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Active official alertUpdated

Dense Fog Advisory for Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern High Plains +3 more

Official alert fields

What you need to know

Effective
Ends or expires
Official severity
Moderate
Official urgency
Expected
Official certainty
Likely

What is happening

What: Visibility one quarter to one half mile in dense freezing fog. Impacts: Low visibility could make driving conditions hazardous. Where: Gates of the Mountains, Cascade County below 5000ft, Eastern Glacier, Western Toole, and Central Pondera, Eastern Pondera and Eastern Teton, Northern High Plains, and Southern...

What the bulletin says to do

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Read official NWS bulletin

Full official description

Bulletin details

* WHAT...Visibility one quarter to one half mile in dense freezing fog. * WHERE...Gates of the Mountains, Cascade County below 5000ft, Eastern Glacier, Western Toole, and Central Pondera, Eastern Pondera and Eastern Teton, Northern High Plains, and Southern High Plains. * WHEN...Until noon MDT Friday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Some roadways or bridges could be frost covered and slippery.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

3 captured
  1. Update

    Dense Fog Advisory issued October 29 at 2:43PM MDT until October 30 at 12:00PM MDT by NWS Great Falls MT

    Official revision
  2. Update

    Dense Fog Advisory issued October 29 at 12:56PM MDT until October 29 at 3:00PM MDT by NWS Great Falls MT

    Official revision
  3. Alert

    Dense Fog Advisory issued October 29 at 11:51AM MDT until October 29 at 3:00PM 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
Update
Last collected
Methodology and corrections