Alert archive / Montana / Blizzard Warnings in 2020
Blizzard Warning 2, NWS Great Falls, MT
NWS Great Falls, MT issued this blizzard warning at Oct 23, 2020, 1:51 PM MDT. It took effect at Oct 23, 2020, 3:00 PM MDT. It was in force for 21 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
- Oct 23, 2020, 1:51 PM MDT (19:51 UTC)
- In effect from
- Oct 23, 2020, 3:00 PM MDT
- Expired
- Oct 24, 2020, 12:00 PM MDT
- In force
- 21 hr
- Issued by
- NWS Great Falls, MT
The text
As transmitted.
797 WWUS45 KTFX 231951 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 151 PM MDT Fri Oct 23 2020 MTZ009-010-046-048-049-241200- /O.UPG.KTFX.WS.W.0012.201023T2100Z-201025T0300Z/ /O.NEW.KTFX.BZ.W.0002.201023T2100Z-201025T0300Z/ Northern Rocky Mountain Front-Eastern Glacier-Eastern Pondera- Southern Rocky Mountain Front-Eastern Teton- Including Logan Pass, Browning, Heart Butte, Cut Bank, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton 151 PM MDT Fri Oct 23 2020 ...BLIZZARD WARNING IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains.. Winds gusting as high as 40 mph. * WHERE...Northern Rocky Mountain Front, Eastern Glacier, Eastern Pondera, Southern Rocky Mountain Front and Eastern Teton. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be very difficult to impossible, especially from midnight tonight through early Saturday afternoon. Widespread blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. 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. && Moldan $$ MTZ044-241200- /O.UPG.KTFX.WW.Y.0047.201024T0000Z-201025T0300Z/ /O.EXA.KTFX.WS.W.0012.201023T2100Z-201025T0300Z/ Toole- Including Shelby and Sunburst 151 PM MDT Fri Oct 23 2020 ...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 10 inches. Winds gusting as high as 35 mph. * WHERE...Toole. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Blizzard conditions are possible from midnight tonight through Saturday afternoon. Western facing slopes of the island ranges could see locally reduced snowfall totals due to downsloping. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && Moldan $$ MTZ012>014-050>054-241200- /O.CON.KTFX.WS.W.0012.201023T2100Z-201025T0300Z/ Cascade-Chouteau-Central and Southern Lewis and Clark- Judith Basin-Fergus-Jefferson-Broadwater-Meagher- Including Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Helena, Flesher Pass, Lincoln, MacDonald Pass, Rogers Pass, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, Townsend, Winston, Martinsdale, Deep Creek Pass, and White Sulphur Springs 151 PM MDT Fri Oct 23 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains. Winds gusting as high as 35 mph. * WHERE...Portions of central, north central, southwest and west central Montana. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Blizzard conditions are possible from midnight tonight through Saturday afternoon. Western facing slopes of the island ranges could see locally reduced snowfall totals due to downsloping. 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 for the state you are calling from can be obtained by calling 5 1 1. && Moldan $$ MTZ011-045-047-241200- /O.CON.KTFX.WW.Y.0047.201024T0000Z-201025T0300Z/ Hill-Liberty-Blaine- Including Havre, Rocky Boy, Rudyard, Chester, Whitlash, Chinook, Harlem, and Hays 151 PM MDT Fri Oct 23 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 8 inches, with the highest amounts falling mainly south of the United States Highway 2 corridor. Winds gusting as high as 35 mph. * WHERE...Liberty, Blaine and Hill. * WHEN...From 6 PM this evening to 9 PM MDT Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Western facing slopes of the island ranges could see locally reduced snowfall totals due to downsloping. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && Moldan $$ MTZ008-015-055-241200- /O.CON.KTFX.WW.Y.0047.201024T0000Z-201025T0300Z/ Beaverhead-Madison-Gallatin- Including Big Hole Pass, Wisdom, Dillon, Monida Pass, Wise River, Ennis, Norris Hill, Raynolds Pass, Twin Bridges, Virginia City, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 151 PM MDT Fri Oct 23 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 9 inches at lower elevations, with 10 to 15 inches in the mountains and over mountain passes.. * WHERE...Gallatin, Beaverhead and Madison. * WHEN...From 6 PM this evening to 9 PM MDT Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...The heaviest snow and strongest winds are expected from midnight tonight through Saturday afternoon. 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 $$ http://www.weather.gov/greatfalls
3 follow-up statements
215 WWUS45 KTFX 240255 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 855 PM MDT Fri Oct 23 2020 MTZ009-010-046-048-049-241500- /O.CON.KTFX.BZ.W.0002.000000T0000Z-201025T0300Z/ Northern Rocky Mountain Front-Eastern Glacier-Eastern Pondera- Southern Rocky Mountain Front-Eastern Teton- Including Logan Pass, Browning, Heart Butte, Cut Bank, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton 855 PM MDT Fri Oct 23 2020 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Blizzard conditions occurring. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains. Winds gusting as high as 40 mph. * WHERE...Northern Rocky Mountain Front, Eastern Glacier, Eastern Pondera, Southern Rocky Mountain Front and Eastern Teton. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be very difficult to impossible, especially from midnight tonight through early Saturday afternoon. Widespread blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ012>014-044-050>054-241500- /O.CON.KTFX.WS.W.0012.000000T0000Z-201025T0300Z/ Cascade-Chouteau-Central and Southern Lewis and Clark-Toole- Judith Basin-Fergus-Jefferson-Broadwater-Meagher- Including Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Helena, Flesher Pass, Lincoln, MacDonald Pass, Rogers Pass, Shelby, Sunburst, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, Townsend, Winston, Martinsdale, Deep Creek Pass, and White Sulphur Springs 855 PM MDT Fri Oct 23 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Heavy snow occurring. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains. Winds gusting as high as 35 mph. * WHERE...Portions of central, north central, southwest and west central Montana. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Blizzard conditions are possible from midnight tonight through Saturday afternoon. Western facing slopes of the island ranges could see locally reduced snowfall totals due to downsloping. 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 for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ011-045-047-241500- /O.CON.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Hill-Liberty-Blaine- Including Havre, Rocky Boy, Rudyard, Chester, Whitlash, Chinook, Harlem, and Hays 855 PM MDT Fri Oct 23 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Snow occurring. Total snow accumulations of 2 to 8 inches, with the highest amounts falling mainly south of the United States Highway 2 corridor. Winds gusting as high as 35 mph. * WHERE...Liberty, Blaine and Hill. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Western facing slopes of the island ranges could see locally reduced snowfall totals due to downsloping. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ008-015-055-241500- /O.CON.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Beaverhead-Madison-Gallatin- Including Big Hole Pass, Wisdom, Dillon, Monida Pass, Wise River, Ennis, Norris Hill, Raynolds Pass, Twin Bridges, Virginia City, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 855 PM MDT Fri Oct 23 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * WHAT...Snow occurring. Total snow accumulations of 3 to 9 inches at lower elevations, with 10 to 15 inches in the mountains and over mountain passes. * WHERE...Gallatin, Beaverhead and Madison. * WHEN...Until 9 PM MDT Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...The heaviest snow and strongest winds are expected from midnight tonight through Saturday afternoon. 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. && $$ http://www.weather.gov/greatfalls
537 WWUS45 KTFX 240910 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 310 AM MDT Sat Oct 24 2020 MTZ009-010-046-048-049-242300- /O.CON.KTFX.BZ.W.0002.000000T0000Z-201025T0300Z/ Northern Rocky Mountain Front-Eastern Glacier-Eastern Pondera- Southern Rocky Mountain Front-Eastern Teton- Including Logan Pass, Browning, Heart Butte, Cut Bank, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton 310 AM MDT Sat Oct 24 2020 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Blizzard conditions occurring. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains. Winds gusting as high as 40 mph. * WHERE...Eastern Teton, Southern Rocky Mountain Front, Northern Rocky Mountain Front, Eastern Pondera and Eastern Glacier. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible, especially through early afternoon. Widespread blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ012>014-044-050>054-242300- /O.CON.KTFX.WS.W.0012.000000T0000Z-201025T0300Z/ Cascade-Chouteau-Central and Southern Lewis and Clark-Toole- Judith Basin-Fergus-Jefferson-Broadwater-Meagher- Including Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Helena, Flesher Pass, Lincoln, MacDonald Pass, Rogers Pass, Shelby, Sunburst, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, Townsend, Winston, Martinsdale, Deep Creek Pass, and White Sulphur Springs 310 AM MDT Sat Oct 24 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Heavy snow occurring. Total snow accumulations of 8 to 16 inches, with isolated amounts approaching 20 inches in the mountains. Winds gusting as high as 35 mph. * WHERE...Portions of central, north central, southwest and west central Montana. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. 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 for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ011-045-047-242300- /O.CON.