Alert archive / Idaho / Winter Storm Warnings in 2021
Winter Storm Warning 4, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Feb 11, 2021, 9:53 AM PST for Clearwater County, Idaho County, Idaho. It took effect at Feb 11, 2021, 1:00 PM PST. It was in force for 27 hr. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 11, 2021, 9:53 AM PST (17:53 UTC)
- In effect from
- Feb 11, 2021, 1:00 PM PST
- Expired
- Feb 12, 2021, 4:00 PM PST
- In force
- 27 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID
The radar
The Missoula radar (KMSX), 148 km from the middle of the area, began a volume at 17:55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 12, 7:00 AM PST | SNOW 4 | Grangeville, ID | 0.29 INCHES OF SNOW WATER EQUIVALENT. 7.5 INCHES SNOW DEPTH. COCORAHS STATION ID-ID-10 GRANGEVILLE. |
| Feb 12, 8:00 AM PST | SNOW 3 | Riggins, ID | CO-OP OBSERVER STATION RGGI1 RIGGINS. |
| Feb 12, 9:04 AM PST | SNOW 6.8 | 2 W Grangeville, ID | IT LET UP A LITTLE BIT AROUND 5 AM, BUT NOW IT IS HALF MILE WITH MODERATE OR HEAVY SNOW. NOT MUCH WIND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 5.9 hours before the alert went out and 172 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
- 1784 m above ground
- 0-6 km bulk shear
- 109 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
774 WWUS45 KMSO 111753 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1053 AM MST Thu Feb 11 2021 MTZ005-121800- /O.CAN.KMSO.WW.Y.0017.000000T0000Z-210211T1800Z/ /O.UPG.KMSO.WC.Y.0002.000000T0000Z-210211T1900Z/ /O.EXB.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.EXB.KMSO.WW.Y.0016.210212T0000Z-210213T0000Z/ Missoula/Bitterroot Valleys- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING IN EFFECT UNTIL 2 PM MST FRIDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...For the Wind Chill Warning, dangerously cold wind chills. Wind chills as low as 35 below zero. For the Winter Weather Advisory, snow expected. Total snow accumulations of 1 to 3 inches. Blowing and drifting of snow will also occur. * WHERE...For wind chills: all of the Missoula and Bitterroot valleys will experience dangerous wind chill levels. For snowfall: areas from Stevensville south through Darby will experience the greatest impacts from snow. Blowing snow will impact all areas within both valleys. * WHEN...For the Wind Chill Warning, until 2 PM MST Friday. For the Winter Weather Advisory, from 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. 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. && $$ MTZ043-121800- /O.CAN.KMSO.WW.Y.0017.000000T0000Z-210211T1800Z/ /O.EXT.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ Potomac/Seeley Lake Region- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 2 PM MST FRIDAY... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Dangerously cold wind chills. Wind chills as low as 60 below zero. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ IDZ007-121800- /O.UPG.KMSO.WW.Y.0016.210211T2100Z-210212T1800Z/ /O.NEW.KMSO.WS.W.0004.210211T2100Z-210212T1800Z/ Orofino/Grangeville Region- 953 AM PST Thu Feb 11 2021 ...WINTER STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 AM PST FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches. Blowing and drifting snow will also occur. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 1 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. 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. && $$ MTZ006-121800- /O.EXB.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.EXB.KMSO.WW.Y.0016.210212T0000Z-210213T0000Z/ Bitterroot/Sapphire Mountains- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING IN EFFECT UNTIL 2 PM MST FRIDAY... ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...For the Wind Chill Warning, dangerously cold wind chills. Wind chills as low as 40 below zero. For the Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 5 inches. Blowing and drifting snow will also occur. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...For the Wind Chill Warning, until 2 PM MST Friday. For the Winter Weather Advisory, from 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-121800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ West Glacier Region- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ007-121800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ Butte/Blackfoot Region- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ003-121800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ Flathead/Mission Valleys- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ IDZ006-121800- /O.EXB.KMSO.WW.Y.0016.210211T2100Z-210213T0000Z/ Southern Clearwater Mountains- 953 AM PST Thu Feb 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 PM PST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 5 to 7 inches. Blowing and drifting snow will also occur. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 1 PM this afternoon to 4 PM PST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-121800- /O.EXB.KMSO.WW.Y.0016.210211T2100Z-210213T0000Z/ Western Lemhi County-Eastern Lemhi County- 1053 AM MST Thu Feb 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From 2 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. 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. && $$ IDZ008-121800- /O.EXT.KMSO.WW.Y.0016.210211T2100Z-210213T0000Z/ Lower Hells Canyon/Salmon River Region- 953 AM PST Thu Feb 11 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 PM PST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...From 1 PM this afternoon to 4 PM PST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-004-121800- /O.EXT.KMSO.WC.Y.0002.000000T0000Z-210212T2100Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 1053 AM MST Thu Feb 11 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Very cold wind chills. Wind chills as low as 45 below zero. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
3 follow-up statements
