Moderate Extreme Weather ● Active
Dense Fog Advisory issued October 29 at 5:46AM MDT until October 29 at 10:00AM MDT by NWS Billings MT, United States of America
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* WHAT...Areas of very poor visibility due to dense fog.
* WHERE...Golden Valley and Musselshell.
* WHEN...Until 10 AM MDT this morning.
* IMPACTS...Expect visibility of a quarter mile or less in spots.
Travel on US-12 from Lavina to Roundup and Musselshell will be
impacted by fog. Some roads and sidewalks could be a bit icy.
Please allow extra time for your morning commute.
* ADDITIONAL DETAILS...Expect fog to dissipate between 9 and 11 am.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Musselshell; Golden Valley |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-29T10:00:00-06:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 54 minutes ago (Oct 29, 2026 11:47 UTC) · we last heard from WMO Alert Hub (national weather services) 23 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Musselshell; Golden Valley
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
When thunder roars, go indoors — lightning risk outdoors, in vehicles, and first aid for strike victims.
Open Lightning Safety Guide →Earlier extreme weather events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
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