Special Weather Statement for Canyon Ferry Area; Missouri Headwaters
Official alert fields
What you need to know
- Applies to
- Canyon Ferry Area, Missouri Headwaters
- Effective
- Ended
- Official severity
- Moderate
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
At 558 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles north of Harrison, or 28 miles southeast of Boulder, moving northeast at 25 mph. HAZARD...Wind gusts up to 40 mph and penny size 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. 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.
Full official description
Bulletin details
At 558 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles north of Harrison, or 28 miles southeast of Boulder, moving northeast at 25 mph. HAZARD...Wind gusts up to 40 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Three Forks, Willow Creek, Lewis And Clark Caverns State Park, and Cardwell.
Lifecycle record
Official revisions
- Alert
Special Weather Statement issued August 15 at 5:59PM MDT by NWS Great Falls MT
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Great Falls MT. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected