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Home Return to list Dense Fog Advisory 0012 Issued by the Great Falls Forecast Office
Action: New Issued At: 2025-12-24 14:53:52 760 WWUS75 KTFX 242053 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 153 PM MST Wed Dec 24 2025 MTZ325-250300- /O.CON.KTFX.HW.W.0035.000000T0000Z-251225T0300Z/ Madison River Valley- Including the following locations: Ennis, Norris, Cameron, Jeffers, and McAllister 153 PM MST Wed Dec 24 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Southerly winds 35 to 45 mph, with gusts up to 65 mph expected. * WHERE...Madison River Valley. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. && $$ MTZ302>305-308>310-312-313-250600- /O.NEW.KTFX.FG.Y.0012.251224T2053Z-251225T0600Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Southern High Plains-Eastern Pondera and Eastern Teton-Western and Central Chouteau County-Cascade County below 5000ft-Judith Basin County and Judith Gap- Including the following locations: Geyser, Whitlash, Browning, Dupuyer, Brady, Heart Butte, Galata, Raynesford, Devon, Choteau, Conrad, Moccasin, Santa Rita, Chester, Cut Bank, Stanford, Benchland, Great Falls, Floweree, Carter, Fort Benton, Ethridge, Shelby, Havre, Ledger, Hobson, Bynum, Joplin, Lothair, Pendroy, and Windham 153 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility less than a quarter of a mile in dense freezing fog. * WHERE...Much of North Central MT. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will create some minor ice accumulations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Brusda Action: Continued Issued At: 2025-12-24 19:37:59 509 WWUS75 KTFX 250137 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 637 PM MST Wed Dec 24 2025 MTZ325-250300- /O.CON.KTFX.HW.W.0035.000000T0000Z-251225T0300Z/ Madison River Valley- Including the following locations: Jeffers, Norris, Ennis, Cameron, and McAllister 637 PM MST Wed Dec 24 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Southerly winds 35 to 45 mph, with gusts up to 65 mph expected. * WHERE...Madison River Valley. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest winds are likely to occur this afternoon into the early evening hours today. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. && $$ MTZ306-311-314-250600- /O.EXA.KTFX.FG.Y.0012.000000T0000Z-251225T0600Z/ Northern Blaine County-Bears Paw Mountains and Southern Blaine- Fergus County below 4500ft- Including the following locations: Harlem, Chinook, Hogeland, Lewistown, Hilger, Zurich, Fort Belknap, and Rocky Boy 637 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility less than a quarter of a mile in dense freezing fog. * WHERE...Bears Paw Mountains and Southern Blaine, Fergus County below 4500ft, and Northern Blaine County. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will create some minor ice accumulations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ MTZ302>305-308>310-312-313-250600- /O.CON.KTFX.FG.Y.0012.000000T0000Z-251225T0600Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Southern High Plains-Eastern Pondera and Eastern Teton-Western and Central Chouteau County-Cascade County below 5000ft-Judith Basin County and Judith Gap- Including the following locations: Cut Bank, Devon, Conrad, Benchland, Brady, Havre, Raynesford, Pendroy, Shelby, Joplin, Dupuyer, Ethridge, Santa Rita, Fort Benton, Geyser, Stanford, Windham, Great Falls, Hobson, Heart Butte, Floweree, Galata, Lothair, Carter, Ledger, Chester, Browning, Whitlash, Moccasin, Bynum, and Choteau 637 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility less than a quarter of a mile in dense freezing fog. * WHERE...Much of North Central MT. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will create some minor ice accumulations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Ludwig Action: Area Extended Issued At: 2025-12-24 19:37:59 509 WWUS75 KTFX 250137 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 637 PM MST Wed Dec 24 2025 MTZ325-250300- /O.CON.KTFX.HW.W.0035.000000T0000Z-251225T0300Z/ Madison River Valley- Including the following locations: Jeffers, Norris, Ennis, Cameron, and McAllister 637 PM MST Wed Dec 24 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Southerly winds 35 to 45 mph, with gusts up to 65 mph expected. * WHERE...Madison River Valley. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest winds are likely to occur this afternoon into the early evening hours today. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. && $$ MTZ306-311-314-250600- /O.EXA.KTFX.FG.Y.0012.000000T0000Z-251225T0600Z/ Northern Blaine County-Bears Paw Mountains and Southern Blaine- Fergus County below 4500ft- Including the following locations: Harlem, Chinook, Hogeland, Lewistown, Hilger, Zurich, Fort Belknap, and Rocky Boy 637 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility less than a quarter of a mile in dense freezing fog. * WHERE...Bears Paw Mountains and Southern Blaine, Fergus County below 4500ft, and Northern Blaine County. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will create some minor ice accumulations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ MTZ302>305-308>310-312-313-250600- /O.CON.KTFX.FG.Y.0012.000000T0000Z-251225T0600Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Southern High Plains-Eastern Pondera and Eastern Teton-Western and Central Chouteau County-Cascade County below 5000ft-Judith Basin County and Judith Gap- Including the following locations: Cut Bank, Devon, Conrad, Benchland, Brady, Havre, Raynesford, Pendroy, Shelby, Joplin, Dupuyer, Ethridge, Santa Rita, Fort Benton, Geyser, Stanford, Windham, Great Falls, Hobson, Heart Butte, Floweree, Galata, Lothair, Carter, Ledger, Chester, Browning, Whitlash, Moccasin, Bynum, and Choteau 637 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility less than a quarter of a mile in dense freezing fog. * WHERE...Much of North Central MT. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will create some minor ice accumulations. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Ludwig Action: Continued Issued At: 2025-12-24 20:50:31 282 WWUS75 KTFX 250250 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 750 PM MST Wed Dec 24 2025 MTZ325-250400- /O.EXP.KTFX.HW.W.0035.000000T0000Z-251225T0300Z/ Madison River Valley- Including the following locations: Jeffers, Norris, Ennis, Cameron, and McAllister 750 PM MST Wed Dec 24 2025 ...HIGH WIND WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... Winds have subsided and no longer pose a threat to life and property. $$ MTZ302>306-308>314-250600- /O.CON.KTFX.FG.Y.0012.000000T0000Z-251225T0600Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Northern Blaine County-Southern High Plains-Eastern Pondera and Eastern Teton- Western and Central Chouteau County-Bears Paw Mountains and Southern Blaine-Cascade County below 5000ft-Judith Basin County and Judith Gap-Fergus County below 4500ft- Including the following locations: Harlem, Cut Bank, Devon, Conrad, Hogeland, Benchland, Brady, Havre, Raynesford, Pendroy, Shelby, Joplin, Dupuyer, Lewistown, Ethridge, Santa Rita, Fort Benton, Geyser, Stanford, Windham, Great Falls, Hobson, Heart Butte, Chinook, Floweree, Hilger, Galata, Lothair, Carter, Ledger, Chester, Browning, Whitlash, Moccasin, Zurich, Fort Belknap, Bynum, Choteau, and Rocky Boy 750 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Visibility a quarter mile or less in dense freezing fog. * WHERE...A portion of north central Montana. * WHEN...Until 11 PM MST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. Icy roads and sidewalks are possible due to a slow buildup of ice. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ Ludwig Action: Time Extended Issued At: 2025-12-24 23:36:05 299 WWUS75 KTFX 250535 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 1035 PM MST Wed Dec 24 2025 MTZ302>306-308>314-251000- /O.EXT.KTFX.FG.Y.0012.000000T0000Z-251225T1000Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Northern Blaine County-Southern High Plains-Eastern Pondera and Eastern Teton- Western and Central Chouteau County-Bears Paw Mountains and Southern Blaine-Cascade County below 5000ft-Judith Basin County and Judith Gap-Fergus County below 4500ft- Including the following locations: Browning, Moccasin, Chester, Ethridge, Geyser, Heart Butte, Hobson, Whitlash, Great Falls, Hogeland, Zurich, Floweree, Pendroy, Benchland, Harlem, Lewistown, Devon, Stanford, Ledger, Shelby, Fort Belknap, Carter, Bynum, Chinook, Rocky Boy, Havre, Hilger, Santa Rita, Choteau, Windham, Dupuyer, Galata, Fort Benton, Cut Bank, Brady, Raynesford, Conrad, Lothair, and