Headline:
Dense Fog Advisory issued September 21 at 4:57AM MDT until September 21 at 10:00AM MDT by NWS Billings MT
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
September 21, 2026 - 3:57am
Expires:
September 21, 2026 - 9:00am
Description:
* WHAT...Areas of dense fog producing visibility one quarter mile or
less.
* WHERE...Portions of central, south central, and southeast Montana
and north central Wyoming.
* WHEN...Until 10 AM MDT this morning.
* IMPACTS...Morning travelers can expect to encounter areas of very
poor visibility. This includes portions of Interstate 90 from Big
Timber to Billings, Hardin and Sheridan. Portions of Interstate 94,
US-191, and US-212 will also be impacted. Please use caution and
allow extra time for your morning commute.
* ADDITIONAL DETAILS...Fog will slowly dissipate in the mid to late
morning.
Instruction:
If driving, slow down, use your low beam headlights, and leave plenty
of distance ahead of you.
Area Description:
Musselshell; Treasure; Northern Stillwater; Golden Valley; Northern Big Horn; Southern Rosebud; Judith Gap; Southern Big Horn; Northern Sweet Grass; Northern Carbon; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Sheridan Foothills
Forcast Office:
NWS Billings MT
Sender:
w-nws.webmaster@noaa.gov