Alert archive / Montana / Winter Storm Watches in 2021
Winter Storm Watch 2, NWS Missoula, MT
NWS Missoula, MT issued this winter storm watch at Feb 4, 2021, 1:34 PM MST for 6 counties in Montana. It took effect at Feb 6, 2021, 12:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 4, 2021, 1:34 PM MST (20:34 UTC)
- In effect from
- Feb 6, 2021, 12:00 PM MST
- Expired
- Feb 5, 2021, 2:59 PM MST
- In force
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Granite County, MT, Lake County, MT, Missoula County, MT, Powell County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 31 km from the middle of the area, began a volume at 20:37 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.6 hours before the alert went out and 190 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1202 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
505 WWUS45 KMSO 042034 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 134 PM MST Thu Feb 4 2021 IDZ005-006-051800- /O.NEW.KMSO.WS.W.0002.210205T0000Z-210205T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1234 PM PST Thu Feb 4 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM PST FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 16 inches. Snowfall rates of 1 inch or greater per hour likely between 10 pm and 6 am. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$ MTZ002-003-052045- /O.NEW.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ West Glacier Region-Flathead/Mission Valleys- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 1 to 3 inches Flathead Valley and 3 to 10 inches elsewhere. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 8 inches possible in the Flathead Valley, 6 to 12 inches elsewhere with up to 16 inches in the high country. East winds could gust as high as 40 mph could create near whiteout conditions along US-2. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...For the Winter Weather Advisory, from 5 PM this afternoon to 11 AM MST Friday. For the Winter Storm Watch, from Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-052045- /O.NEW.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Potomac/Seeley Lake Region- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 6 to 13 inches. A period of moderate snow can be expected between 10 pm and 8 am. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 8 to 16 inches possible. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...For the Winter Weather Advisory, from 5 PM this afternoon to 11 AM MST Friday. For the Winter Storm Watch, from Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-051800- /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Kootenai/Cabinet Region- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of a trace to 2 inches in the valleys and 3 to 5 inches above 4000 feet. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ MTZ006-051800- /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Bitterroot/Sapphire Mountains- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 8 to 13 inches. A period of moderate snow will impact the area between 10 pm and 8 am. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. 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. && $$ MTZ007-051800- /O.EXB.KMSO.WW.Y.0011.210205T0600Z-210205T1800Z/ Butte/Blackfoot Region- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 11 AM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches I-90 corridor and northward, while 2 to 4 inches around Butte. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 11 PM this evening to 11 AM MST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-051800- /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Orofino/Grangeville Region- 1234 PM PST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM PST FRIDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 1 to 3 inches in the Camas Prairie and 3 to 12 inches above 4000 feet. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. 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. && $$ IDZ008-051800- /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Lower Hells Canyon/Salmon River Region- 1234 PM PST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM PST FRIDAY... * WHAT...Snow expected. Total snow accumulations of a trace to 2 inches HWY 95 and valleys and 3 to 9 inches above 4000 feet. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-051800- /O.EXB.KMSO.WW.Y.0011.210205T0000Z-210205T1800Z/ Missoula/Bitterroot Valleys- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Potential for moderate rates of snow between 4 am and 8 am. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. 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. && $$ MTZ004-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Clark Fork Region- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Mixed precipitation expected. Valley locations, likely to start as rain, will transition to snow overnight. Total snow accumulations of 3 to 10 inches with 6 to 12 inches at Lookout Pass. A period of moderate snow can be expected from 10pm through 6am Friday. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
4 follow-up statements
752 WWUS45 KMSO 051120 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 420 AM MST Fri Feb 5 2021 IDZ005-006-051800- /O.CON.KMSO.WS.W.0002.000000T0000Z-210205T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 320 AM PST Fri Feb 5 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 16 inches. Snowfall rates of 1 inch or greater per hour likely between 10 pm and 6 am. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$ IDZ009-010-052000- /O.EXB.KMSO.WW.Y.0011.000000T0000Z-210205T2000Z/ Western Lemhi County-Eastern Lemhi County- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... * WHAT...Snow. Snow accumulations of 1 to 3 inches. 3 to 6 inches above 6500 feet. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 1 PM MST this afternoon. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-003-061130- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ /O.CON.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ West Glacier Region-Flathead/Mission Valleys- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 1 to 3 inches Flathead Valley and 3 to 10 inches elsewhere. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 8 inches possible in the Flathead Valley, 6 to 12 inches elsewhere with up to 16 inches in the high country. East winds could gust as high as 40 mph could create near whiteout conditions along US-2. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...For the Winter Weather Advisory, from 5 PM this afternoon to 11 AM MST Friday. For the Winter Storm Watch, from Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-061130- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ /O.CON.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ Potomac/Seeley Lake Region- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 6 to 13 inches. A period of moderate snow can be expected between 10 pm and 8 am. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 8 to 16 inches possible. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...For the Winter Weather Advisory, from 5 PM this afternoon to 11 AM MST Friday. For the Winter Storm Watch, from Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Clark Fork Region- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Mixed precipitation expected. Valley locations, likely to start as rain, will transition to snow overnight. Total snow accumulations of 3 to 10 inches with 6 to 12 inches at Lookout Pass. A period of moderate snow can be expected from 10pm through 6am Friday. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. 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. && $$ MTZ001-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Kootenai/Cabinet Region- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of a trace to 2 inches in the valleys and 3 to 5 inches above 4000 feet. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ MTZ006-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Bitterroot/Sapphire Mountains- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 8 to 13 inches. A period of moderate snow will impact the area between 10 pm and 8 am. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. 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. && $$ MTZ007-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Butte/Blackfoot Region- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches I-90 corridor and northward, while 2 to 4 inches around Butte. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 11 PM this evening to 11 AM MST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Orofino/Grangeville Region- 320 AM PST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Mixed precipitation expected. Total snow accumulations of 1 to 3 inches in the Camas Prairie and 3 to 12 inches above 4000 feet. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. 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. && $$ IDZ008-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Hells Canyon/Salmon River Region- 320 AM PST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of a trace to 2 inches HWY 95 and valleys and 3 to 9 inches above 4000 feet. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...From 4 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Missoula/Bitterroot Valleys- 420 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Potential for moderate rates of snow between 4 am and 8 am. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Travel could be affected. 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. && $$
292 WWUS45 KMSO 051758 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1058 AM MST Fri Feb 5 2021 IDZ005-006-051900- /O.EXP.KMSO.WS.W.0002.000000T0000Z-210205T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 958 AM PST Fri Feb 5 2021 ...WINTER STORM WARNING WILL EXPIRE AT 10 AM PST THIS MORNING... Snow showers will continue but the main area of heavy snow will continue to weaken. $$ MTZ002-003-061800- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ /O.CON.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ West Glacier Region-Flathead/Mission Valleys- 1058 AM MST Fri Feb 5 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Heavy snow and blowing snow possible. Total snow accumulations of 6 to 12 inches possible. East winds could gust over 40 mph and could create near whiteout conditions along US-2. Rapidly dropping temperatures could cause a rapid freeze up. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The dangerously cold wind chills as low as 40 below zero could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ043-061800- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ /O.CON.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ Potomac/Seeley Lake Region- 1058 AM MST Fri Feb 5 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 8 to 16 inches possible. East winds could gust over 40 mph and could create near whiteout conditions along Highway 200. Rapidly dropping temperatures could cause a rapid freeze up. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ004-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Clark Fork Region- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... Snow showers will continue into the afternoon. $$ MTZ001-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Kootenai/Cabinet Region- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... $$ MTZ006-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Bitterroot/Sapphire Mountains- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... Snow showers will continue into the afternoon. $$ MTZ007-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Butte/Blackfoot Region- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... Snow showers will continue into the afternoon. $$ IDZ007-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Orofino/Grangeville Region- 958 AM PST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING... Snow showers will continue into the afternoon. $$ IDZ008-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Hells Canyon/Salmon River Region- 958 AM PST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING... Snow showers will continue into the afternoon. $$ MTZ005-051900- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Missoula/Bitterroot Valleys- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... Snow showers will continue into the afternoon. $$ IDZ009-010-052000- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T2000Z/ Western Lemhi County-Eastern Lemhi County- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 1 PM MST this afternoon. * IMPACTS...Travel could be affected. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
