Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
917 AM MST Fri Jan 23 2026
MTZ029-030-034-036-042-057-058-063-138-141-169-170-172-173-228-235-
WYZ199-240000-
/O.CON.KBYZ.WW.Y.0002.000000T0000Z-260124T0000Z/
Musselshell-Treasure-Northern Stillwater-Powder River-Golden
Valley-Northern Big Horn-Southern Rosebud-Judith Gap-Southern Big
Horn-Northern Sweet Grass-Bighorn Canyon-Northern Carbon-Melville
Foothills-Northeastern Yellowstone-Southern Wheatland-
Southwestern Yellowstone-Sheridan Foothills-
Including the locations of Sheridan, Powderville, Pryor, Big Timber,
Melville, Birney, Busby, Crow Agency, Roundup, Lavina, Columbus,
Musselshell, Ranchester, Bighorn, Hysham, Lame Deer, Ryegate,
Harlowton, Rapelje, Fromberg, Custer, Twodot, Fort Smith, Dayton,
Park City, Ashland, Reed Point, Wyola, Absarokee, Broadview, Pompeys
Pillar, Lodge Grass, Shawmut, Laurel, Melstone, Sonnette, Billings,
Joliet, Judith Gap, Huntley, Hardin, Broadus, Big Horn, Clearmont,
and Biddle
917 AM MST Fri Jan 23 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...Snow occurring. Additional snow accumulations up to one
inch.
* WHERE...Portions of central, south central, and southeast Montana
and north central Wyoming.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...Plan on snow covered or partially snow packed roads, and
areas of reduced visibility.
* ADDITIONAL DETAILS...Snow will taper off early this afternoon from
north to south.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. For the latest road
conditions, call 5 1 1.
&&
$$
Additional graphics for this hazard can be found at
http://www.weather.gov/billings
Chambers
Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
146 AM MST Fri Jan 23 2026
MTZ304-310-314-318-231800-
/O.EXB.KTFX.CW.Y.0001.000000T0000Z-260123T1800Z/
Eastern Toole and Liberty-Western and Central Chouteau County-
Fergus County below 4500ft-Snowy and Judith Mountains-
Including the following locations: Shelby, Fort Benton, Chester,
Lewistown, Carter, Devon, Hilger, Floweree, Whitlash, Galata,
Lothair, and Joplin
146 AM MST Fri Jan 23 2026
...COLD WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING...
* WHAT...Very cold wind chills as low as 30 below.
* WHERE...Eastern Toole and Liberty Counties, Western and Central
Chouteau County, Fergus County below 4500ft, and Snowy and Judith
Mountains.
* WHEN...Until 11 AM MST this morning.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 15 minutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
146 AM MST Fri Jan 23 2026
MTZ305-306-311-231800-
/O.EXT.KTFX.CW.Y.0001.000000T0000Z-260123T1800Z/
Hill County-Northern Blaine County-Bears Paw Mountains and
Southern Blaine-
Including the following locations: Rocky Boy, Fort Belknap,
Zurich, Havre, Chinook, Hogeland, and Harlem
146 AM MST Fri Jan 23 2026
...COLD WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST THIS
MORNING...
* WHAT...Very cold wind chills as low as 35 below.
* WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and
Northern Blaine County.
* WHEN...Until 11 AM MST this morning.
* IMPACTS...The dangerously cold wind chills as low as 35 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
&&
$$
RG
Air Stagnation Advisory
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
456 AM MST Fri Jan 23 2026
IDZ011>014-016-028-033-ORZ061>064-231900-
/O.EXT.KBOI.AS.Y.0001.000000T0000Z-260123T1900Z/
West Central Mountains-Lower Treasure Valley-Boise Mountains-
Upper Treasure Valley-Western Magic Valley-Camas Prairie-Upper
Weiser River-Harney County-Baker County-Malheur County-Oregon
Lower Treasure Valley-
Including the cities of New Princeton, Malheur City, Pine,
Prairie, Baker, Corral, McCall, Cascade, Soldier, Diamond,
Cuprum, Mesa, Fairfield, Nampa, Nyssa, Anderson Dam, Warm Lake,
Crane, Selby, Burns, Ola, Big Creek, Ontario, Indian Valley,
Buchanan, Council, Venator, Boise, Cambridge, Caldwell, Dunnean,
Hill City, Fruitvale, Goodrich, Bear, Glendale, Twin Falls, and
Blaine
456 AM MST Fri Jan 23 2026 /356 AM PST Fri Jan 23 2026/
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL NOON MST /11 AM PST/
TODAY...
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of south central and southwest Idaho and
northeast and southeast Oregon.
* WHEN...Until noon MST /11 AM PST/ today.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
&&
$$
KA
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
258 AM MST Fri Jan 23 2026
WYZ001>020-022>030-241400-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
258 AM MST Fri Jan 23 2026
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Rest of Tonight.
Much colder today with areas of light snow, especially East of the
Continental Divide.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday and Sunday...The coldest temperatures so far this
calendar year continue.
Saturday night and Sunday...Another chance of light snow, mainly
East of the Divide.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
