Alert archive / Montana / Blizzard Warnings in 2021
Blizzard Warning 1, NWS Great Falls, MT
NWS Great Falls, MT issued this blizzard warning at Feb 21, 2021, 2:30 AM MST. It took effect at Feb 21, 2021, 3:00 PM MST. It was in force for 37 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
- Feb 21, 2021, 2:30 AM MST (09:30 UTC)
- In effect from
- Feb 21, 2021, 3:00 PM MST
- Expired
- Feb 23, 2021, 3:52 AM MST
- In force
- 37 hr
- Issued by
- NWS Great Falls, MT
The text
As transmitted.
571 WWUS45 KTFX 210930 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 230 AM MST Sun Feb 21 2021 MTZ009-212300- /O.UPG.KTFX.WS.A.0003.210222T1200Z-210223T1800Z/ /O.NEW.KTFX.BZ.W.0001.210221T2200Z-210223T1800Z/ /O.NEW.KTFX.WW.Y.0017.210221T1200Z-210221T2200Z/ Northern Rocky Mountain Front- Including Logan Pass 230 AM MST Sun Feb 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM MST THIS AFTERNOON ABOVE 5000 FEET... ...BLIZZARD WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 AM MST TUESDAY ABOVE 5000 FEET... * WHAT...For the Blizzard Warning above 5000 feet, blizzard conditions expected. Total snow accumulations of 5 to 10 inches, with up to 20 inches in higher elevations. Winds gusting as high as 75 mph. For the Winter Weather Advisory above 5000 feet, snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 80 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...For the Blizzard Warning, from 3 PM this afternoon to 11 AM MST Tuesday. For the Winter Weather Advisory, until 3 PM MST this afternoon. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ http://www.weather.gov/greatfalls
6 follow-up statements
283 WWUS45 KTFX 212136 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 236 PM MST Sun Feb 21 2021 MTZ009-221200- /O.EXP.KTFX.WW.Y.0017.000000T0000Z-210221T2200Z/ /O.CON.KTFX.BZ.W.0001.210221T2200Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass 236 PM MST Sun Feb 21 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 5000 FEET... * WHAT...Blizzard conditions occurring above 5000 feet. Total snow accumulations of 3 to 5 inches near 5000 feet and 8 to 14 inches near Marias Pass with greater amounts across higher terrain. Winds gusting as high as 70 mph creating significant blowing and drifting snow with near zero visibility at times. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ http://www.weather.gov/greatfalls
347 WWUS45 KTFX 220207 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 707 PM MST Sun Feb 21 2021 MTZ009-221500- /O.CON.KTFX.BZ.W.0001.000000T0000Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass 707 PM MST Sun Feb 21 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Blizzard conditions occurring above 4500 feet. Additional snow accumulations of 3 to 9 inches between East Glacier and Lubec Lake, 10 to 18 inches at Marias Pass, and greater amounts across the higher terrain. Winds gusting as high as 80 mph creating significant blowing and drifting snow with near zero visibility at times. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && Moldan $$ http://www.weather.gov/greatfalls
317 WWUS45 KTFX 220332 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 832 PM MST Sun Feb 21 2021 MTZ009-221545- /O.CON.KTFX.BZ.W.0001.000000T0000Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass 832 PM MST Sun Feb 21 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Blizzard conditions occurring above 4500 feet. Additional snow accumulations of 3 to 9 inches between East Glacier and Lubec Lake, 10 to 18 inches at Marias Pass, and greater amounts across the higher terrain. Winds gusting as high as 80 mph creating significant blowing and drifting snow with near zero visibility at times. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && Moldan $$ MTZ014-048-221545- /O.NEW.KTFX.WW.Y.0018.210222T0332Z-210223T0700Z/ Central and Southern Lewis and Clark- Southern Rocky Mountain Front- Including Flesher Pass, Lincoln, MacDonald Pass, and Rogers Pass 832 PM MST Sun Feb 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MST MONDAY NIGHT ABOVE 4500 FEET... * WHAT...Snow occurring above 4500 feet. Additional snow accumulations of 4 to 8 inches for areas like Lincoln, MacDonald Pass, and Rogers Pass, with higher amounts in the higher terrain northwest of Montana Highway 200. Winds gusting as high as 70 mph. * WHERE...Central and Southern Lewis and Clark and Southern Rocky Mountain Front. This Advisory does not include the Helena Valley. * WHEN...Until midnight MST Monday night. * IMPACTS...Travel could be difficult. Blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow levels may rise high enough late Monday morning to allow snow to mix or change over to rain, before falling again late Monday afternoon which would change precipitation back over to all snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && Moldan $$ http://www.weather.gov/greatfalls
