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Special Weather Statement for Yellowstone National Park

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Effective
Ended
Official severity
Moderate
Official urgency
Expected
Official certainty
Observed

What is happening

At 543 PM MDT, Doppler radar was tracking a strong thunderstorm near Gallatin Lake, which is 11 miles northeast of West Yellowstone, moving east at 30 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured...

What the bulletin says to do

If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. Persons in campgrounds should consider seeking sturdy shelter until this storm passes.

Read official NWS bulletin

Full official description

Bulletin details

At 543 PM MDT, Doppler radar was tracking a strong thunderstorm near Gallatin Lake, which is 11 miles northeast of West Yellowstone, moving east at 30 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. This strong thunderstorm will be near... Gallatin Lake around 550 PM MDT. Grizzly Lake around 600 PM MDT. Other locations in the path of this storm include Obsidian Cliff and Twin Lakes.

Lifecycle record

Official revisions

1 captured
  1. Alert

    Special Weather Statement issued August 23 at 5:43PM MDT by NWS Riverton WY

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Riverton WY. This page reorganizes official fields and does not add a forecast or expand the affected area.

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Actual
Message type
Alert
Last collected
Methodology and corrections