Alert archive / Montana / Blizzard Warnings in 2021
Blizzard Warning 2, NWS Great Falls, MT
NWS Great Falls, MT issued this blizzard warning at Dec 10, 2021, 5:28 PM MST. It took effect at Dec 11, 2021, 2:00 AM MST. It was in force for 17 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 10, 2021, 5:28 PM MST (00:28 UTC)
- In effect from
- Dec 11, 2021, 2:00 AM MST
- Expired
- Dec 11, 2021, 7:10 PM MST
- In force
- 17 hr
- Issued by
- NWS Great Falls, MT
The text
As transmitted.
461 WWUS45 KTFX 110028 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 528 PM MST Fri Dec 10 2021 MTZ009-111200- /O.UPG.KTFX.WS.W.0005.211211T0900Z-211212T1800Z/ /O.NEW.KTFX.BZ.W.0002.211211T0900Z-211212T1800Z/ Northern Rocky Mountain Front- Including the following locations: Heart Butte, Browning, Marias Pass, and Logan Pass 528 PM MST Fri Dec 10 2021 ...BLIZZARD WARNING IN EFFECT FROM 2 AM SATURDAY TO 11 AM MST SUNDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 3 to 6 inches, with 9 to 16 inches along the immediate eastern slopes of the Rocky Mountain Front and in the mountains are possible. Winds gust as high as 90 mph possible. * WHERE...Northern Rocky Mountain Front. * WHEN...From 2 AM Saturday to 11 AM MST Sunday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. && $$ Pierce
3 follow-up statements
582 WWUS45 KTFX 111006 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 306 AM MST Sat Dec 11 2021 MTZ009-120300- /O.CON.KTFX.BZ.W.0002.000000T0000Z-211212T1800Z/ Northern Rocky Mountain Front- Including the following locations: Logan Pass, Heart Butte, Browning, and Marias Pass 306 AM MST Sat Dec 11 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST SUNDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 3 to 6 inches, with 9 to 16 inches along the immediate eastern slopes of the Rocky Mountain Front and in the mountains are possible. Winds gust as high as 90 mph possible. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Visibilities may drop below one-quarter mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. && $$ CC
611 WWUS45 KTFX 112052 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 152 PM MST Sat Dec 11 2021 MTZ009-121200- /O.CON.KTFX.BZ.W.0002.000000T0000Z-211212T1800Z/ Northern Rocky Mountain Front- Including the following locations: Logan Pass, Heart Butte, Browning, and Marias Pass 152 PM MST Sat Dec 11 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST SUNDAY... * WHAT...Blizzard conditions. Additional snow accumulations of 3 to 9 inches at lower elevations, with 12 to 18 inches along the immediate eastern slopes of the Rocky Mountain Front and in the mountains. Winds gusting as high as 80 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. && $$ MTZ014-048-121200- /O.NEW.KTFX.WW.Y.0043.211211T2052Z-211212T1800Z/ Central and Southern Lewis and Clark-Southern Rocky Mountain Front- Including the following locations: Lincoln, Choteau, Bynum, Augusta, MacDonald Pass, Rogers Pass, and Flesher Pass 152 PM MST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST SUNDAY... * WHAT...Snow. Additional snow accumulations of 4 to 8 inches over Rogers Pass, with 8 to 16 inches in the mountains north of Montana Highway 200. Winds gusting as high as 65 mph. * WHERE...Lewis and Clark County and the Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Travel could be difficult, especially over Rogers Pass and on secondary roads along the immediate Rocky Mountain Front. Blowing snow could significantly reduce visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ008-015-055-121200- /O.NEW.KTFX.WW.Y.0043.211212T0000Z-211213T0600Z/ Beaverhead-Madison-Gallatin- Including the following locations: Targhee Pass, West Yellowstone, Monida Pass, Big Hole Pass, and Raynolds Pass 152 PM MST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 PM MST SUNDAY... * WHAT...Snow expected. Total snow accumulations between 2 and 6 inches, with up to 12 inches over mountain passes along the Idaho border. Winds gusting as high as 65 mph near the higher peaks. * WHERE...Elevations above 6500 feet in Beaverhead, Gallatin and Madison Counties. * WHEN...From 5 PM this afternoon to 11 PM MST Sunday. * IMPACTS...Travel could be difficult, especially over Chief Joseph, Raynolds, and Targhee Passes. Blowing snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...This advisory does not include the cities of Bozeman, Dillon, or Ennis; in addition to Bozeman Pass. 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. && $$ Moldan
052 WWUS45 KTFX 120210 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 710 PM MST Sat Dec 11 2021 MTZ009-121800- /O.CAN.KTFX.BZ.W.0002.000000T0000Z-211212T1800Z/ /O.NEW.KTFX.WS.W.0006.211212T0210Z-211212T1800Z/ Northern Rocky Mountain Front- Including the following locations: Logan Pass, Heart Butte, Browning, and Marias Pass 710 PM MST Sat Dec 11 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST SUNDAY... ...BLIZZARD WARNING IS CANCELLED... * WHAT...Snow and blowing snow. Additional snow accumulations 3 to 6 inches close to the Rocky Mountain Front, with 6 to 12 inches on Marias Pass. Winds gusting 25 to 40 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Travel could be very difficult to impossible. Snow and blowing snow could reduce visibility below 1/2 mile. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$ MTZ008-015-055-121800- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211213T0600Z/ Beaverhead-Madison-Gallatin- Including the following locations: Targhee Pass, West Yellowstone, Monida Pass, Big Hole Pass, and Raynolds Pass 710 PM MST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST SUNDAY... * WHAT...Snow expected. Total snow accumulations between 2 and 6 inches, with up to 12 inches over mountain passes along the Idaho border. Winds gusting as high as 65 mph near the higher peaks. * WHERE...Elevations above 6500 feet in Beaverhead, Gallatin and Madison Counties. * WHEN...Until 11 PM MST Sunday. * IMPACTS...Travel could be difficult, especially over Chief Joseph, Raynolds, and Targhee Passes. Blowing snow could significantly reduce visibility at times. * ADDITIONAL DETAILS...This advisory does not include the cities of Bozeman, Dillon, or Ennis; in addition to Bozeman Pass. 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. && $$ MTZ014-048-121800- /O.CON.KTFX.WW.Y.0043.000000T0000Z-211212T1800Z/ Central and Southern Lewis and Clark-Southern Rocky Mountain Front- Including the following locations: Lincoln, Choteau, Bynum, Augusta, MacDonald Pass, Rogers Pass, and Flesher Pass 710 PM MST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SUNDAY... * WHAT...Snow. Additional snow accumulations of 4 to 8 inches over Rogers Pass, with 8 to 16 inches in the mountains north of Montana Highway 200. Winds gusting as high as 65 mph. * WHERE...Lewis and Clark County and the Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Travel could be difficult, especially over Rogers Pass and on secondary roads along the immediate Rocky Mountain Front. Blowing snow could significantly reduce visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. && $$
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 1:52 PM MST | Winter Weather Advisory | TFX | 4 days |
Nearby
Blizzard Warnings in Montana, 2021Every blizzard 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.