947 WWUS45 KMSO 120314 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 814 PM MST Thu Feb 11 2021 IDZ008-130000- /O.UPG.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ /O.EXB.KMSO.WS.W.0004.000000T0000Z-210213T0000Z/ Lower Hells Canyon/Salmon River Region- 714 PM PST Thu Feb 11 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 4 PM PST FRIDAY... * WHAT...Heavy snow. Additional snow accumulations of 5 to 7 inches, and 8 to 10 inches over Whitebird Hill. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...Until 4 PM PST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-130000- /O.CON.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Missoula/Bitterroot Valleys- 814 PM MST Thu Feb 11 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...For the Wind Chill Warning, dangerously cold wind chills. Wind chills as low as 35 below zero. For the Winter Weather Advisory, snow expected. Total snow accumulations of 1 to 3 inches. Blowing and drifting of snow will also occur. * WHERE...For wind chills: all of the Missoula and Bitterroot valleys will experience dangerous wind chill levels. For snowfall: areas from Stevensville south through Darby will experience the greatest impacts from snow. Blowing snow will impact all areas within both valleys. * WHEN...For the Wind Chill Warning, until 2 PM MST Friday. For the Winter Weather Advisory, from 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. 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. && $$ MTZ006-130000- /O.CON.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Bitterroot/Sapphire Mountains- 814 PM MST Thu Feb 11 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...For the Wind Chill Warning, dangerously cold wind chills. Wind chills as low as 40 below zero. For the Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 5 inches. Blowing and drifting snow will also occur. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...For the Wind Chill Warning, until 2 PM MST Friday. For the Winter Weather Advisory, from 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-121800- /O.CON.KMSO.WS.W.0004.000000T0000Z-210212T1800Z/ Orofino/Grangeville Region- 714 PM PST Thu Feb 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST FRIDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches. Blowing and drifting snow will also occur. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 1 PM this afternoon to 10 AM PST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. 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. && $$ MTZ002-043-122100- /O.CON.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ West Glacier Region-Potomac/Seeley Lake Region- 814 PM MST Thu Feb 11 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ007-122100- /O.CON.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ Butte/Blackfoot Region- 814 PM MST Thu Feb 11 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ003-122100- /O.CON.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ Flathead/Mission Valleys- 814 PM MST Thu Feb 11 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ IDZ006-130000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Southern Clearwater Mountains- 714 PM PST Thu Feb 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 5 to 7 inches. Blowing and drifting snow will also occur. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 1 PM this afternoon to 4 PM PST Friday. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. 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. && $$ IDZ009-010-130000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Western Lemhi County-Eastern Lemhi County- 814 PM MST Thu Feb 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From 2 PM this afternoon to 5 PM MST Friday. * IMPACTS...Travel could be affected. The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-004-122100- /O.CON.KMSO.WC.Y.0002.000000T0000Z-210212T2100Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 814 PM MST Thu Feb 11 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST FRIDAY... * WHAT...Very cold wind chills. Wind chills as low as 45 below zero. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 2 PM MST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
696 WWUS45 KMSO 121746 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1046 AM MST Fri Feb 12 2021 MTZ006-130000- /O.CAN.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Bitterroot/Sapphire Mountains- 1046 AM MST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WIND CHILL WARNING IS CANCELLED... * WHAT...Snow. Total snow accumulations of 3 to 5 inches. Blowing and drifting snow will also occur. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be affected. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ003-131800- /O.CAN.KMSO.WC.W.0001.000000T0000Z-210212T2100Z/ /O.EXB.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ Flathead/Mission Valleys- 1046 AM MST Fri Feb 12 2021 ...WIND CHILL ADVISORY IN EFFECT UNTIL 11 AM MST SATURDAY... ...WIND CHILL WARNING IS CANCELLED... * WHAT...Very cold wind chills. Wind chills as low as 20 below zero. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The very cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ005-131800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Missoula/Bitterroot Valleys- 1046 AM MST Fri Feb 12 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 11 AM MST SATURDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...For the Wind Chill Warning, dangerously cold wind chills as low as 35 below zero. For the Winter Weather Advisory, snow. Additional snow accumulations of one to two inches from Stevensville south through Darby. * WHERE...Missoula/Bitterroot Valleys. * WHEN...For the Wind Chill Warning, until 11 AM MST Saturday. For the Winter Weather Advisory, until 5 PM MST this afternoon for Stevensville south through Darby. * IMPACTS...Travel could be affected. The very cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-130000- /O.EXT.KMSO.WS.W.0004.000000T0000Z-210213T0000Z/ Orofino/Grangeville Region- 946 AM PST Fri Feb 12 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Total snow accumulations of 5 to 7 inches. Blowing and drifting snow will also occur. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Travel could be affected. Blowing snow could significantly reduce visibility and cause snow drifts over roadways. 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. && $$ MTZ002-043-131800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ West Glacier Region-Potomac/Seeley Lake Region- 1046 AM MST Fri Feb 12 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ007-131800- /O.EXT.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ Butte/Blackfoot Region- 1046 AM MST Fri Feb 12 2021 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ IDZ008-130000- /O.CON.KMSO.WS.W.0004.000000T0000Z-210213T0000Z/ Lower Hells Canyon/Salmon River Region- 946 AM PST Fri Feb 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Heavy snow. Snow accumulations of 5 to 7 inches, and 8 to 10 inches over Whitebird Hill. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-004-131800- /O.EXT.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 1046 AM MST Fri Feb 12 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Very cold wind chills. Wind chills as low as 20 below zero. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, 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 Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IDZ006-130000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Southern Clearwater Mountains- 946 AM PST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to two inches. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Travel could be affected. The very cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-130000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Western Lemhi County-Eastern Lemhi County- 1046 AM MST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Total snow accumulations of 3 to 5 inches. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 PM MST this afternoon. * 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. && $$
619 WWUS45 KMSO 122351 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 451 PM MST Fri Feb 12 2021 IDZ008-140000- /O.EXP.KMSO.WS.W.0004.000000T0000Z-210213T0000Z/ /O.EXB.KMSO.WW.Y.0016.210213T0000Z-210214T0000Z/ Lower Hells Canyon/Salmon River Region- 351 PM PST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM PST SATURDAY... ...WINTER STORM WARNING WILL EXPIRE AT 4 PM PST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 3 to 5 inches with 6 to 8 inches over Whitebird Hill. Periods of light to moderate snow will continue overnight. Snow intensities are expected to increase again on Saturday morning. * WHERE...Lower Hells Canyon/Salmon River Region. * WHEN...Winter Storm Warning ending at 4pm PST this afternoon, replaced by a Winter Weather Advisory until 4 PM PST Saturday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-140000- /O.EXP.KMSO.WS.W.0004.000000T0000Z-210213T0000Z/ /O.EXB.KMSO.WW.Y.0016.210213T0000Z-210214T0000Z/ Orofino/Grangeville Region- 351 PM PST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM PST SATURDAY... ...WINTER STORM WARNING WILL EXPIRE AT 4 PM PST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 3 to 5 inches. Periods of light to moderate snow will continue overnight. Snow intensities are expected to increase again on Saturday morning. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...Winter Storm Warning ending at 4pm PST this afternoon, replaced by a Winter Weather Advisory until 4 PM PST Saturday. * 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. && $$ MTZ005-131800- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ /O.CON.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ Missoula/Bitterroot Valleys- 451 PM MST Fri Feb 12 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...Missoula/Bitterroot Valleys. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ IDZ006-130100- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Southern Clearwater Mountains- 351 PM PST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 PM PST THIS AFTERNOON... Periods of light snow will continue into Saturday. A few inches of additional accumulation are possible. $$ IDZ009-010-130100- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Western Lemhi County-Eastern Lemhi County- 451 PM MST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... Periods of light snow will continue into Saturday. A few inches of additional accumulation are possible. $$ MTZ006-130100- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210213T0000Z/ Bitterroot/Sapphire Mountains- 451 PM MST Fri Feb 12 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... Periods of light snow will continue into Saturday. A few inches of additional accumulation are possible. $$ MTZ002-043-131800- /O.CON.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ West Glacier Region-Potomac/Seeley Lake Region- 451 PM MST Fri Feb 12 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ007-131800- /O.CON.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ Butte/Blackfoot Region- 451 PM MST Fri Feb 12 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 55 below zero. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ MTZ003-131800- /O.CON.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ Flathead/Mission Valleys- 451 PM MST Fri Feb 12 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Very cold wind chills. Wind chills as low as 20 below zero. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...Until 11 AM MST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ001-004-131800- /O.CON.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 451 PM MST Fri Feb 12 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Very cold wind chills. Wind chills as low as 20 below zero. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, 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 Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 11, 2:31 AM PST | Winter Weather Advisory | MSO | Clearwater, Idaho, Lemhi | 61 hr |
Nearby
Winter Storm Warnings in Idaho, 2021Every winter storm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.