Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: High Wind Warning
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; Northern Phillips; Southwest Phillips; Northern Valley
Effective: 2026-04-23 @ 1:49 am -> 2026-04-23 @ 9:00 pm
Onset: 2026-04-23 @ 1:49 am -> 2026-04-23 @ 5:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-04-23 @ 1:49 am
Headline: High Wind Warning issued April 23 at 12:49AM MDT until April 23 at 8:00PM MDT by NWS Glasgow MT
Description: * WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph
expected.

* WHERE...Phillips, Valley, Garfield, and Petroleum Counties.

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

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

Alert: High Wind Warning
Area(s): Daniels; Sheridan; Western Roosevelt; McCone; Richland; Dawson; Prairie; Wibaux; Eastern Roosevelt
Effective: 2026-04-23 @ 1:49 am -> 2026-04-23 @ 9:00 pm
Onset: 2026-04-23 @ 7:00 am -> 2026-04-23 @ 5:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-04-23 @ 1:49 am
Headline: High Wind Warning issued April 23 at 12:49AM MDT until April 23 at 8:00PM MDT by NWS Glasgow MT
Description: * WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph
expected.

* WHERE...Daniels, Dawson, Roosevelt, McCone, Prairie, Richland,
Sheridan, and Wibaux Counties.

* WHEN...From 6 AM this morning to 8 PM MDT this evening.

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

Alert: Winter Weather Advisory
Area(s): Cascade County below 5000ft
Effective: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 1:00 pm
Onset: 2026-04-23 @ 1:00 am -> 2026-04-23 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 23 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Wet snow expected. Total snow accumulations up to 5 inches,
highest over southern and eastern Cascade County.

* WHERE...Cascade County below 5000ft.

* WHEN...Until noon MDT Thursday.

* IMPACTS...Expect highly variable road conditions, including
difficult driving due to slush or snow covered roadways.

* ADDITIONAL DETAILS...Little snow is forecast in Great Falls.

Alert: Winter Weather Advisory
Area(s): Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft
Effective: 2026-04-23 @ 12:43 am -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-23 @ 7:00 pm -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Snow expected. Total snow accumulations between 1 and 3
inches. Winds gusting as high as 35 mph.

* WHERE...The Interstate 90 Corridor between Bozeman and Whitehall,
The Madison and Beaverhead River Valleys, and Canyon Ferry Area.

* WHEN...From 6 PM Thursday to noon MDT Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday evening and Friday morning
commutes.

Alert: Winter Storm Warning
Area(s): Gallatin and Madison County Mountains and Centennial Mountains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Storm Warning issued April 22 at 11:43PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Heavy, wet snow. Additional snow accumulations between 7
and 14 inches, with higher amounts on peaks. Winds gusting as high
as 35 mph.

* WHERE...Gallatin and Madison County Mountains and Centennial
Mountains.

* WHEN...Until noon MDT Friday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Falling and or blowing snow may significantly
reduce visibility at times. Those with outdoor plans should be
prepared for dangerous outdoor conditions.

* ADDITIONAL DETAILS...The heavy, wet snow may cause instances of
power outages and or tree damage.

Alert: Winter Weather Advisory
Area(s): Big Belt, Bridger and Castle Mountains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Snow. Additional snow accumulations between 3 and 7 inches
at and near pass level, with greater amounts above pass level.
Winds gusting as high as 45 mph.

* WHERE...Big Belt, Bridger and Castle Mountains.

* WHEN...Until noon MDT Friday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Those in the backcountry should ensure they are
prepared for dangerous conditions.

* ADDITIONAL DETAILS...The wet snow may cause isolated instances of
power outages and or tree damage.

Alert: Winter Weather Advisory
Area(s): Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Helena Valley; Elkhorn and Boulder Mountains; Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Snow. Additional snow accumulations up to 4 inches at lower
elevations and 8 inches in the mountains. Winds gusting as high as
40 mph.

* WHERE...Portions of central, north central, and southwest Montana.

* WHEN...Until noon MDT Friday.

* 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. The hazardous
conditions could impact the Thursday morning and evening commutes.

* ADDITIONAL DETAILS...Snow levels will gradually fall to lower
elevations through the night and early Thursday morning.

Alert: Winter Storm Warning
Area(s): Judith Basin County and Judith Gap
Effective: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-23 @ 1:00 am -> 2026-04-23 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Storm Warning issued April 22 at 11:43PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...Heavy, wet snow expected. Total snow accumulations of 2 to
8 inches possible, heaviest over northwestern Judith Basin county.
Winds could gust as high as 50 mph.

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

* WHEN...Until 6 PM MDT Thursday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Falling and or blowing snow may significantly
reduce visibility below a quarter mile at times.

* ADDITIONAL DETAILS...The heavy, wet snow may cause instances of
power outages and or tree damage.