250 WWUS45 KTFX 221042 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 342 AM MST Mon Feb 22 2021 MTZ009-222300- /O.CON.KTFX.BZ.W.0001.000000T0000Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass 342 AM MST Mon Feb 22 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Blizzard conditions occurring above 4500 feet. Additional snow accumulations of 3 to 6 inches at lower elevations and 8 to 16 inches in the mountains. Winds gusting as high as 75 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will reduce visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ008-012-015-052>055-222300- /O.EXB.KTFX.WW.Y.0018.210223T0400Z-210223T1400Z/ Beaverhead-Cascade-Madison-Jefferson-Broadwater-Meagher-Gallatin- Including Big Hole Pass, Wisdom, Monida Pass, Wise River, Kings Hill Pass, Norris Hill, Raynolds Pass, Virginia City, Boulder Hill, Elk Park Pass, Homestake Pass, Martinsdale, Deep Creek Pass, White Sulphur Springs, City of Bozeman, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 342 AM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 7 AM MST TUESDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations of 3 to 6 inches in the mountains. Less than a half inch at lower elevations. Winds gusting as high as 45 mph. * WHERE...Portions of central and southwest Montana. * WHEN...From 9 PM this evening to 7 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow accumulations at lower elevations is expected to be less than a half inch, because some of the precipitation will fall as rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ014-222300- /O.EXT.KTFX.WW.Y.0018.000000T0000Z-210223T1400Z/ Central and Southern Lewis and Clark- Including Helena, Flesher Pass, Lincoln, MacDonald Pass, and Rogers Pass 342 AM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 AM MST TUESDAY... * WHAT...Periods of snow and blowing snow occurring. Additional snow accumulations of 5 to 10 inches in the mountains. Less than a half inch at lower elevations. * WHERE...Central and Southern Lewis and Clark. * WHEN...Until 7 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow accumulations at lower elevations is expected to be less than a half inch, because some of the precipitation will fall as rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ048-222300- /O.EXT.KTFX.WW.Y.0018.000000T0000Z-210223T1800Z/ Southern Rocky Mountain Front- 342 AM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Snow occurring above 4500 feet. Additional snow accumulations of 3 to 6 inches at lower elevations...and 8 to 16 inches in the mountains. Winds gusting as high as 70 mph. * WHERE...Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will reduce visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ http://www.weather.gov/greatfalls
731 WWUS45 KTFX 222339 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 439 PM MST Mon Feb 22 2021 MTZ009-231200- /O.CON.KTFX.BZ.W.0001.000000T0000Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass 439 PM MST Mon Feb 22 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Blizzard conditions occurring above 4500 feet. Additional snow accumulations of up to 9 inches, mainly at higher elevations and toward the passes. Winds gusting as high as 75 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will reduce visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ008-012-015-052>055-231200- /O.CON.KTFX.WW.Y.0018.210223T0400Z-210223T1400Z/ Beaverhead-Cascade-Madison-Jefferson-Broadwater-Meagher-Gallatin- Including Big Hole Pass, Wisdom, Monida Pass, Wise River, Kings Hill Pass, Norris Hill, Raynolds Pass, Virginia City, Boulder Hill, Elk Park Pass, Homestake Pass, Martinsdale, Deep Creek Pass, White Sulphur Springs, City of