Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): Powder River; Sheridan Foothills
Effective: 2026-06-20 @ 8:15 pm -> 2026-06-20 @ 9:00 pm
Onset: 2026-06-20 @ 8:15 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Billings MT on 2026-06-20 @ 8:15 pm
Headline: Special Weather Statement issued June 20 at 7:15PM MDT by NWS Billings MT
Description: At 715 PM MDT, Doppler radar was tracking strong thunderstorms 42
miles southwest of Biddle, or 42 miles east of Sheridan, moving east
at 10 mph.

HAZARD...Wind gusts up to 50 mph, half inch size hail, and heavy
rain.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.

Locations impacted include...
Moorhead, Arvada and Leiter.

Alert: Lake Wind Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
Effective: 2026-06-20 @ 3:53 pm -> 2026-06-21 @ 4:00 am
Onset: 2026-06-20 @ 3:53 pm -> 2026-06-21 @ 4:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-20 @ 3:53 pm
Headline: Lake Wind Advisory issued June 20 at 2:53PM MDT until June 21 at 3:00AM MDT by NWS Glasgow MT
Description: * WHAT...East winds 10 to 20 mph with gusts up to 35 mph, with
strongest winds near the dam.

* WHERE...Fort Peck Lake.

* WHEN...Until 3 AM MDT Sunday.

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

* ADDITIONAL DETAILS...Wave heights up to 3 feet are expected.