Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Wind Advisory
Area(s): Kootenai/Cabinet Region; West Glacier Region; Flathead/Mission Valleys; Potomac/Seeley Lake Region
Effective: 2025-12-10 @ 1:45 pm -> 2025-12-11 @ 9:00 am
Onset: 2025-12-10 @ 2:00 pm -> 2025-12-11 @ 9:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2025-12-10 @ 1:45 pm
Headline: Wind Advisory issued December 10 at 12:45PM MST until December 11 at 8:00AM MST by NWS Missoula MT
Description: * WHAT...Southwest winds 15 to 25 mph with gusts up to 60 mph
expected. Valleys are expected to gust 30-40 mph with stronger
gusts at higher elevations. Winds will be very erratic.

* WHERE...Flathead/Mission Valleys, Kootenai/Cabinet Region, West
Glacier Region, and Potomac/Seeley Lake Region.

* WHEN...Until 8 AM MST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

Alert: Wind Advisory
Area(s): Butte/Blackfoot Region
Effective: 2025-12-10 @ 1:45 pm -> 2025-12-10 @ 8:00 pm
Onset: 2025-12-10 @ 1:45 pm -> 2025-12-10 @ 8:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2025-12-10 @ 1:45 pm
Headline: Wind Advisory issued December 10 at 12:45PM MST until December 10 at 7:00PM MST by NWS Missoula MT
Description: * WHAT...Southwest winds 15 to 25 mph with gusts up to 50 mph.

* WHERE...Butte/Blackfoot Region.

* WHEN...Until 7 PM MST this evening.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

Alert: Wind Advisory
Area(s): Missoula/Bitterroot Valleys
Effective: 2025-12-10 @ 1:45 pm -> 2025-12-10 @ 8:00 pm
Onset: 2025-12-10 @ 1:45 pm -> 2025-12-10 @ 8:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2025-12-10 @ 1:45 pm
Headline: Wind Advisory issued December 10 at 12:45PM MST until December 10 at 7:00PM MST by NWS Missoula MT
Description: * WHAT...South winds 10 to 20 mph with gusts up to 45 mph.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...Until 7 PM MST this evening.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

Alert: Winter Weather Advisory
Area(s): Southern Rocky Mountain Front
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-12 @ 12:00 am
Onset: 2025-12-11 @ 10:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 11:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations of 1 to 3 inches, with localized amounts up to 6
inches over the highest peaks. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 8 and 15 inches
possible. Winds could gust as high as 50 mph.

* WHERE...Southern Rocky Mountain Front.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Weather Advisory
Area(s): Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-11 @ 4:00 pm
Onset: 2025-12-11 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 3:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations up to 2 inches. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 5 and 12 inches
possible.

* WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and
Northern Blaine County.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Winter Weather Advisory
Area(s): Western and Central Chouteau County
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-11 @ 4:00 pm
Onset: 2025-12-11 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 3:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, wet snow expected. Total
snow accumulations up to 2 inches. For the Winter Storm Watch,
heavy snow possible. Total snow accumulations between 5 and 12
inches possible.

* WHERE...Western and Central Chouteau County.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Winter Weather Advisory
Area(s): East Glacier Park Region
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-11 @ 4:00 pm
Onset: 2025-12-11 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 3:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations of 1 to 3 inches, with localized amounts up to 6
inches over the highest peaks. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 8 and 15 inches
possible. Winds could gust as high as 40 mph.

* WHERE...East Glacier Park Region Zone.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Winter Storm Watch
Area(s): Southern High Plains; Cascade County below 5000ft; Judith Basin County and Judith Gap; Little Belt and Highwood Mountains
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations between 1 and 3 inches. For the Winter Storm Watch,
heavy snow possible. Total snow accumulations between 5 and 12
inches possible. Winds could gust as high as 35 mph.

* WHERE...Cascade County, including the Little Belt and Highwood
Mountains, Southern High Plains, and Judith Basin County and
Judith Gap.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. The hazardous conditions could
impact the Thursday morning and evening commutes.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Storm Watch
Area(s): Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...Heavy snow possible. Total snow accumulations between 5 and
12 inches possible.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera
Counties, and Eastern Toole and Liberty Counties.

