Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: High Wind Warning
Area(s): Hill County; Northern Blaine County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft; Snowy and Judith Mountains
Effective: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 6:00 pm
Onset: 2026-05-14 @ 1:45 am -> 2026-05-15 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-05-14 @ 1:45 am
Headline: High Wind Warning issued May 14 at 12:45AM MDT until May 15 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...Westerly winds 30 to 40 mph with gusts up to 70 mph
expected.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and
Southern Blaine, Fergus County below 4500ft, Hill County, Northern
Blaine County, and Western and Central Chouteau County.

* WHEN...Until midnight MDT tonight.

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

Alert: High Wind Warning
Area(s): East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass
Effective: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 6:00 pm
Onset: 2026-05-14 @ 1:45 am -> 2026-05-15 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-05-14 @ 1:45 am
Headline: High Wind Warning issued May 14 at 12:45AM MDT until May 15 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...Westerly winds 40 to 50 mph with gusts up to 90 mph
possible along the Rocky Mountain Front, with gusts up to 75 mph
elsewhere.

* WHERE...The Rocky Mountain Front and adjacent foothills and
plains, Eastern Glacier, Western Toole, and Central Pondera
Counties, and Upper Blackfoot and MacDonald Pass.

* WHEN...Until midnight MDT tonight.

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

Alert: High Wind Warning
Area(s): Gates of the Mountains; Helena Valley
Effective: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 6:00 pm
Onset: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-05-14 @ 1:45 am
Headline: High Wind Warning issued May 14 at 12:45AM MDT until May 14 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...West winds 30 to 40 mph with gusts up to 60 mph.

* WHERE...Gates of the Mountains and Helena Valley.

* WHEN...Until 6 PM MDT this evening.

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

Alert: High Wind Warning
Area(s): Eastern Toole and Liberty; Eastern Pondera and Eastern Teton; Cascade County below 5000ft; Judith Basin County and Judith Gap
Effective: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 6:00 pm
Onset: 2026-05-14 @ 1:45 am -> 2026-05-14 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-05-14 @ 1:45 am
Headline: High Wind Warning issued May 14 at 12:45AM MDT until May 14 at 6:00PM MDT by NWS Great Falls MT
Description: * WHAT...West winds 35 to 45 mph with gusts up to 65 mph.

* WHERE...Eastern Toole and Liberty Counties, Eastern Pondera and
Eastern Teton Counties, Cascade County below 5000ft, and Judith
Basin County and Judith Gap.

* WHEN...Until 6 PM MDT this evening.

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

* ADDITIONAL DETAILS...Areas of blowing dust may create locally
reduced visibility Thursday afternoon.

Alert: High Wind Warning
Area(s): Daniels; Sheridan; Western Roosevelt; McCone; Richland; Dawson; Prairie; Wibaux; Eastern Roosevelt
Effective: 2026-05-14 @ 12:49 am -> 2026-05-14 @ 5:00 pm
Onset: 2026-05-14 @ 12:49 am -> 2026-05-15 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-05-14 @ 12:49 am
Headline: High Wind Warning issued May 13 at 11:49PM MDT until May 15 at 12:00AM MDT by NWS Glasgow MT
Description: * WHAT...West winds 35 to 45 mph with gusts up to 70 mph.

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

* WHEN...Until midnight MDT Thursday Night.

* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.

Alert: High Wind Warning
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; Northern Phillips; Southwest Phillips; Northern Valley
Effective: 2026-05-14 @ 12:49 am -> 2026-05-14 @ 5:00 pm
Onset: 2026-05-14 @ 12:49 am -> 2026-05-15 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-05-14 @ 12:49 am
Headline: High Wind Warning issued May 13 at 11:49PM MDT until May 15 at 12:00AM MDT by NWS Glasgow MT
Description: * WHAT...West winds 35 to 45 mph with gusts up to 70 mph.

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

* WHEN...Until midnight MDT Thursday Night.

* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.