Alert: Winter Storm Warning
Area(s): Little Belt and Highwood Mountains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Storm Warning issued April 22 at 11:43PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...Heavy, wet snow expected. Additional snow accumulations
between 6 and 12 inches, with higher amounts over the mountain
peaks. Winds could gust as high as 50 mph.

* WHERE...Little Belt and Highwood Mountains.

* WHEN...Until 6 PM MDT Thursday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Falling and or blowing snow may significantly
reduce visibility below a quarter mile at times. Those with
outdoor plans should be prepared for dangerous outdoor conditions.

* ADDITIONAL DETAILS...The heavy, wet snow may cause instances of
power outages and or tree damage.

Alert: Winter Weather Advisory
Area(s): East Glacier Park Region; Northern High Plains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...Snow. Additional snow accumulations up to 2 inches at lower
elevations, 4 inches at Marias Pass, and 8 inches over the high
terrain. Winds gusting as high as 45 mph.

* WHERE...Eastern Glacier National Park and adjacent foothills and
plains.

* WHEN...Until 6 PM MDT Thursday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Falling and or blowing snow may significantly
reduce visibility at times. Tire chains may be required for some
vehicles if traveling through mountain passes. Those with outdoor
plans should be prepared for dangerous outdoor conditions.

* ADDITIONAL DETAILS...The heavy, wet snow may cause instances of
power outages and or tree damage.

Alert: Winter Weather Advisory
Area(s): Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft; Snowy and Judith Mountains
Effective: 2026-04-23 @ 12:43 am -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-23 @ 1:00 am -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-23 @ 12:43 am
Headline: Winter Weather Advisory issued April 22 at 11:43PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...Wet snow expected. Total snow accumulations between 2 and 8
inches, highest over the Bears Paw and Snowy Mountains. Winds
gusting over 50 mph at times.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and
Southern Blaine, and Fergus County below 4500ft.

* WHEN...Until 6 PM MDT Thursday.

* IMPACTS...Expect difficult driving conditions due to slush or snow
covered roadways. Falling and or blowing snow may significantly
reduce visibility at times. Those with outdoor plans should be
prepared for dangerous outdoor conditions.

* ADDITIONAL DETAILS...The wet snow may cause instances of power
outages and or tree damage.

Alert: Winter Storm Warning
Area(s): Absaroka/Beartooth Mountains
Effective: 2026-04-23 @ 12:41 am -> 2026-04-24 @ 7:00 am
Onset: 2026-04-23 @ 12:41 am -> 2026-04-24 @ 12:45 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-04-23 @ 12:41 am
Headline: Winter Storm Warning issued April 22 at 11:41PM MDT until April 24 at 6:00AM MDT by NWS Billings MT
Description: * WHAT...Periods of moderate to heavy snow. Total snow accumulations
between 10 and 18 inches. Winds gusting as high as 60 mph.

* WHERE...Absaroka/Beartooth Mountains.

* WHEN...Until 6 AM MDT Friday.

* IMPACTS...Recreation in the high country will be impacted by heavy
accumulating snow. Blowing snow could significantly reduce
visibility.

* ADDITIONAL DETAILS...The strongest winds are forecast through this
morning.

Alert: Winter Storm Warning
Area(s): Crazy Mountains
Effective: 2026-04-23 @ 12:41 am -> 2026-04-24 @ 7:00 am
Onset: 2026-04-23 @ 12:41 am -> 2026-04-24 @ 12:45 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-04-23 @ 12:41 am
Headline: Winter Storm Warning issued April 22 at 11:41PM MDT until April 24 at 6:00AM MDT by NWS Billings MT
Description: * WHAT...Periods of moderate to heavy snow. Total snow accumulations
of 12 to 18 inches. Winds gusting as high as 70 mph.

* WHERE...Crazy Mountains.

* WHEN...Until 6 AM MDT Friday.

* IMPACTS...Recreation in the high country will be impacted by heavy
accumulating snow. Blowing snow could significantly reduce
visibility.

Alert: High Wind Warning
Area(s): Eastern Toole and Liberty; Hill County; Northern Blaine County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft
Effective: 2026-04-22 @ 11:57 pm -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-22 @ 11:57 pm -> 2026-04-23 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-04-22 @ 11:57 pm
Headline: High Wind Warning issued April 22 at 10:57PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...Northwesterly winds 30 to 40 mph with gusts up to 65 mph
expected.

* WHERE...Eastern Toole and Liberty Counties, Hill County, Northern
Blaine County, Western and Central Chouteau County, Bears Paw
Mountains and Southern Blaine, and Fergus County below 4500ft.

* WHEN...Until 6 PM MDT Thursday.

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

* ADDITIONAL DETAILS...The strongest winds will be the over the
southeast aspects of the Sweetgrass Hills, Bear's Paw, and Snowy
Mountains.