* WHEN...From late Thursday night through late Friday night.

* IMPACTS...Travel could be very difficult.

Alert: Winter Weather Advisory
Area(s): Southern High Plains; Cascade County below 5000ft; Judith Basin County and Judith Gap; Little Belt and Highwood Mountains
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-12 @ 12:00 am
Onset: 2025-12-11 @ 10:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 11:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations between 1 and 3 inches. For the Winter Storm Watch,
heavy snow possible. Total snow accumulations between 5 and 12
inches possible. Winds could gust as high as 35 mph.

* WHERE...Cascade County, including the Little Belt and Highwood
Mountains, Southern High Plains, and Judith Basin County and
Judith Gap.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. The hazardous conditions could
impact the Thursday morning and evening commutes.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Weather Advisory
Area(s): Fergus County below 4500ft; Snowy and Judith Mountains
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-12 @ 12:00 am
Onset: 2025-12-11 @ 10:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 11:00PM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations up to 2 inches. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 5 and 12 inches
possible.

* WHERE...Snowy and Judith Mountains and Fergus County below 4500ft.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Weather Advisory
Area(s): Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Big Belt, Bridger and Castle Mountains; Meagher County Valleys
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-12 @ 12:00 am
Onset: 2025-12-11 @ 10:00 am -> 2025-12-11 @ 6:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Weather Advisory issued December 10 at 12:41PM MST until December 11 at 11:00PM MST by NWS Great Falls MT
Description: * WHAT...Snow expected. Total snow accumulations up to 3 inches.

* WHERE...Big Belt, Bridger and Castle Mountains, Gates of the
Mountains, Meagher County Valleys, and Upper Blackfoot and
MacDonald Pass.

* WHEN...From 9 AM to 11 PM MST Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Storm Watch
Area(s): Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations up to 2 inches. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 5 and 12 inches
possible.

* WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and
Northern Blaine County.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Winter Storm Watch
Area(s): Southern Rocky Mountain Front
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations of 1 to 3 inches, with localized amounts up to 6
inches over the highest peaks. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 8 and 15 inches
possible. Winds could gust as high as 50 mph.

* WHERE...Southern Rocky Mountain Front.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Storm Watch
Area(s): Northern High Plains; Eastern Pondera and Eastern Teton
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...Heavy snow possible. Total snow accumulations between 5 and
12 inches possible.

* WHERE...Eastern Pondera and Eastern Teton Counties, and Northern
High Plains.

* WHEN...From late Thursday night through late Friday night.

* IMPACTS...Travel could be very difficult.

Alert: Winter Storm Watch
Area(s): Western and Central Chouteau County
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, wet snow expected. Total
snow accumulations up to 2 inches. For the Winter Storm Watch,
heavy snow possible. Total snow accumulations between 5 and 12
inches possible.

* WHERE...Western and Central Chouteau County.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Winter Storm Watch
Area(s): Fergus County below 4500ft; Snowy and Judith Mountains
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations up to 2 inches. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 5 and 12 inches
possible.

* WHERE...Snowy and Judith Mountains and Fergus County below 4500ft.

* WHEN...For the Winter Weather Advisory, from 9 AM to 11 PM MST
Thursday. For the Winter Storm Watch, from late Thursday night
through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the late morning to early afternoon
hours on Thursday, which will lead to a flash freeze of wet
surfaces.

Alert: Winter Storm Watch
Area(s): East Glacier Park Region
Effective: 2025-12-10 @ 1:41 pm -> 2025-12-13 @ 6:00 am
Onset: 2025-12-12 @ 1:00 am -> 2025-12-11 @ 6:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2025-12-10 @ 1:41 pm
Headline: Winter Storm Watch issued December 10 at 12:41PM MST until December 13 at 5:00AM MST by NWS Great Falls MT
Description: * WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations of 1 to 3 inches, with localized amounts up to 6
inches over the highest peaks. For the Winter Storm Watch, heavy
snow possible. Total snow accumulations between 8 and 15 inches
possible. Winds could gust as high as 40 mph.

* WHERE...East Glacier Park Region Zone.

* WHEN...For the Winter Weather Advisory, from midnight tonight to 3
PM MST Thursday. For the Winter Storm Watch, from late Thursday
night through late Friday night.

* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.

* ADDITIONAL DETAILS...A strong Arctic front will bring rapidly
falling temperatures during the morning hours on Thursday, which
will lead to a flash freeze of wet surfaces.

Alert: Flood Watch
Area(s): Flathead, MT; Lake, MT; Lincoln, MT; Mineral, MT; Sanders, MT
Effective: 2025-12-10 @ 1:24 pm -> 2025-12-11 @ 6:00 pm
Onset: 2025-12-10 @ 1:24 pm -> 2025-12-11 @ 1:30 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Missoula MT on 2025-12-10 @ 1:24 pm
Headline: Flood Watch issued December 10 at 12:24PM MST until December 11 at 5:00PM MST by NWS Missoula MT
Description: Heavy rain may fall on a deep primed snowpack leading to the melt
increasing. Flows in rivers may increase quickly and reach critical
levels.

* WHAT...Flooding caused by rain and snowmelt continues to be
possible.

* WHERE...Portions of northwest and west central Montana, including
the following counties, in northwest Montana, Flathead, Lake,
Lincoln and Sanders. In west central Montana, Mineral.

* WHEN...Through Thursday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas. Storm drains
and ditches may become clogged with debris.

* ADDITIONAL DETAILS...
- https://www.weather.gov/mso/hydrology

Alert: Winter Weather Advisory
Area(s): Fallon; Carter
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 9:00 pm
Onset: 2025-12-10 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Weather Advisory issued December 10 at 11:45AM MST until December 10 at 8:00PM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
expected. Total snow accumulations up to one inch and ice
accumulations around a light glaze possible with freezing rain. For
the Winter Storm Watch, heavy snow possible. Total snow
accumulations between 3 and 6 inches possible.

* WHERE...Carter and Fallon.

* WHEN...For the Winter Weather Advisory, until 8 PM MST this
evening. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous due to mixed
precipitation, including freezing rain. For the Winter Storm Watch,
roads may become slick and hazardous due to accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Storm Watch
Area(s): Fallon; Carter
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Watch issued December 10 at 11:45AM MST until December 13 at 11:00AM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
expected. Total snow accumulations up to one inch and ice
accumulations around a light glaze possible with freezing rain. For
the Winter Storm Watch, heavy snow possible. Total snow
accumulations between 3 and 6 inches possible.

* WHERE...Carter and Fallon.

* WHEN...For the Winter Weather Advisory, until 8 PM MST this
evening. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous due to mixed
precipitation, including freezing rain. For the Winter Storm Watch,
roads may become slick and hazardous due to accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Storm Watch
Area(s): Northern Stillwater; Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland; Southwestern Yellowstone
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Watch issued December 10 at 11:45AM MST until December 13 at 11:00AM MST by NWS Billings MT
Description: * WHAT...Heavy snow possible. Total snow accumulations between 4 and
9 inches possible.

* WHERE...Portions of central and south central Montana.

* WHEN...From Thursday afternoon through Saturday morning.

* IMPACTS...Roads may become slick and hazardous due to accumulating
snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Storm Watch
Area(s): Musselshell; Golden Valley; Northeastern Yellowstone
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Watch issued December 10 at 11:45AM MST until December 13 at 11:00AM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, wet snow occurring.
Additional snow accumulations up to one inch. Winds gusting as high
as 30 mph. For the Winter Storm Watch, heavy snow possible. Total
snow accumulations between 5 and 10 inches possible.

* WHERE...Golden Valley, Musselshell, and Northeastern Yellowstone.

* WHEN...For the Winter Weather Advisory, until 2 PM MST this
afternoon. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous. For the Winter
Storm Watch, roads may become slick and hazardous due to
accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Weather Advisory
Area(s): Musselshell; Golden Valley; Northeastern Yellowstone
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 3:00 pm
Onset: 2025-12-10 @ 12:45 pm -> 2025-12-11 @ 12:45 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Weather Advisory issued December 10 at 11:45AM MST until December 10 at 2:00PM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, wet snow occurring.
Additional snow accumulations up to one inch. Winds gusting as high
as 30 mph. For the Winter Storm Watch, heavy snow possible. Total
snow accumulations between 5 and 10 inches possible.