Alert: High Wind Warning
Area(s): Red Lodge Foothills; Southeastern Carbon; Northern Carbon
Effective: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 7:00 am
Onset: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 7:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-05-13 @ 10:52 pm
Headline: High Wind Warning issued May 13 at 9:52PM MDT until May 14 at 6:00AM MDT by NWS Billings MT
Description: * WHAT...West wind gusts up to 60 mph expected.

* WHERE...Northern Carbon, Red Lodge Foothills, and Southeastern
Carbon.

* WHEN...Until 6 AM MDT Thursday.

* IMPACTS...Strong winds may blow down some trees and power lines.
Local power outages are possible. Travel will be difficult for high
profile vehicles. Warm and dry conditions with strong winds could
cause rapid fire spread.

* ADDITIONAL DETAILS...The strongest winds will be through this
evening.

Alert: High Wind Warning
Area(s): Crazy Mountains
Effective: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 7:00 pm
Onset: 2026-05-14 @ 1:00 am -> 2026-05-14 @ 7:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-05-13 @ 10:52 pm
Headline: High Wind Warning issued May 13 at 9:52PM MDT until May 14 at 6:00PM MDT by NWS Billings MT
Description: * WHAT...West winds gusting up to 75 mph expected.

* WHERE...Crazy Mountains.

* WHEN...Until 6 PM MDT Thursday.

* IMPACTS...Recreation in the high country will be impacted by strong
winds.

* ADDITIONAL DETAILS...The strongest winds will be through this
evening.

Alert: Wind Advisory
Area(s): Livingston Area; Beartooth Foothills
Effective: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Onset: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-05-13 @ 10:52 pm
Headline: Wind Advisory issued May 13 at 9:52PM MDT until May 14 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...West winds gusting to 60 mph. Strongest winds through
Thursday morning.

* WHERE...Beartooth Foothills and Livingston Area.

* WHEN...Until 9 PM MDT Thursday.

* IMPACTS...Gusty crosswinds will make travel difficult along
Interstate 90 from Livingston to Big Timber and roads along the
Beartooth Foothills. Warm, dry and windy conditions could cause
rapid fire spread.

Alert: High Wind Warning
Area(s): Musselshell; Northern Stillwater; Golden Valley; Southwestern Yellowstone
Effective: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Onset: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-05-13 @ 10:52 pm
Headline: High Wind Warning issued May 13 at 9:52PM MDT until May 14 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...West winds gusting up to 60 mph expected. Strongest winds
tonight through Thursday morning.

* WHERE...Golden Valley, Musselshell, Northern Stillwater, and
Southwestern Yellowstone.

* WHEN...Until 9 PM MDT Thursday.

* IMPACTS...Strong winds may blow down some trees and power lines.
Local power outages are possible. Travel will be difficult for high
profile vehicles. Warm and dry conditions with strong winds could
cause rapid fire spread.

Alert: High Wind Warning
Area(s): Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland
Effective: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Onset: 2026-05-13 @ 10:52 pm -> 2026-05-14 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-05-13 @ 10:52 pm
Headline: High Wind Warning issued May 13 at 9:52PM MDT until May 14 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...West winds gusting 60 to 70 mph expected. Strongest winds
tonight through Thursday morning.

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

* WHEN...Until 9 PM MDT Thursday.

* IMPACTS...Strong winds may blow down some trees and power lines.
Local power outages are possible. Strong crosswinds will make
travel difficult along Highway 191 from Big Timber through Judith
Gap. Warm and dry conditions with strong winds could cause rapid
fire spread.

Alert: Winter Weather Advisory
Area(s): East Glacier Park Region
Effective: 2026-05-13 @ 2:53 pm -> 2026-05-14 @ 6:00 am
Onset: 2026-05-14 @ 1:00 am -> 2026-05-14 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-05-13 @ 2:53 pm
Headline: Winter Weather Advisory issued May 13 at 1:53PM MDT until May 14 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Wet snow expected. Total snow accumulations between 2 and 6
inches at Logan Pass and other areas of Glacier National Park
above 5500 feet. Winds gusting over 60 mph at times.

