Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): Eastern Toole and Liberty; Hill County; Northern Blaine County; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains
Effective: 2026-09-25 @ 2:17 pm -> 2026-09-25 @ 8:30 pm
Onset: 2026-09-25 @ 2:17 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-09-25 @ 2:17 pm
Headline: Special Weather Statement issued September 25 at 1:17PM MDT by NWS Great Falls MT
Description: Gusty to strong westerly winds will develop over much of central
and north-central Montana by this evening. The combination of the
frontal passage with isolated shower and thunderstorm activity
will result in brief instances of wind gusts exceeding 50 mph.

These winds may cause more damage to trees and power lines than
what is normally observed due to most trees being fully leafed out
and some trees being weakened by previous storms. Additionally,
any damaged tree branches may break loose and become projectiles.

Pedestrians and those outdoors should watch for flying debris and
avoid being near trees if possible during times of stronger
winds. Also, those traveling along north to south oriented
roadways should be prepared for strong cross winds.

Alert: High Wind Warning
Area(s): Bears Paw Mountains and Southern Blaine
Effective: 2026-09-25 @ 1:31 pm -> 2026-09-26 @ 4:45 am
Onset: 2026-09-25 @ 9:00 pm -> 2026-09-26 @ 7:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-09-25 @ 1:31 pm
Headline: High Wind Warning issued September 25 at 12:31PM MDT until September 26 at 6:00AM MDT by NWS Great Falls MT
Description: * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...Bears Paw Mountains and Southern Blaine.

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

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

Alert: High Wind Warning
Area(s): Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern High Plains
Effective: 2026-09-25 @ 1:31 pm -> 2026-09-26 @ 4:45 am
Onset: 2026-09-25 @ 6:00 pm -> 2026-09-26 @ 1:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-09-25 @ 1:31 pm
Headline: High Wind Warning issued September 25 at 12:31PM MDT until September 26 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Westerly winds 30 to 50 mph, with gusts up to 70 mph
expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera,
Northern High Plains, and Southern High Plains.

* WHEN...From 5 PM this afternoon to noon MDT Saturday.

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

Alert: Wind Advisory
Area(s): Kootenai/Cabinet Region; Flathead/Mission Valleys
Effective: 2026-09-25 @ 8:17 am -> 2026-09-26 @ 1:00 am
Onset: 2026-09-25 @ 3:00 pm -> 2026-09-26 @ 1:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-09-25 @ 8:17 am
Headline: Wind Advisory issued September 25 at 7:17AM MDT until September 26 at 12:00AM MDT by NWS Missoula MT
Description: * WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph
expected.

* WHERE...Flathead/Mission Valleys and Kootenai/Cabinet Region.

* WHEN...From 2 PM this afternoon to midnight MDT tonight.

* 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: 2026-09-25 @ 8:17 am -> 2026-09-26 @ 1:00 am
Onset: 2026-09-25 @ 3:00 pm -> 2026-09-26 @ 1:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-09-25 @ 8:17 am
Headline: Wind Advisory issued September 25 at 7:17AM MDT until September 26 at 12:00AM MDT by NWS Missoula MT
Description: * WHAT...West winds 15 to 25 mph with gusts up to 45 mph expected.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...From 2 PM this afternoon to midnight MDT tonight.

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

* ADDITIONAL DETAILS...Strongest winds are expected west of Highway
93 through the Bitterroot valley.

Alert: Lake Wind Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
Effective: 2026-09-25 @ 2:04 am -> 2026-09-26 @ 2:15 am
Onset: 2026-09-25 @ 9:00 am -> 2026-09-26 @ 10:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-09-25 @ 2:04 am
Headline: Lake Wind Advisory issued September 25 at 1:04AM MDT until September 26 at 9:00AM MDT by NWS Glasgow MT
Description: * WHAT...South winds 15 to 25 mph with gusts up to 40 mph expected.

* WHERE...Fort Peck Lake

* WHEN...From 8 AM this morning to 9 AM MDT Saturday.

* IMPACTS...Strong lake winds could produce rough waves which can
overturn or swamp small craft.


* ADDITIONAL DETAILS...Waves up to 4 feet will be possible.

TOP