* WHERE...Golden Valley, Musselshell, and Northeastern Yellowstone.

* WHEN...For the Winter Weather Advisory, until 2 PM MST this
afternoon. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous. For the Winter
Storm Watch, roads may become slick and hazardous due to
accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Weather Advisory
Area(s): Treasure; Northern Rosebud; Custer; Powder River; Northern Big Horn; Southern Rosebud; Southern Big Horn
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 6:00 pm
Onset: 2025-12-10 @ 12:45 pm -> 2025-12-11 @ 12:45 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Weather Advisory issued December 10 at 11:45AM MST until December 10 at 5:00PM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
occurring. Additional snow accumulations up to one inch and ice
accumulations around a light glaze possible. For the Winter Storm
Watch, heavy snow possible. Total snow accumulations between 5 and
10 inches possible.

* WHERE...Portions of south central and southeast Montana.

* WHEN...For the Winter Weather Advisory, until 5 PM MST this
afternoon. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous due to mixed
precipitation, including freezing rain. For the Winter Storm Watch,
roads may become slick and hazardous due to accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: Winter Storm Warning
Area(s): Absaroka/Beartooth Mountains
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 6:00 pm
Onset: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 6:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Warning issued December 10 at 11:45AM MST until December 10 at 5:00PM MST by NWS Billings MT
Description: * WHAT...Periods of heavy snow. Additional snow accumulations of 3 to
6 inches, greatest on west aspects. Winds gusting as high as 50
mph.

* WHERE...Absaroka/Beartooth Mountains.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Recreation in the high country will be impacted by heavy
accumulating snow and significant blowing snow. Whiteout conditions
are possible over the highest elevations. Avalanche danger will
increase.

* ADDITIONAL DETAILS...Additional periods of snow possible Thursday
into Friday.

Alert: Winter Weather Advisory
Area(s): Bighorn Canyon; Sheridan Foothills
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 6:00 pm
Onset: 2025-12-10 @ 12:45 pm -> 2025-12-10 @ 6:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Weather Advisory issued December 10 at 11:45AM MST until December 10 at 5:00PM MST by NWS Billings MT
Description: * WHAT...Mixed precipitation occurring. Additional snow accumulations
less than 1 inch. A glaze of ice is possible with freezing rain.

* WHERE...In Montana, Bighorn Canyon. In Wyoming, Sheridan Foothills.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Roads may become slick and hazardous today, including
Interstate 90 through Sheridan and over Aberdeen Hill.

Alert: Winter Storm Watch
Area(s): Crazy Mountains
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Watch issued December 10 at 11:45AM MST until December 13 at 11:00AM MST by NWS Billings MT
Description: * WHAT...Periods of heavy snow and blowing snow possible. Total snow
accumulations between 10 and 18 inches. Winds could gust as high as
60 mph.

* WHERE...Crazy Mountains.

* WHEN...From Thursday afternoon through Saturday morning.

* IMPACTS...Recreation in the high country may be impacted by heavy
accumulating snow and blowing snow. Avalanche danger may increase.

Alert: Winter Storm Watch
Area(s): Treasure; Northern Rosebud; Custer; Powder River; Northern Big Horn; Southern Rosebud; Southern Big Horn
Effective: 2025-12-10 @ 12:45 pm -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 12:45 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2025-12-10 @ 12:45 pm
Headline: Winter Storm Watch issued December 10 at 11:45AM MST until December 13 at 11:00AM MST by NWS Billings MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
occurring. Additional snow accumulations up to one inch and ice
accumulations around a light glaze possible. For the Winter Storm
Watch, heavy snow possible. Total snow accumulations between 5 and
10 inches possible.

* WHERE...Portions of south central and southeast Montana.

* WHEN...For the Winter Weather Advisory, until 5 PM MST this
afternoon. For the Winter Storm Watch, from Thursday afternoon
through Saturday morning.

* IMPACTS...Impacts to travel are possible. For the Winter Weather
Advisory, roads may become slick and hazardous due to mixed
precipitation, including freezing rain. For the Winter Storm Watch,
roads may become slick and hazardous due to accumulating snowfall.

* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
accumulating snow may result in a flash freeze on roadways late
Thursday afternoon and evening. Travel may become treacherous.

Alert: High Wind Warning
Area(s): Judith Basin County and Judith Gap
Effective: 2025-12-10 @ 11:52 am -> 2025-12-11 @ 4:00 pm
Onset: 2025-12-10 @ 11:52 am -> 2025-12-11 @ 3:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 11:52 am
Headline: High Wind Warning issued December 10 at 10:52AM MST until December 11 at 3:00PM MST by NWS Great Falls MT
Description: * WHAT...West winds 25 to 35 mph with gusts up to 60 mph.

* WHERE...Judith Basin County and Judith Gap.

* WHEN...Until 3 PM MST Thursday.

* IMPACTS...Travel could be difficult, especially for high profile
vehicles.

Alert: High Wind Warning
Area(s): Upper Blackfoot and MacDonald Pass
Effective: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Onset: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 11:52 am
Headline: High Wind Warning issued December 10 at 10:52AM MST until December 10 at 8:00PM MST by NWS Great Falls MT
Description: * WHAT...West winds 35 to 45 mph, with gusts up to 65 mph expected.

* WHERE...Upper Blackfoot and MacDonald Pass.

* WHEN...Until 8 PM MST this evening.

* IMPACTS...Travel could be difficult, especially for high profile
vehicles.

Alert: High Wind Warning
Area(s): Eastern Glacier, Western Toole, and Central Pondera
Effective: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Onset: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 11:52 am
Headline: High Wind Warning issued December 10 at 10:52AM MST until December 10 at 8:00PM MST by NWS Great Falls MT
Description: * WHAT...West winds 35 to 45 mph, with gusts up to 80 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera
Counties.

* WHEN...Until 8 PM MST this evening.

* IMPACTS...Travel could be difficult, especially for high profile
vehicles.

Alert: High Wind Warning
Area(s): Northern High Plains; Southern High Plains
Effective: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Onset: 2025-12-10 @ 11:52 am -> 2025-12-10 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 11:52 am
Headline: High Wind Warning issued December 10 at 10:52AM MST until December 10 at 8:00PM MST by NWS Great Falls MT
Description: * WHAT...West winds 45 to 55 mph, with gusts up to 90 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain
Front.

* WHEN...Until 8 PM MST this evening.

* IMPACTS...Travel could be difficult, especially for high profile
vehicles.

Alert: High Wind Warning
Area(s): Madison River Valley
Effective: 2025-12-10 @ 11:52 am -> 2025-12-11 @ 4:00 pm
Onset: 2025-12-10 @ 11:52 am -> 2025-12-11 @ 3:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2025-12-10 @ 11:52 am
Headline: High Wind Warning issued December 10 at 10:52AM MST until December 11 at 3:00PM MST by NWS Great Falls MT
Description: * WHAT...South winds 30 to 40 mph, with gusts up to 60 mph.

* WHERE...Madison River Valley.

* WHEN...Until 3 PM MST Thursday.

* IMPACTS...High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.

Alert: Avalanche Warning
Area(s): Kootenai/Cabinet Region
Effective: 2025-12-10 @ 9:44 am
Onset: 2025-12-10 @ 9:44 am -> 2025-12-11 @ 9:00 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Missoula MT on 2025-12-10 @ 9:44 am
Headline: Avalanche Warning issued December 10 at 8:44AM MST by NWS Missoula MT
Description: AVWMSO

The following message is transmitted at the request of Idaho Panhandle
Avalanche Center Sandpoint ID.

...AVALANCHE WARNING ISSUED BY THE IDAHO PANHANDLE AVALANCHE CENTER...

07:00 PST Wed Dec 10 2025 The Idaho Panhandle Avalanche Center in
Sandpoint has issued a BACKCOUNTRY AVALANCHE WARNING for the
following areas:

NWS Missoula MT -
MTZ001 (MTZ001)

NWS Spokane WA -
ID 017 (Bonner County)...ID 021 (Boundary County)

* WHAT...An Avalanche Warning is in effect from Wednesday 7 AM to
Thursday 7 AM. Very dangerous avalanche conditions will reemerge
from another round of heavy rain and strong winds - this time
climbing up to 8,000 feet. It will be very easy to trigger
avalanches large enough to bury or kill you, and many will
release spontaneously. Avoid travel in avalanche terrain during
this period.