829 WWUS45 KMSO 051951 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1251 PM MST Fri Feb 5 2021 IDZ009-010-052100- /O.EXP.KMSO.WW.Y.0011.000000T0000Z-210205T2000Z/ Western Lemhi County-Eastern Lemhi County- 1251 PM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 1 PM MST THIS AFTERNOON... $$ MTZ002-003-043-062000- /O.CON.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ West Glacier Region-Flathead/Mission Valleys- Potomac/Seeley Lake Region- 1251 PM MST Fri Feb 5 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 8 to 16 inches possible. East winds could gust over 40 mph and could create near whiteout conditions along Highway 2 and 200. Rapidly dropping temperatures could cause a rapid freeze up. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From Saturday afternoon through Sunday morning. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
230 WWUS45 KMSO 052159 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 259 PM MST Fri Feb 5 2021 MTZ002-062200- /O.UPG.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ /O.NEW.KMSO.WS.W.0003.210206T0000Z-210207T1800Z/ West Glacier Region- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST SUNDAY... * WHAT...Heavy snow and blowing snow expected. Total snow accumulations of 5 to 7 inches near West Glacier northward and 10 to 18 inches Essex to Marias Pass and the Swan Valley. An initial Arctic push Friday evening, followed by a stronger push Saturday afternoon will create very dangerous conditions. East winds could gust over 40 mph and could create near whiteout conditions along Highway 2. Quickly dropping temperatures could cause a rapid freeze up. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 5 PM this afternoon to 11 AM MST Sunday. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The dangerously cold wind chills as low as 45 below zero could cause frostbite on exposed skin in as little as 10 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. && $$ MTZ003-062200- /O.UPG.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ /O.NEW.KMSO.WS.W.0003.210206T1800Z-210207T1800Z/ Flathead/Mission Valleys- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 11 AM MST SUNDAY... * WHAT...Heavy snow and blowing expected. Total snow accumulations of 4 to 7 inches. Rapidly dropping temperatures with an Arctic front will cause wet/ slushy roads to freeze. Winds gusting over 30 MPH will aid roads in rapid refreeze along with potential white out conditions in blowing snow. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 11 AM Saturday to 11 AM MST Sunday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-062200- /O.UPG.KMSO.WS.A.0002.210206T1900Z-210207T1900Z/ /O.NEW.KMSO.WS.W.0003.210206T1800Z-210207T1800Z/ Potomac/Seeley Lake Region- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 11 AM MST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations of 14 to 20 inches. Winds gusting over 30 MPH will cause reduced visibilities and drifting of snow on roadways, especially along Highway 200. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From 11 AM Saturday to 11 AM MST Sunday. * IMPACTS...Travel could be very difficult to impossible. Patchy 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. && $$ MTZ001-062200- /O.NEW.KMSO.WW.Y.0012.210206T1800Z-210207T1800Z/ Kootenai/Cabinet Region- 259 PM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 11 AM MST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 7 inches. Temperatures will drop through the evening, possibly refreezing wet roads. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 11 AM Saturday to 11 AM MST Sunday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-062200- /O.NEW.KMSO.WS.A.0003.210206T1800Z-210208T1800Z/ Lower Clark Fork Region- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 10 inches with 12 to 18 inches over Lookout Pass and Evaro Hill possible. An Arctic boundary may stall across the area bringing a prolonged period of moderate to heavy snow. Additionally, strong winds associated with the initial front may cause reduced visibilities in blowing snow. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From Saturday morning through Monday morning. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ005-062200- /O.NEW.KMSO.WS.A.0003.210206T2100Z-210208T1800Z/ Missoula/Bitterroot Valleys- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 9 inches possible. An Arctic boundary is forecast to stall in this area bringing a prolonged period of moderate to heavy snow. Additionally, as Arctic air filters into Missoula Valley winds gusting over 30 MPH will create blowing and drifting of snow. Rapidly dropping temperatures Sunday morning, may turn wet roads icy. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ006-062200- /O.NEW.KMSO.WS.A.0003.210206T2100Z-210208T1800Z/ Bitterroot/Sapphire Mountains- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 11 to 18 inches possible. Winds could gust over 35 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ007-062200- /O.NEW.KMSO.WS.A.0003.210207T0000Z-210208T1800Z/ Butte/Blackfoot Region- 259 PM MST Fri Feb 5 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 9 to 15 inches possible, Butte to Anaconda 4 to 6 inches. East winds could gust over 40 mph and could create near whiteout conditions along Highway 12 and 200. Rapidly dropping temperatures could cause a rapid freeze up. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From Saturday afternoon through Monday morning. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ IDZ005-006-062200- /O.NEW.KMSO.WS.A.0003.210206T1800Z-210208T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 159 PM PST Fri Feb 5 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 8 inches below 3000 feet, otherwise 10 to 18 inches possible. Winds could gust as high as 35 mph. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From Saturday morning through Sunday afternoon. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 5:14 PM MST | Winter Weather Advisory | MSO | Granite, Lake, Missoula, Powell | 3 hr |
| Feb 3, 5:36 PM MST | Special Weather Statement | MSO | Missoula | 24 min |
| Feb 3, 6:27 PM MST | Special Weather Statement | MSO | Missoula | 48 min |
| Feb 4, 11:07 AM MST | Winter Weather Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 26 hr |
Nearby
Winter Storm Watches in Montana, 2021Every winter storm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.