Special Weather Statement for Yellowstone National Park
Official alert fields
What you need to know
- Applies to
- Yellowstone National Park
- Effective
- Ended
- Official severity
- Moderate
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
At 308 PM MDT, Doppler radar was tracking a strong thunderstorm over Gallatin Lake, which is 11 miles southwest of Mammoth, 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...
What the bulletin says to do
If outdoors, consider seeking shelter inside a building. 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. Persons in campgrounds should consider seeking sturdy shelter until this storm passes.
Full official description
Bulletin details
At 308 PM MDT, Doppler radar was tracking a strong thunderstorm over Gallatin Lake, which is 11 miles southwest of Mammoth, 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... Mammoth and Osprey Falls around 325 PM MDT.
Lifecycle record
Official revisions
- Alert
Special Weather Statement issued August 17 at 3:08PM 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.
- CAP status
- Actual
- Message type
- Alert
- Last collected