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Hill-Liberty-Blaine- Including Havre, Rocky Boy, Rudyard, Chester, Whitlash, Chinook, Harlem, and Hays 310 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 2 to 8 inches, with the highest amounts falling mainly south of the United States Highway 2 corridor. Winds gusting as high as 35 mph. * WHERE...Liberty, Blaine and Hill. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ008-015-055-242300- /O.CON.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Beaverhead-Madison-Gallatin- Including Big Hole Pass, Wisdom, Dillon, Monida Pass, Wise River, Ennis, Norris Hill, Raynolds Pass, Twin Bridges, Virginia City, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 310 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 2 to 8 inches at lower elevations, with 10 to 15 inches in the mountains and over mountain passes. * WHERE...Gallatin, Beaverhead and Madison. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. 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. && $$ http://www.weather.gov/greatfalls
235 WWUS45 KTFX 241750 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 1150 AM MDT Sat Oct 24 2020 MTZ044-250000- /O.CAN.KTFX.WS.W.0012.000000T0000Z-201025T0300Z/ /O.EXB.KTFX.WW.Y.0047.201024T1800Z-201025T0000Z/ Toole- Including Shelby and Sunburst 1150 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow expected. Total snow accumulations of up to one inch. * WHERE...Toole. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ047-241900- /O.CAN.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Blaine- 1150 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY IS CANCELLED... Areas of light snow continue across Blaine County, but with little or no new snow accumulation expected today. $$ MTZ009-010-046-048-049-250000- /O.EXB.KTFX.WW.Y.0047.201024T1800Z-201025T0000Z/ /O.EXT.KTFX.BZ.W.0002.000000T0000Z-201024T1800Z/ Northern Rocky Mountain Front-Eastern Glacier-Eastern Pondera- Southern Rocky Mountain Front-Eastern Teton- Including Logan Pass, Browning, Heart Butte, Cut Bank, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton 1150 AM MDT Sat Oct 24 2020 ...BLIZZARD WARNING CANCELLED... ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of up to two inches. * WHERE...Northern Rocky Mountain Front, Eastern Glacier, Eastern Pondera, Southern Rocky Mountain Front and Eastern Teton. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Snowfall rates have decreased. There remain areas of drifting snow. Blizzard conditions are no longer occurring or expected today. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ012>014-050>054-250300- /O.CON.KTFX.WS.W.0012.000000T0000Z-201025T0300Z/ Cascade-Chouteau-Central and Southern Lewis and Clark- Judith Basin-Fergus-Jefferson-Broadwater-Meagher- Including Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Helena, Flesher Pass, Lincoln, MacDonald Pass, Rogers Pass, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, Grass Range, Montana City, Boulder, Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, Townsend, Winston, Martinsdale, Deep Creek Pass, and White Sulphur Springs 1150 AM MDT Sat Oct 24 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Heavy snow occurring. Additional snow accumulations of up to two inches. * WHERE...Portions of central, north central, southwest and west central Montana. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. 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 for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ011-045-250000- /O.EXT.KTFX.WW.Y.0047.000000T0000Z-201025T0000Z/ Hill-Liberty- Including Havre, Rocky Boy, Rudyard, Chester, and Whitlash 1150 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow occurring. Additional snow accumulations of up to one inch. * WHERE...Liberty and Hill. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. To see a graphical representation of the degree of stress on young livestock, please visit our webpage and select Local Programs, then Cold Air Advisory for Newborn Livestock. && $$ MTZ008-015-055-250300- /O.CON.KTFX.WW.Y.0047.000000T0000Z-201025T0300Z/ Beaverhead-Madison-Gallatin- Including Big Hole Pass, Wisdom, Dillon, Monida Pass, Wise River, Ennis, Norris Hill, Raynolds Pass, Twin Bridges, Virginia City, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 1150 AM MDT Sat Oct 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow occurring. Additional snow accumulations of up to two inches. * WHERE...Gallatin, Beaverhead and Madison. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. 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. && $$ http://www.weather.gov/greatfalls
What forecasters said that day
The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Great Falls, MT wrote its last area forecast discussion before this blizzard warning went out at Oct 23, 9:51 AM MDT, 4 hours earlier.
