Yellowstone National Park, Wyoming

Regional Weather Alerts


Alert: Special Weather Statement
Area(s): Central and Southeast Phillips; Petroleum; Garfield
Effective: 2026-08-18 @ 8:34 pm -> 2026-08-18 @ 9:30 pm
Onset: 2026-08-18 @ 8:34 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-08-18 @ 8:34 pm
Headline: Special Weather Statement issued August 18 at 7:34PM MDT by NWS Glasgow MT
Description: At 734 PM MDT, Doppler radar was tracking a strong thunderstorm near
U L Bend Rec Area, or 40 miles southeast of Zortman, moving southeast
at 40 mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

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...
Fourchette, Devils Creek Rec Area, U L Bend Rec Area, Edwards,
Crooked Creek Rec Area, Brusett, and Steve Fork.