Headline:
Special Weather Statement issued August 15 at 5:59PM MDT by NWS Great Falls MT
Event:
Special Weather Statement
Urgency:
Expected
Effective:
August 15, 2026 - 4:59pm
Expires:
August 15, 2026 - 5:30pm
Description:
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.
Instruction:
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.
Area Description:
Canyon Ferry Area; Missouri Headwaters
Forcast Office:
NWS Great Falls MT
Sender:
w-nws.webmaster@noaa.gov