Area forecast discussion, Oct 23, 9:51 AM MDT, 4 hours before
Area Forecast Discussion National Weather Service Great Falls MT 951 AM MDT Fri Oct 23 2020 .SYNOPSIS... A strong winter storm will impact the region this afternoon through Saturday night or early Sunday. The storm will bring widespread snow, blowing snow, and very cold wind chills. Travel could be very hazardous tonight through Saturday night, and motorist are urged to be prepared for winter driving conditons. && .Morning Update... No major updates planned to the on-going forecast other than to freshen up hourlies based on current observation trends. Otherwise the patchy dense fog that has been seen across Central and North Central has been gradually dissipating with increasing solar insolation, and expect this trend to continue through the remainder of the morning. Focus for the remainder of the shift will be on the strong winter storm that will impact the region from tonight through Saturday. Early model consensus this morning continues to support the on-going forecast that significant snowfall will impact portions of the region, with the potential for near-whiteout/blizzard conditions from tonight through Saturday morning over the plains of Central and North Central Montana. - Moldan && .AVIATION... 1147 PM MDT Thu Oct 22 2020 (23/00Z TAF Period) Northwest flow aloft prevails tonight through about 18Z before a strong wave aloft moves over northwestern Montana. An associated strong surface cold front sweeps southward from Canada by 00Z Saturday. For tonight, areas of fog producing LIFR/IFR/MVFR conditions are possible across most of north central Montana, continuing through 15Z. Snow, fog, low clouds producing deteriorating flight conditions will develop from northwest to southeast across the forecast area Friday afternoon/evening. mpj Refer to weather.gov/zlc for more detailed regional aviation weather and hazard information. && .PREV DISCUSSION... /ISSUED 331 AM MDT Fri Oct 23 2020/ Montana remains in the crosshairs for a strong early winter snow storm beginning this afternoon and continuing through at least Saturday evening. A strong upper level disturbance currently over southeast Alaska will continue to move south-southeastward today, reaching the Pacific Northwest/British Columbia border by late afternoon. This feature then approaches western Montana overnight in conjunction with a strong surface cold front that sweeps southward out of Alberta into north central portions of the state. Widespread snow (heavy at times), blowing snow, and very cold windchills can be anticipated tonight and through the day on Saturday. Snow gradually tapers off Saturday night or early Sunday morning as the core of the upper level trough continues moving southward. Models continue to be in excellent agreement on the details of this storm with very good run-to-run consistency so confidence is very high that impacts will be extensive and widespread. It continues to appear that the east slopes of the Rocky Mountains and much of central Montana could see upwards of 8 to 12 inches of snow accumulation and some models even suggest that up to 18 inches of snow may not be out of the question. The Winter Storm Warning will remain in effect for this region. Lesser amounts of snow can be expected along eastern portions of the Hi- Line and in southwest Montana. These areas are under a Winter Weather Advisory. Finally, a surface high pressure system, possibly as high as 1040 to 1045 millibars will be centered over central and western Montana by Sunday morning. Low temperatures on Sunday will likely fall to near or below zero with many record temperatures expected to be set across the entire forecast area. mpj Monday through next Friday...The extended period models and ensembles continue to indicate that warmer conditions will develop by mid to late week. However, there have been some important changes that have lowered confidence in this forecast solution. Previous model runs suggested that an upper level ridge would progress from off the West Coast into western North America. This would place Montana beneath the ridge axis with Pacific moisture being shunted far northward into Canada for dry and warm conditions. More recent model runs are now trending toward keeping this ridge along the West Coast as the upper level trough responsible for this