Active official alertUpdated
Special Weather Statement for Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass +4 more
Official alert fields
What you need to know
- Applies to
- Canyon Ferry Area, Elkhorn and Boulder Mountains, Gates of the Mountains, Helena Valley, Southern High Plains, Southern Rocky Mountain Front, Upper Blackfoot and MacDonald Pass
- Effective
- Ends or expires
- Official severity
- Moderate
- Official urgency
- Expected
- Official certainty
- Observed
What is happening
Patchy dense fog has developed around Helena, Lincoln, Craig and Augusta this morning. Visibility is below a half mile in some areas. Those traveling early this morning should be alert for quickly changing visibility conditions. Reminder, reduce your driving speeds in areas of poor visibility.
What the bulletin says to do
No separate action instruction was included in this NWS record. Read the complete official bulletin and follow local authorities.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Special Weather Statement issued October 25 at 3:22AM 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