Special Weather Statement for Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains +4 more
Official alert fields
What you need to know
- Applies to
- Big Belt, Bridger and Castle Mountains, Canyon Ferry Area, Elkhorn and Boulder Mountains, Gates of the Mountains, Helena Valley, Little Belt and Highwood Mountains, Upper Blackfoot and MacDonald Pass
- Effective
- Ended
- Official severity
- Moderate
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
At 1118 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 14 miles west of Helena to near Basin to 14 miles west of Boulder. Movement was east at 45 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around...
What the bulletin says to do
If on or near Canyon Ferry Reservoir, get out of the water and move indoors or inside a vehicle. Remember, lightning can strike out to 10 miles from the parent thunderstorm. If you can hear thunder, you are close enough to be struck by lightning. Move to safe shelter now! Do not be caught on the water in a thunderstorm. Persons in campgrounds should consider seeking sturdy shelter until these storms pass.
Full official description
Bulletin details
At 1118 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 14 miles west of Helena to near Basin to 14 miles west of Boulder. Movement was east at 45 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Helena, Townsend, Boulder, East Helena, Montana City, Basin, Wickes, York, Rimini, Alhambra, Corbin, Spring Meadow Lake State Park, Austin, Elkhorn State Park, Winston, Silos, Clancy, Black Sandy State Park, Jefferson City, and Goose Bay.
Lifecycle record
Official revisions
- Alert
Special Weather Statement issued July 23 at 11:19PM 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