Bozeman, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 439 PM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 7 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Portions of central and southwest Montana. * WHEN...From 9 PM this evening to 7 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow accumulations at lower elevations is expected to be less than a half inch, because some of the precipitation will fall as rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ014-231200- /O.CON.KTFX.WW.Y.0018.000000T0000Z-210223T1400Z/ Central and Southern Lewis and Clark- Including Helena, Flesher Pass, Lincoln, MacDonald Pass, and Rogers Pass 439 PM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM MST TUESDAY... * WHAT...Periods of snow and blowing snow occurring. Additional snow accumulations of up to 8 inches, highest over the passes. Winds gusting as high as 60 mph. * WHERE...Central and Southern Lewis and Clark. * WHEN...Until 7 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow accumulations at lower elevations is expected to be less than one-half inch, because some of the precipitation will fall as rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ048-231200- /O.CON.KTFX.WW.Y.0018.000000T0000Z-210223T1800Z/ Southern Rocky Mountain Front- 439 PM MST Mon Feb 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY ABOVE 4500 FEET... * WHAT...Snow occurring above 4500 feet. Additional snow accumulations of up to 9 inches, mainly at higher elevations. Winds gusting as high as 80 mph. * WHERE...Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will reduce visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ http://www.weather.gov/greatfalls
785 WWUS45 KTFX 231052 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 352 AM MST Tue Feb 23 2021 MTZ009-231800- /O.CAN.KTFX.BZ.W.0001.000000T0000Z-210223T1800Z/ /O.EXA.KTFX.WW.Y.0018.000000T0000Z-210223T1800Z/ Northern Rocky Mountain Front- Including Logan Pass, Browning, and Heart Butte 352 AM MST Tue Feb 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... ...BLIZZARD WARNING IS CANCELLED... * WHAT...Snow occurring. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Northern Rocky Mountain Front. * WHEN...Until 11 AM MST this morning. * IMPACTS...Travel could be difficult at times. Areas of blowing snow will reduce visibility, possibly to near zero at times. * ADDITIONAL DETAILS... PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ012-231200- /O.CAN.KTFX.WW.Y.0018.000000T0000Z-210223T1400Z/ Cascade- 352 AM MST Tue Feb 23 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of impactful snow has shifted away from the area. A round of light snow is possible this afternoon, but accumulations should be light. $$ MTZ008-014-015-052>055-231600- /O.EXT.KTFX.WW.Y.0018.000000T0000Z-210223T1600Z/ Beaverhead-Central and Southern Lewis and Clark-Madison-Jefferson- Broadwater-Meagher-Gallatin- Including Big Hole Pass, Flesher Pass, Lincoln, Battle Ridge Pass, and Targhee Pass 352 AM MST Tue Feb 23 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Portions of central and southwest Montana. * WHEN...Until 9 AM MST this morning. * IMPACTS...Plan on slippery road conditions. Periods of heavier snow could cause sudden reductions in visibility on the mountain passes. * ADDITIONAL DETAILS...Snow accumulations at lower elevations is expected to be less than a half inch, as some of the precipitation will fall as rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ048-231800- /O.CON.KTFX.WW.Y.0018.000000T0000Z-210223T1800Z/ Southern Rocky Mountain Front- Including Bynum, Choteau, and Augusta 352 AM MST Tue Feb 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow occurring. Additional snow accumulations of up to 9 inches, mainly at higher elevations. Winds gusting as high as 40 mph. * WHERE...Southern Rocky Mountain Front. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will reduce visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ http://www.weather.gov/greatfalls
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 5:35 PM MST | Special Weather Statement | TFX | Jefferson | 40 min |
| Feb 20, 7:19 PM MST | Winter Storm Watch | TFX | 7 hr | |
| Feb 21, 2:30 AM MST | Winter Weather Advisory | TFX | 13 hr |
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.