* WHERE...The Selkirk Mountains, and West and East Cabinet
Mountains above 4,000 feet.

* WHEN...In effect from Wed 07:00 PST to Thu 07:00 PST.

* IMPACTS...The next potent atmospheric river will deliver copious
amounts of rain to an already stressed snowpack across the
mountains of North Idaho and Northwestern Montana. The rain line
will spike to around 8,000 feet on Wednesday and quickly
overload buried weak snow layers. It will be very likely for
backcountry travelers to trigger dangerous avalanches and
natural avalanches are likely. Avalanches will break wide across
terrain features and run long distances to lower elevation
slopes.

* PRECAUTIONARY / PREPAREDNESS ACTIONS...Travel in, near, or below
avalanche terrain is not recommended during this period.

Consult http://www.idahopanhandleavalanche.org/ or www.avalanche.org for
more detailed information.

Similar avalanche danger may exist at locations outside the coverage area of
this or any avalanche center.

Alert: Avalanche Warning
Area(s): Absaroka/Beartooth Mountains
Effective: 2025-12-10 @ 6:37 am
Onset: 2025-12-10 @ 6:37 am -> 2025-12-11 @ 6:00 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Billings MT on 2025-12-10 @ 6:37 am
Headline: Avalanche Warning issued December 10 at 5:37AM MST by NWS Billings MT
Description: AVWBYZ

The following message is transmitted at the request of the
Gallatin National Forest Avalanche Center.

The Gallatin NF Avalanche Center in Bozeman has issued a
BACKCOUNTRY AVALANCHE WARNING for the following areas:
NWS Billings MT - MTZ067 (MTZ067)

* WHAT...The avalanche danger is HIGH and avalanches will happen
today.

* WHERE...The mountains near Cooke City.

* WHEN...In effect from Tue 04:39 MST to Wed 04:39 MST.

* IMPACTS...Avalanches have been happening for the last 4 days.
More snow and especially high winds will cause many more
avalanches today.

* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions. Stay far away from any steep slope. Avalanches may
be triggered from flat terrain below steeper slopes.

Consult http://www.mtavalanche.com or www.avalanche.org for more
detailed information.

Similar avalanche danger may exist at locations outside the
coverage area of this or any avalanche center.

Alert: Winter Weather Advisory
Area(s): Daniels; Sheridan; Western Roosevelt; Richland; Wibaux; Northern Valley; Eastern Roosevelt
Effective: 2025-12-10 @ 4:56 am -> 2025-12-11 @ 9:00 pm
Onset: 2025-12-10 @ 5:00 am -> 2025-12-10 @ 5:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2025-12-10 @ 4:56 am
Headline: Winter Weather Advisory issued December 10 at 3:56AM MST until December 11 at 8:00PM MST by NWS Glasgow MT
Description: * WHAT...Mixed precipitation expected. Total snow accumulations
between 1 and 4 inches and ice accumulations up to one tenth of an
inch.

* WHERE...A portion of northeast Montana.

* WHEN...Until 8 PM MST Thursday.

* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Plan on slippery road
conditions.

Alert: Winter Weather Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone; Dawson; Prairie; Northern Phillips; Southwest Phillips
Effective: 2025-12-10 @ 4:56 am -> 2025-12-11 @ 9:00 pm
Onset: 2025-12-10 @ 5:00 am -> 2025-12-10 @ 5:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2025-12-10 @ 4:56 am
Headline: Winter Weather Advisory issued December 10 at 3:56AM MST until December 11 at 8:00PM MST by NWS Glasgow MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
expected. Total snow accumulations up to 3 inches and ice
accumulations up to one tenth of an inch. For the Winter Storm
Watch, heavy snow possible. Total snow accumulations between 6 and
11 inches possible.

* WHERE...A portion of northeast Montana.

* WHEN...For the Winter Weather Advisory, until 8 PM MST Thursday.
For the Winter Storm Watch, from Thursday evening through Saturday
morning.

* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult.

