Alert archive / Montana / Winter Storm Warnings in 2021
Winter Storm Warning 7, NWS Great Falls, MT
NWS Great Falls, MT issued this winter storm warning at Dec 13, 2021, 1:58 PM MST. It was in force for 39 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2021, 1:58 PM MST (20:58 UTC)
- Expired
- Dec 15, 2021, 5:00 AM MST
- In force
- 39 hr
- Issued by
- NWS Great Falls, MT
The text
As transmitted.
856 WWUS45 KTFX 132058 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 158 PM MST Mon Dec 13 2021 MTZ008-015-055-141200- /O.NEW.KTFX.WS.W.0007.211213T2058Z-211215T1200Z/ /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, City of Bozeman, Bozeman Apt, Monida Pass, Wisdom, Norris Hill, Wise River, Big Hole Pass, Battle Ridge Pass, Ennis, and Bozeman Pass 158 PM MST Mon Dec 13 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for Elevations Above 6500 feet, heavy snow. Additional snow accumulations between 4 and 12 inches, with isolated amounts approaching 20 inches. For the Winter Weather Advisory for Elevations Below 6500 feet, snow. Additional snow accumulations between 1 and 4 inches. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ Moldan
9 follow-up statements
898 WWUS45 KTFX 132122 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 222 PM MST Mon Dec 13 2021 MTZ008-015-055-141500- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, City of Bozeman, Bozeman Apt, Monida Pass, Wisdom, Norris Hill, Wise River, Big Hole Pass, Battle Ridge Pass, Ennis, and Bozeman Pass 222 PM MST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for Elevations Above 6500 feet, heavy snow. Additional snow accumulations between 4 and 12 inches, with isolated amounts approaching 20 inches. For the Winter Weather Advisory for Elevations Below 6500 feet, snow. Additional snow accumulations between 1 and 4 inches. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ009-048-141500- /O.EXB.KTFX.WW.Y.0043.211214T0000Z-211214T1800Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 222 PM MST Mon Dec 13 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of up to 1 inch over the plains, with 2 to 5 inches over mountain passes. Higher amounts expected above pass levels. * WHERE...The Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ014-052-141500- /O.EXB.KTFX.WW.Y.0043.211214T0000Z-211215T0000Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 222 PM MST Mon Dec 13 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-141500- /O.EXB.KTFX.WW.Y.0043.211214T1800Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 222 PM MST Mon Dec 13 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 5 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...From 11 AM Tuesday to 5 AM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ Moldan
937 WWUS45 KTFX 140901 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 201 AM MST Tue Dec 14 2021 MTZ008-015-055-150015- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee Pass, and City of Bozeman 201 AM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations between 6 and 12 inches, with isolated amounts approaching 15 inches. For the Winter Weather Advisory for Elevations below 6500 feet, snow. Additional snow accumulations up to 3 inches. * WHERE...Elevations above 6500 feet in Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ009-048-141800- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211214T1800Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 201 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of up to 1 inch over the plains, with 2 to 5 inches over mountain passes. Higher amounts expected above pass levels. * WHERE...The Rocky Mountain Front. * WHEN...Until 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ014-052-150000- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 201 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to one inch. Winds gusting as high as 35 mph. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-150015- /O.CON.KTFX.WW.Y.0043.211214T1800Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 201 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations up to two inches. Winds gusting as high as 35 mph. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...From 11 AM this morning to 5 AM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ CC
399 WWUS45 KTFX 141334 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 634 AM MST Tue Dec 14 2021 MTZ008-015-055-142200- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 634 AM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 45 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ009-048-141800- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211214T1800Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 634 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of up to 1 inch over the plains, with 2 to 5 inches over mountain passes. Higher amounts expected above pass levels. * WHERE...The Rocky Mountain Front. * WHEN...Until 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ014-052-142200- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 634 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-142200- /O.CON.KTFX.WW.Y.0043.211214T1800Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 634 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...From 11 AM this morning to 5 AM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ Brusda
967 WWUS45 KTFX 141725 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 1025 AM MST Tue Dec 14 2021 MTZ008-015-055-150000- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 1025 AM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 45 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. $$ MTZ009-048-150000- /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 1025 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...The Rocky Mountain Front. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. $$ MTZ014-052-150000- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 1025 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to one inch. Winds gusting as high as 35 mph. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. $$ MTZ012-050-051-053-054-150000- /O.CON.KTFX.WW.Y.0043.211214T1800Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 1025 AM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations 1 to 2 inches. Winds gusting as high as 35 mph. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. $$ Brusda
057 WWUS45 KTFX 142115 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 215 PM MST Tue Dec 14 2021 MTZ008-015-055-151200- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 215 PM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations up to 7 inches, with winds gusting as high as 40 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations up to 4 inches, with winds gusting as high as 35 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Tuesday evening commute. $$ MTZ009-048-150000- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 215 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...The Rocky Mountain Front. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. $$ MTZ012-050-051-053-054-151200- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 215 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 35 mph. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Areas that remain above freezing this afternoon will quickly cool as a sharp cold front pushes through. Roads may still be warm enough to melt snow at the onset of precipitation, which could result in icy roads when they cool below freezing. $$ MTZ014-052-150000- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 215 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Rapidly falling temperatures this afternoon and evening will cause wet roadways to quickly freeze. $$ Ludwig
538 WWUS45 KTFX 142349 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 449 PM MST Tue Dec 14 2021 MTZ009-048-150100- /O.EXP.KTFX.WW.Y.0043.000000T0000Z-211215T0000Z/ Northern Rocky Mountain Front-Southern Rocky Mountain Front- Including the following locations: Marias Pass, Bynum, Choteau, Browning, Heart Butte, Logan Pass, and Augusta 449 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... The main area of snow is exiting the Northern Rocky Mountain Front area, so the threat has ended. $$ MTZ008-015-055-150600- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 449 PM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations up to 7 inches, with winds gusting as high as 40 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations up to 4 inches, with winds gusting as high as 35 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. $$ MTZ014-052-150600- /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T0600Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 449 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches in the valleys, and up to 4 inches in the mountains. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 11 PM MST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make these hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-150600- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 449 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches at lower elevations, and up to 4 inches in the mountains. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make the hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ SC
626 WWUS45 KTFX 150156 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 656 PM MST Tue Dec 14 2021 MTZ008-015-055-150600- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 656 PM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations up to 7 inches, with winds gusting as high as 40 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations up to 4 inches, with winds gusting as high as 35 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. $$ MTZ011-013-045-047-150600- /O.EXA.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Hill-Chouteau-Liberty-Blaine- Including the following locations: Hays, Carter, Rudyard, Rocky Boy, Whitlash, Havre, Chester, Fort Benton, Chinook, Harlem, and Big Sandy 656 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of mostly 1 to 2 inches, but up to 4 inches possible in the Bears Paw Mountains. * WHERE...Blaine, Chouteau, Hill and Liberty Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make the hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-150600- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 656 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches at lower elevations, and up to 4 inches in the mountains. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make the hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ014-052-150600- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T0600Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 656 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches in the valleys, and up to 4 inches in the mountains. * WHERE...Jefferson and Central and Southern Lewis and Clark Counties. * WHEN...Until 11 PM MST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make these hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ SC
682 WWUS45 KTFX 150559 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 1059 PM MST Tue Dec 14 2021 MTZ014-052-150700- /O.EXP.KTFX.WW.Y.0043.000000T0000Z-211215T0600Z/ Central and Southern Lewis and Clark-Jefferson- Including the following locations: Boulder, Lincoln, Boulder Hill, Montana City, Whitehall, Elk Park Pass, MacDonald Pass, Rogers Pass, and Flesher Pass 1059 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... The advisory will be allowed to expire, but continue to use caution as roads may still be slippery. $$ MTZ008-015-055-151200- /O.CON.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 1059 PM MST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS ABOVE 6500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY FOR ELEVATIONS BELOW 6500 FEET... * WHAT...For the Winter Storm Warning for elevations above 6500 feet, heavy snow. Additional snow accumulations up to 7 inches, with winds gusting as high as 40 mph. For the Winter Weather Advisory for elevations below 6500 feet, snow. Additional snow accumulations up to 4 inches, with winds gusting as high as 35 mph. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. $$ MTZ011-013-045-047-151200- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Hill-Chouteau-Liberty-Blaine- Including the following locations: Hays, Carter, Rudyard, Rocky Boy, Whitlash, Havre, Chester, Fort Benton, Chinook, Harlem, and Big Sandy 1059 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of mostly 1 to 2 inches, but up to 4 inches possible in the Bears Paw Mountains. * WHERE...Blaine, Chouteau, Hill and Liberty Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make the hazards difficult to see. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ012-050-051-053-054-151200- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 1059 PM MST Tue Dec 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches at lower elevations, and up to 4 inches in the mountains. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to rapidly falling temperatures with initially wet roads. Snow accumulating on these icy roads will make the hazards difficult to see. * ADDITIONAL DETAILS...Areas that remain above freezing this afternoon will quickly cool as a sharp cold front pushes through. Roads may still be warm enough to melt snow at the onset of precipitation, which could result in icy roads when they cool below freezing. $$ RG
152 WWUS45 KTFX 151142 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 442 AM MST Wed Dec 15 2021 MTZ008-015-055-151600- /O.EXP.KTFX.WS.W.0007.000000T0000Z-211215T1200Z/ /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T1600Z/ Beaverhead-Madison-Gallatin- Including the following locations: Twin Bridges, West Yellowstone, Virginia City, Targhee Pass, Raynolds Pass, Dillon, Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge Pass, Ennis, and Bozeman Pass 442 AM MST Wed Dec 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... ...WINTER STORM WARNING WILL EXPIRE AT 5 AM MST EARLY THIS MORNING... * WHAT...Snow is occurring. Additional snow accumulations up to 2 inches possible. * WHERE...Beaverhead, Gallatin and Madison Counties. * WHEN...Until 9 AM MST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely be slippery and hazardous. Travel could be difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report && $$ MTZ011-045-047-151245- /O.EXP.KTFX.WW.Y.0043.000000T0000Z-211215T1200Z/ Hill-Liberty-Blaine- 442 AM MST Wed Dec 15 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS MORNING... Snow is now diminishing and ending, continue to use caution if traveling as roads may still be slippery. $$ MTZ012-050-051-053-054-151600- /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T1600Z/ Cascade-Judith Basin-Fergus-Broadwater-Meagher- Including the following locations: Deep Creek Pass, Raynesford, Stanford, Toston, Winston, Martinsdale, Winifred, Cascade, Grass Range, Lewistown Divide, Great Falls, White Sulphur Springs, Lewistown, Hobson, Kings Hill Pass, Townsend, and Belt 442 AM MST Wed Dec 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations up to 2 inches possible. * WHERE...Cascade, Fergus, Judith Basin, Meagher and Broadwater Counties. * WHEN...Until 9 AM MST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely be slippery and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ013-151600- /O.EXT.KTFX.WW.Y.0043.000000T0000Z-211215T1600Z/ Chouteau- Including the following locations: Fort Benton, Big Sandy, and Carter 442 AM MST Wed Dec 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations up to one inch possible. * WHERE...Chouteau County. * WHEN...Until 9 AM MST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely be slippery and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ RG
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Winter Storm Warnings in Montana, 2021Every winter storm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.