* WHERE...East Glacier Park Region Zone.

* WHEN...From midnight tonight to noon MDT Thursday.

* IMPACTS...Plan for dangerous conditions for outdoor recreation and
other activities.

Alert: Red Flag Warning
Area(s): Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties; Dawson/McCone/Prairie/Richland/Wibaux Counties; Northern Valley and Northern Phillips Counties; The Little Rockies; The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties
Effective: 2026-05-13 @ 2:51 pm -> 2026-05-14 @ 7:00 am
Onset: 2026-05-13 @ 2:51 pm -> 2026-05-15 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-05-13 @ 2:51 pm
Headline: Red Flag Warning issued May 13 at 1:51PM MDT until May 15 at 9:00PM MDT by NWS Glasgow MT
Description: * AFFECTED AREA...Fire weather zones 120, 122, 134, 135, 136,
and 137.

* WIND...Southeast at 15 to 30 mph with gusts to 40 mph, then
suddenly switching to the West beginning this evening.

* HUMIDITY...As low as 12 percent today. 20 percent Thursday.

* THUNDERSTORMS...Isolated late-day thunderstorms possible.

* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

Alert: Hydrologic Outlook
Area(s): Big Horn, MT; Carbon, MT; Golden Valley, MT; Park, MT; Stillwater, MT; Sweet Grass, MT; Wheatland, MT; Yellowstone, MT; Sheridan, WY
Effective: 2026-05-13 @ 10:34 am -> 2026-05-14 @ 4:00 pm
Onset: 2026-05-13 @ 10:34 am
Severity: Unknown
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2026-05-13 @ 10:34 am
Headline: Hydrologic Outlook issued May 13 at 9:34AM MDT by NWS Billings MT
Description: ESFBYZ

Recent very warm temperatures has enhanced snowmelt in the mountains
this week, resulting in significantly higher flows on area waterways.
Flooding is not expected at this time due to marginal remaining
snowpack in the middle elevations between 6000 and 8000 feet. Rivers
that have seen increased flows include the Yellowstone, Shields,
Boulder, Stillwater, and Clarks Fork. Some smaller streams flowing
out of the mountains have also experienced rises.

Looking ahead, cooler temperatures are in store for the end of the
week. In fact, a seasonably cold weather system may bring freezing
temperatures at high elevations and potential snowfall this weekend
into early next week. The colder weather will slow or briefly halt
the high elevation snow melt.

Those with interests along foothills waterways should be prepared for
higher water levels, and move property and livestock away from
rivers, streams, and low lying areas.

Runoff may fill culverts, ditches, and storm drains causing water to
flow over foothills roadways potentially causing damage. Do not drive
over flooded roadways, Turn Around Don't Drown.

Recreationists in the mountains and foothills should be prepared for
changing conditions and use extra caution when near waterways. Flows
will be faster, and the water is very cold.

Stay tuned to the forecast. Please report any flooding to local law
enforcement and have them relay the report to the National Weather
Service.

Alert: Winter Weather Advisory
Area(s): West Glacier Region
Effective: 2026-05-13 @ 4:15 am -> 2026-05-13 @ 12:15 pm
Onset: 2026-05-14 @ 1:00 am -> 2026-05-14 @ 4:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-05-13 @ 4:15 am
Headline: Winter Weather Advisory issued May 13 at 3:15AM MDT until May 14 at 3:00PM MDT by NWS Missoula MT
Description: * WHAT...Wet snow expected above 5000 feet. Total snow accumulations
of 2 to 5 inches. Winds gusting as high as 50 mph.

* WHERE...Glacier National Park

* WHEN...From midnight tonight to 3 PM MDT Thursday.

* IMPACTS...Plan on hazardous conditions in the backcountry. Gusty
winds could bring down tree branches.