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Home Return to list Dense Fog Advisory 0003 Issued by the Billings Forecast Office
Action: New Issued At: 2026-09-21 05:57:37 910 WWUS75 KBYZ 211057 NPWBYZ URGENT - WEATHER MESSAGE National Weather Service Billings MT 457 AM MDT Mon Sep 21 2026 MTZ029-030-034-042-057-058-063-138-141-170-172-173-228-235-WYZ199- 211600- /O.NEW.KBYZ.FG.Y.0003.260921T1057Z-260921T1600Z/ 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- Including the locations of Joliet, Pryor, Fromberg, Harlowton, Hardin, Billings, Ryegate, Big Timber, Hysham, Sheridan, Judith Gap, Lodge Grass, Roundup, Columbus, Absarokee, Lame Deer, Lavina, Crow Agency, Melville, Pompeys Pillar, and Custer 457 AM MDT Mon Sep 21 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM MDT THIS MORNING... * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you. && $$ Additional graphics for this hazard can be found at http://www.weather.gov/billings JKL Action: Expired Issued At: 2026-09-21 10:48:48 027 WWUS75 KBYZ 211548 NPWBYZ URGENT - WEATHER MESSAGE National Weather Service Billings MT 948 AM MDT Mon Sep 21 2026 MTZ029-030-034-042-057-058-063-138-141-170-172-173-228-235-WYZ199- 211700- /O.EXP.KBYZ.FG.Y.0003.000000T0000Z-260921T1600Z/ Musselshell-Treasure-Northern Stillwater-Golden Valley-Northern Big Horn-Southern Rosebud-Judith Gap-Southern Big Horn-Northern Sweet Grass-Northern Carbon-Melville Foothills-Northeastern Yellowstone-Southern Wheatland-Southwestern Yellowstone-Sheridan Foothills- Including the locations of Judith Gap, Harlowton, Columbus, Absarokee, Billings, Pompeys Pillar, Joliet, Pryor, Roundup, Lodge Grass, Hysham, Crow Agency, Lavina, Fromberg, Ryegate, Big Timber, Custer, Melville, Lame Deer, Hardin, and Sheridan 948 AM MDT Mon Sep 21 2026 ...DENSE FOG ADVISORY WILL EXPIRE AT 10 AM MDT THIS MORNING... Dense fog has ended for much of the area. Patches of fog reducing visibility may linger through the late morning hours, especially along US-191 from Big Timber through Judith Gap. $$ Additional graphics for this hazard can be found at http://www.weather.gov/billings Matos | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||