Joplin 1035 PM MST Wed Dec 24 2025 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 3 AM MST THURSDAY... * WHAT...Variable visibility down to a quarter mile or less in dense freezing fog. * WHERE...A portion of north central Montana. * WHEN...Until 3 AM MST Thursday. * IMPACTS...Low visibility and frost deposition and or freezing rain and drizzle could make driving conditions hazardous. * ADDITIONAL DETAILS...The fog should begin to lift in a west to east fashion through 3 AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ RG Action: Time Extended Issued At: 2025-12-25 03:14:40 568 WWUS75 KTFX 250914 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 214 AM MST Thu Dec 25 2025 MTZ302>306-308-309-311>313-251015- /O.CAN.KTFX.FG.Y.0012.000000T0000Z-251225T1000Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Northern Blaine County-Southern High Plains-Eastern Pondera and Eastern Teton- Bears Paw Mountains and Southern Blaine-Cascade County below 5000ft-Judith Basin County and Judith Gap- Including the following locations: Browning, Moccasin, Chester, Ethridge, Geyser, Heart Butte, Hobson, Whitlash, Great Falls, Hogeland, Zurich, Pendroy, Benchland, Harlem, Devon, Stanford, Ledger, Shelby, Fort Belknap, Bynum, Chinook, Rocky Boy, Havre, Santa Rita, Choteau, Windham, Dupuyer, Galata, Cut Bank, Brady, Raynesford, Conrad, Lothair, and Joplin 214 AM MST Thu Dec 25 2025 ...DENSE FOG ADVISORY IS CANCELLED... Widespread dense fog is no longer expected. $$ MTZ310-314-251600- /O.EXT.KTFX.FG.Y.0012.000000T0000Z-251225T1600Z/ Western and Central Chouteau County-Fergus County below 4500ft- Including the following locations: Floweree, Fort Benton, Carter, Hilger, and Lewistown 214 AM MST Thu Dec 25 2025 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Variable visibility as low as a quarter mile at times. * WHERE...Fergus County below 4500ft and Western and Central Chouteau County. * WHEN...Until 9 AM MST this morning. * IMPACTS...Low visibility and frost deposition and or freezing rain and drizzle could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ RG Action: Cancelled Issued At: 2025-12-25 03:14:40 568 WWUS75 KTFX 250914 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 214 AM MST Thu Dec 25 2025 MTZ302>306-308-309-311>313-251015- /O.CAN.KTFX.FG.Y.0012.000000T0000Z-251225T1000Z/ Northern High Plains-Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole and Liberty-Hill County-Northern Blaine County-Southern High Plains-Eastern Pondera and Eastern Teton- Bears Paw Mountains and Southern Blaine-Cascade County below 5000ft-Judith Basin County and Judith Gap- Including the following locations: Browning, Moccasin, Chester, Ethridge, Geyser, Heart Butte, Hobson, Whitlash, Great Falls, Hogeland, Zurich, Pendroy, Benchland, Harlem, Devon, Stanford, Ledger, Shelby, Fort Belknap, Bynum, Chinook, Rocky Boy, Havre, Santa Rita, Choteau, Windham, Dupuyer, Galata, Cut Bank, Brady, Raynesford, Conrad, Lothair, and Joplin 214 AM MST Thu Dec 25 2025 ...DENSE FOG ADVISORY IS CANCELLED... Widespread dense fog is no longer expected. $$ MTZ310-314-251600- /O.EXT.KTFX.FG.Y.0012.000000T0000Z-251225T1600Z/ Western and Central Chouteau County-Fergus County below 4500ft- Including the following locations: Floweree, Fort Benton, Carter, Hilger, and Lewistown 214 AM MST Thu Dec 25 2025 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Variable visibility as low as a quarter mile at times. * WHERE...Fergus County below 4500ft and Western and Central Chouteau County. * WHEN...Until 9 AM MST this morning. * IMPACTS...Low visibility and frost deposition and or freezing rain and drizzle could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ RG Action: Cancelled Issued At: 2025-12-25 07:53:11 017 WWUS75 KTFX 251352 NPWTFX URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 652 AM MST Thu Dec 25 2025 MTZ310-314-251500- /O.CAN.KTFX.FG.Y.0012.000000T0000Z-251225T1600Z/ Western and Central Chouteau County-Fergus County below 4500ft- Including the following locations: Fort Benton, Hilger, Carter, Floweree, and Lewistown 652 AM MST Thu Dec 25 2025 ...DENSE FOG ADVISORY IS CANCELLED... While patchy dense fog remains, widespread dense fog is no longer occurring. Hence, the Dense Fog Advisory is being canceled a bit early. $$ AM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||