Alert: Winter Weather Advisory
Area(s): Northern Valley
Effective: 2026-04-22 @ 1:47 pm -> 2026-04-23 @ 3:00 pm
Onset: 2026-04-23 @ 7:00 am -> 2026-04-23 @ 5:15 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-04-22 @ 1:47 pm
Headline: Winter Weather Advisory issued April 22 at 12:47PM MDT until April 23 at 2:00PM MDT by NWS Glasgow MT
Description: * WHAT...Wet snow expected. Total snow accumulations up to around
two inches. Winds gusting as high as 55 mph.

* WHERE...Northern Valley County.

* WHEN...From 6 AM to 2 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday morning commute.

* ADDITIONAL DETAILS...Accumulations will be most prevalent for the
highest elevations in the vicinity of Opheim.

Alert: Winter Weather Advisory
Area(s): Potomac/Seeley Lake Region
Effective: 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-04-21 @ 2:50 pm
Headline: Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT
Description: * WHAT...Snow expected. There is a likelihood of moderate to
isolated major winter weather impacts. Total snow accumulations of
2 and 4 inches in the valleys and 6 to 12 inches in the mountains.

* WHERE...Highway 200 Bonner to Greenough, I-90 East Missoula to
Bearmouth, and Highway 83 Seeley Lake to Condon.

* WHEN...From 6 PM Wednesday to noon MDT Friday.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Hazardous traveling conditions. Use extra
caution while driving. Closures and disruptions to infrastructure
may occur. For MAJOR winter weather impacts, expect considerable
disruptions to normal activities. Dangerous or impossible
traveling conditions. Avoid travel in the impacted areas if
possible. Widespread closures and disruptions to infrastructure
may occur. The hazardous conditions could impact the Thursday
morning and evening commutes, especially over higher passes.

* ADDITIONAL DETAILS...The most impactful snow accumulations are
most likely to occur Thursday evening through Friday morning.

Alert: Winter Weather Advisory
Area(s): Bitterroot/Sapphire Mountains
Effective: 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-04-21 @ 2:50 pm
Headline: Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT
Description: * WHAT...Snow expected. There is a likelihood of moderate winter
weather impacts. Total snow accumulations of 1 to 5 inches below
4000 feet, 6 to 10 inches at pass level and over 12 inches in the
high terrain.

* WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass.

* WHEN...From 6 PM Wednesday to noon MDT Friday.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Hazardous traveling conditions. Use extra
caution while driving. Closures and disruptions to infrastructure
may occur. The hazardous conditions could impact the Thursday
morning and evening commutes, especially over higher passes.

Alert: Winter Weather Advisory
Area(s): Butte/Blackfoot Region
Effective: 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm
Onset: 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-04-21 @ 2:50 pm
Headline: Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT
Description: * WHAT...Snow expected. There is a likelihood of moderate to
isolated major winter weather impacts. Total snow accumulations of
2 and 5 inches in the valleys, 5 to 10 inches at pass level, and
over 12 inches in the high terrain. Winds gusting as high as 35
mph.

* WHERE...Georgetown Lake, Butte, Highway 12 Garrison to Elliston,
MacDonald Pass, and Homestake Pass.

* WHEN...From 6 PM Wednesday to noon MDT Friday.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Hazardous traveling conditions. Use extra
caution while driving. Closures and disruptions to infrastructure
may occur. For MAJOR winter weather impacts, expect considerable
disruptions to normal activities. Dangerous or impossible
traveling conditions. Avoid travel in the impacted areas if
possible. Widespread closures and disruptions to infrastructure
may occur. The hazardous conditions could impact the Thursday
morning and evening commutes, especially over higher passes.

* ADDITIONAL DETAILS...The most impactful snow accumulations are
most likely to occur Thursday evening through Friday morning.

Alert: Winter Weather Advisory
Area(s): West Glacier Region
Effective: 2026-04-21 @ 2:50 pm -> 2026-04-23 @ 7:00 pm
Onset: 2026-04-22 @ 7:00 pm -> 2026-04-23 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-04-21 @ 2:50 pm
Headline: Winter Weather Advisory issued April 21 at 1:50PM MDT until April 23 at 6:00PM MDT by NWS Missoula MT
Description: * WHAT...Snow expected. There is a likelihood of moderate winter
weather impacts. Total snow accumulations of 1 to 3 inches below
4000 feet, 4 to 7 inches at pass level and over 10 inches in the
high terrain.

* WHERE...Glacier National Park, Marias Pass, Bad Rock Canyon,
Essex, Highway 83 Bigfork to Swan Lake, and Polebridge.

* WHEN...From 6 PM Wednesday to 6 PM MDT Thursday.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Hazardous traveling conditions. Use extra
caution while driving. Closures and disruptions to infrastructure
may occur. The hazardous conditions could impact the Thursday
morning and evening commutes, especially over higher passes.