Alert: Winter Storm Watch
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone; Dawson; Prairie; Northern Phillips; Southwest Phillips
Effective: 2025-12-10 @ 4:56 am -> 2025-12-13 @ 12:00 pm
Onset: 2025-12-11 @ 9:00 pm -> 2025-12-10 @ 5:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Glasgow MT on 2025-12-10 @ 4:56 am
Headline: Winter Storm Watch issued December 10 at 3:56AM MST until December 13 at 11:00AM MST by NWS Glasgow MT
Description: * WHAT...For the Winter Weather Advisory, mixed precipitation
expected. Total snow accumulations up to 3 inches and ice
accumulations up to one tenth of an inch. For the Winter Storm
Watch, heavy snow possible. Total snow accumulations between 6 and
11 inches possible.

* WHERE...A portion of northeast Montana.

* WHEN...For the Winter Weather Advisory, until 8 PM MST Thursday.
For the Winter Storm Watch, from Thursday evening through Saturday
morning.

* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult.

Alert: High Wind Warning
Area(s): Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland
Effective: 2025-12-10 @ 2:20 am -> 2025-12-11 @ 6:00 pm
Onset: 2025-12-10 @ 3:00 pm -> 2025-12-11 @ 2:30 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 2:20 am
Headline: High Wind Warning issued December 10 at 1:20AM MST until December 11 at 5:00PM MST by NWS Billings MT
Description: * WHAT...West winds gusting up to 65 mph expected.

* WHERE...Judith Gap, Southern Wheatland, Melville Foothills, and
Northern Sweet Grass.

* WHEN...From 2 PM this afternoon to 5 PM MST Thursday.

* IMPACTS...Strong crosswinds will make travel difficult along US-191
from Big Timber through Harlowton, especially for high profile
vehicles.

* ADDITIONAL DETAILS...Strongest winds are expected tonight through
Thursday morning.

Alert: Wind Advisory
Area(s): Livingston Area; Beartooth Foothills
Effective: 2025-12-10 @ 2:20 am -> 2025-12-11 @ 6:00 pm
Onset: 2025-12-10 @ 12:00 pm -> 2025-12-11 @ 2:30 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2025-12-10 @ 2:20 am
Headline: Wind Advisory issued December 10 at 1:20AM MST until December 11 at 5:00PM MST by NWS Billings MT
Description: * WHAT...Southwest winds gusting up to 70 mph expected.

* WHERE...Beartooth Foothills and Livingston Area.

* WHEN...From 11 AM this morning to 5 PM MST Thursday.

* IMPACTS...Strong crosswinds will make travel difficult along
Interstate 90 from Livingston to Big Timber and roads along the
Beartooth Foothills.

* ADDITIONAL DETAILS...Strongest winds are expected tonight through
Thursday morning.

Alert: Hydrologic Outlook
Area(s): Granite, MT; Missoula, MT; Ravalli, MT
Effective: 2025-12-08 @ 2:22 pm
Onset: 2025-12-08 @ 2:22 pm -> 2025-12-10 @ 3:00 pm
Severity: Unknown
Certainty: Possible
Urgency: Future
Issued By: NWS Missoula MT on 2025-12-08 @ 2:22 pm
Headline: Hydrologic Outlook issued December 8 at 1:22PM MST by NWS Missoula MT
Description: ESFMSO

A prolonged atmospheric river is expected to bring periods of heavy
rain for western Montana Monday night through Thursday. Rising snow
levels will lead to a rain-on-snow event for elevations below 7,000
feet Monday night into Tuesday morning. Precipitation rates will
briefly decrease Tuesday afternoon before a second surge of moisture
arrives Tuesday night into Thursday. During the second surge, snow
levels will be lower initially, ranging from 3,500 to 5,000 feet
with some slushy snow accumulations across northwest Montana
valleys, but will then rise to 6,000 to 8,000 feet Wednesday into
Thursday. By Thursday, significant precipitation totals are
forecast, with 1 to 4 inches in the valleys and 5 to 8 inches in the
mountains, with locally higher totals over mountain crests.

Landslides in areas of steep terrain and minor flooding in urban and
poor-drainage areas are possible. Storm drains and ditches may
become clogged with debris. You may want to preemptively shovel snow
away from your homes. Watch basements for moisture intrusion.