percent valleys and 73-83 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 10-20 mph.
*     Ridge Top............West 15-25 mph.
* Mixing Height.......3 kft agl until 1000. 6 kft agl after 1600.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.

.MONDAY...Mostly cloudy with chance of rain. Chance of rain 30 percent.
Lows 40-50. Highs 55-65. Min humidities 30-40 percent. Southwest winds
10-15 mph.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
40 percent. Lows 40-50. Highs 55-65. Min humidities 25-35 percent.
Southwest winds 10-20 mph.
.WEDNESDAY...Partly cloudy. Lows 35-45. Highs 60-70. Southwest winds
10-20 mph.
.THURSDAY...Partly cloudy with chance of rain. Chance of rain
30 percent. Lows 40-50. Highs 60-70.
.FRIDAY...Partly cloudy. Lows 40-50. Highs 65-75.

$$

MTZ109-181015-
Bitterroot-
401 AM MDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy. Snow level 7500 feet.
* Max Temperature.....65-70 valleys and 50-60 ridges.
* Min Humidity........27-37 percent valleys and 36-46 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............South 5-10 mph becoming west in the
      afternoon.
* Mixing Height.......1-2 kft agl until 0900, 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.....Variable less than 10 mph until 1600, then
  northeast 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.

.TONIGHT...
* Sky/Weather.........Rain. Snow after midnight. Patchy dense fog
  after midnight. Snow level 7500 feet.
* Min Temperature.....28-38.
* Max Humidity........80-90 percent.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph becoming west 5-10
      mph after midnight.
*     Ridge Top............Northwest 10-20 mph.
* Mixing Height.......6 kft agl until 1900. 2 kft agl after 2000.
* Transport Winds.....North 10 mph until 2400, then northwest 15
  mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.

.SUNDAY...
* Sky/Weather.........Snow and rain. Snow level 5500 feet.
* Max Temperature.....45-50 valleys and 35-40 ridges.
* Min Humidity........40-50 percent valleys and 56-66 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 1400.
* Transport Winds.....Northwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent.

.MONDAY...Mostly cloudy with chance of snow. Chance of snow 30 percent.
Lows 30-40. Highs 50-60. Min humidities 30-40 percent. West winds
10-20 mph.
.TUESDAY...Partly cloudy with chance of rain showers, snow and slight
chance of thunderstorms. Chance of precipitation 30 percent. Lows
35-45. Highs 50-60. Min humidities 25-35 percent. West winds 10-15 mph.
.WEDNESDAY...Partly cloudy. Lows 35-45. Highs 60-70. Southwest winds
10-15 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 55-65.
.FRIDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 35-45. Highs
60-70.

$$

MTZ110-111-181015-
Deerlodge/West Beaverhead-East Beaverhead-
401 AM MDT Sat May 17 2025

.TODAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
  in the afternoon.
* Max Temperature.....60-65 valleys and 50-55 ridges.
* Min Humidity........28-38 percent valleys and 34-44 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southeast 5-15 mph.
*     Ridge Top............Southeast 5-15 mph.
* Mixing Height.......1-2 kft agl until 0900. 7 kft agl after 1400.
* Transport Winds.....South 10 mph.
* Chance Lightning....15 percent.
* CWR (> 0.10 Inch)...10 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Slight chance of thunderstorms
  in the evening. Rain showers. Snow showers after midnight. Patchy
  dense fog after midnight.
* Min Temperature.....30-40.
* Max Humidity........89-98 percent valleys and 83-93 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......East 5-10 mph becoming southwest after
      midnight.
*     Ridge Top............Southeast 5-15 mph becoming southwest after
      midnight.
* Mixing Height.......5 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Southeast 10 mph until 0200, then southwest
  10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...90 percent in the Deerlodge/West
  Beaverhead...and 50 percent in the East Beaverhead.

.SUNDAY...
* Sky/Weather.........Rain showers and snow showers. Slight chance
  of thunderstorms in the afternoon. Snow level 6500 feet.
* Max Temperature.....43-53 valleys and 35-40 ridges.
* Min Humidity........48-58 percent valleys and 61-71 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Northwest 10-20 mph.
*     Ridge Top............Northwest 10-20 mph.
* Mixing Height.......3 kft agl until 0900. 5 kft agl after 1200.
* Transport Winds.....Northwest 20 mph.
* Chance Lightning....Near 0 percent in the Deerlodge/West
  Beaverhead...and 15 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...80 percent.

.MONDAY...Mostly cloudy with chance of snow showers and rain showers.
Chance of precipitation 30 percent. Lows 30-40. Highs 50-60. Min
humidities 30-40 percent. Northwest winds 10-20 mph.
.TUESDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 30-40. Highs
55-65. Min humidities 25-35 percent. West winds 10-20 mph.
.WEDNESDAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 30-40. Highs 60-70. Southwest winds
10-20 mph.
.THURSDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 35-45. Highs
55-65.
.FRIDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 35-45. Highs
60-70.

$$