weekend's storm develops a strong positive tilt over the western USA. Eventually, the southwest extension of the trough develops into a closed low over the Desert Southwest. This ends up placing Montana beneath a relatively dry northwest flow aloft that should allow temperatures to warm up, but this pattern will not be as favorable for dry and warm conditions as the previous forecasts suggested. Meanwhile, the northern extension of the trough progresses eastward and is absorbed into a broad upper level trough over central and eastern Canada. Shortwave ridging then develops over the northern Rocky Mountains on Thursday, followed closely by another trough and an increasing chance for moisture Friday and next weekend. mpj && .PRELIMINARY POINT TEMPS/POPS... GTF 21 9 14 -3 / 80 100 100 60 CTB 15 7 12 -7 / 80 100 90 30 HLN 30 13 18 1 / 80 100 100 50 BZN 33 16 22 -4 / 40 100 100 50 WYS 33 20 32 -8 / 10 100 100 30 DLN 39 19 25 -4 / 30 90 100 30 HVR 20 10 18 -1 / 30 90 80 20 LWT 25 10 14 -2 / 40 100 100 70 && .TFX WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning from 3 PM this afternoon to 9 PM MDT Saturday Broadwater...Cascade...Central and Southern Lewis and Clark...Chouteau...Eastern Glacier...Eastern Pondera...Eastern Teton...Fergus...Jefferson...Judith Basin...Meagher...Northern Rocky Mountain Front...Southern Rocky Mountain Front. Winter Weather Advisory from 6 PM this evening to 9 PM MDT Saturday Blaine...Hill...Liberty...Toole. Winter Weather Advisory from 6 PM this evening to 9 PM MDT Saturday Beaverhead...Gallatin...Madison. && http://www.weather.gov/greatfalls
In the hours before
Special weather statement, Oct 23, 8:06 AM MDT, 5 hours 45 minutes before
Special Weather Statement National Weather Service Great Falls MT 806 AM MDT Fri Oct 23 2020 MTZ009>013-044>051-231600- Northern Rocky Mountain Front-Eastern Glacier-Hill-Cascade- Chouteau-Toole-Liberty-Eastern Pondera-Blaine- Southern Rocky Mountain Front-Eastern Teton-Judith Basin-Fergus- Including the cities of Logan Pass, Marias Pass, Browning, Heart Butte, Cut Bank, Havre, Rocky Boy, Rudyard, Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Shelby, Sunburst, Chester, Whitlash, Brady, Conrad, Chinook, Harlem, Hays, Bynum, Choteau, Augusta, Fairfield, Dutton, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, and Grass Range 806 AM MDT Fri Oct 23 2020 ...AREAS OF DENSE FOG WILL AFFECT NORTH CENTRAL MONTANA THROUGH THIS MORNING... Areas of fog have developed across North-Central Montana this morning. This fog is generally resulting in visibilities of 1 to 2 miles. However, this fog is locally very dense, resulting in visibilities of 1/4 mile or less, which is causing dangerous driving conditions. In addition to the poor visibility, the fog will deposit ice on roads, bridges, and sidewalks. Slow down and use caution while traveling!
Special weather statement, Oct 23, 9:55 AM MDT, 3 hours 56 minutes before
Special Weather Statement National Weather Service Great Falls MT 955 AM MDT Fri Oct 23 2020 MTZ009>013-044>046-048-049-231800- Northern Rocky Mountain Front-Eastern Glacier-Hill-Cascade- Chouteau-Toole-Liberty-Eastern Pondera- Southern Rocky Mountain Front-Eastern Teton- Including the cities of Logan Pass, Marias Pass, Browning, Heart Butte, Cut Bank, Havre, Rocky Boy, Rudyard, Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Shelby, Sunburst, Chester, Whitlash, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton 955 AM MDT Fri Oct 23 2020 ...AREAS OF DENSE FOG CONTINUE TO AFFECT NORTH CENTRAL MONTANA THROUGH THIS MORNING... Areas of fog continue to persist across North-Central Montana this morning. This fog is generally resulting in visibilities of 1 to 2 miles. However, while the fog is generally beginning to this this morning, there are still some pockets of locally very dense fog, which is resulting in visibilities of 1/4 mile or less.. In addition to the poor visibility, the fog may deposit ice on roads, bridges, and sidewalks, creating hazardous driving conditions. Slow down and use caution while traveling!
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 3:00 AM MDT | Winter Weather Advisory | TFX | 42 hr | |
| Oct 23, 4:25 AM MDT | Special Weather Statement | TFX | Cascade | 3 hr |
Nearby
Blizzard Warnings in Montana, 2020Every blizzard warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.