Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: High Wind Watch
Area(s): Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys
Effective: 2026-06-09 @ 2:28 pm -> 2026-06-10 @ 7:00 am
Onset: 2026-06-10 @ 4:00 am -> 2026-06-11 @ 4:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2026-06-09 @ 2:28 pm
Headline: High Wind Watch issued June 9 at 1:28PM MDT until June 11 at 3:00AM MDT by NWS Great Falls MT
Description: * WHAT...West winds 25 to 40 mph with gusts up to 60 mph possible.

* WHERE...Big Belt, Bridger and Castle Mountains, Gates of the
Mountains, Helena Valley, Little Belt and Highwood Mountains,
Meagher County Valleys, Upper Blackfoot and MacDonald Pass, Fergus
County below 4500ft, and Judith Basin and Judith Gap Counties.

* WHEN...From late tonight through late Wednesday night.

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

* ADDITIONAL DETAILS...Two rounds of strong winds are expected with
this event. The first round will arrive early Wednesday morning and
last through the early afternoon. There will be a short lull in the
mid-afternoon hours before the wind picks up again Wednesday
evening and lasts through early Thursday morning.

Alert: Lake Wind Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
Effective: 2026-06-09 @ 11:34 am -> 2026-06-10 @ 7:00 am
Onset: 2026-06-09 @ 3:00 pm -> 2026-06-11 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-09 @ 11:34 am
Headline: Lake Wind Advisory issued June 9 at 10:34AM MDT until June 11 at 9:00PM MDT by NWS Glasgow MT
Description: * WHAT...West winds 15 to 25 mph with gusts up to 45 mph expected.

* WHERE...Central and Southeast Phillips, Central and Southern
Valley, Garfield, McCone, and Petroleum Counties.

* WHEN...From 2 PM this afternoon to 9 PM MDT Thursday.

* IMPACTS...Strong winds and rough waves on area lakes will create
hazardous conditions for small craft.

* ADDITIONAL DETAILS...Strongest winds are expected Wednesday
afternoon.

Alert: Special Weather Statement
Area(s): West Glacier Region
Effective: 2026-06-09 @ 11:15 am -> 2026-06-10 @ 7:00 pm
Onset: 2026-06-09 @ 11:15 am
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-09 @ 11:15 am
Headline: Special Weather Statement issued June 9 at 10:15AM MDT by NWS Missoula MT
Description: Widespread snow will impact the Glacier Park region above 5,000
feet tonight through Wednesday as a cold system moves through the
area. Confidence is high for accumulating snow, with most areas
seeing at least 2 to 4 inches of snow above 5,000 feet. Isolated
snow amounts up to 12 inches will impact higher mountain peaks
above 6,000 feet.

Those heading into the backcountry and higher elevations should
prepare for winter-like conditions. An elevated risk will exist
for hypothermia.