Alert archive / Idaho / Winter Storm Warnings in 2021
Winter Storm Warning 2, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Feb 4, 2021, 12:34 PM PST for Clearwater County, Idaho County, Idaho. It took effect at Feb 4, 2021, 4:00 PM PST. It was in force for 18 hr. 5 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 4, 2021, 12:34 PM PST (20:34 UTC)
- In effect from
- Feb 4, 2021, 4:00 PM PST
- Expired
- Feb 5, 2021, 10:00 AM PST
- In force
- 18 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 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 5, 8:00 AM PST | SNOW 0.5 | 3 Ene Orofino, ID | THEY THINK THE SNOW LEVEL MIGHT HAVE BEEN AROUND 1800 FEET. THEY HAD A MIX OF RAIN AND SNOW. |
| Feb 5, 9:00 AM PST | SNOW 6 | 4 Ne Orofino, ID | |
| Feb 5, 9:00 AM PST | HEAVY SNOW 10 | Elk River, ID | HEAVY WET SNOW. |
| Feb 5, 9:00 AM PST | HEAVY SNOW 11 | Cardiff, ID | 25 INCHES ON THE GROUND. |
| Feb 5, 10:00 AM PST | HEAVY SNOW 12 | Pierce, ID |
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, 8.6 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
- 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. && $$ MTZ004-051800- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T1800Z/ Lower Clark Fork Region- 134 PM MST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Mixed precipitation expected. Valley locations, likely to start as rain, will transition to snow overnight. Total snow accumulations of 3 to 10 inches with 6 to 12 inches at Lookout Pass. A period of moderate snow can be expected from 10pm through 6am Friday. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
2 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. $$ IDZ009-010-052000- /O.CON.KMSO.WW.Y.0011.000000T0000Z-210205T2000Z/ Western Lemhi County-Eastern Lemhi County- 1058 AM MST Fri Feb 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 1 PM MST this afternoon. * IMPACTS...Travel could be affected. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 4, 10:07 AM PST | Winter Weather Advisory | MSO | Clearwater, Idaho, Lemhi | 26 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.