Alert archive / Montana / High Wind Watches in 2021
High Wind Watch 4, NWS Missoula, MT
NWS Missoula, MT issued this high wind watch at Mar 26, 2021, 1:49 PM MDT for 11 counties in Montana. It took effect at Mar 28, 2021, 3:00 PM MDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 26, 2021, 1:49 PM MDT (19:49 UTC)
- In effect from
- Mar 28, 2021, 3:00 PM MDT
- Expired
- Mar 27, 2021, 1:58 PM MDT
- In force
- Issued by
- NWS Missoula, MT
Counties Deer Lodge County, MT, Flathead County, MT, Granite County, MT, Lake County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 2 km from the middle of the area, began a volume at 19:49 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, 7.8 hours before the alert went out and 195 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
- 1911 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
665 WWUS75 KMSO 261949 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 149 PM MDT Fri Mar 26 2021 MTZ001>007-043-272000- /O.NEW.KMSO.HW.A.0004.210329T0600Z-210329T1800Z/ Kootenai/Cabinet Region-West Glacier Region- Flathead/Mission Valleys-Lower Clark Fork Region- Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Butte/Blackfoot Region-Potomac/Seeley Lake Region- 149 PM MDT Fri Mar 26 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... * WHAT...Southwest winds 30 to 40 mph with gusts up to 50 mph possible. * WHERE...Kootenai/Cabinet Region, West Glacier Region, Flathead/Mission Valleys, Lower Clark Fork Region, Missoula/Bitterroot Valleys, Bitterroot/Sapphire Mountains, Butte/Blackfoot Region and Potomac/Seeley Lake Region. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
2 follow-up statements
031 WWUS75 KMSO 270918 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 318 AM MDT Sat Mar 27 2021 MTZ001>004-280930- /O.EXT.KMSO.HW.A.0004.210328T2100Z-210329T1200Z/ Kootenai/Cabinet Region-West Glacier Region- Flathead/Mission Valleys-Lower Clark Fork Region- 318 AM MDT Sat Mar 27 2021 ...HIGH WIND WATCH NOW IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Lower Clark Fork Region, Flathead/Mission Valleys, West Glacier Region and Kootenai/Cabinet Region. * WHEN...From Sunday afternoon through late Sunday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ MTZ005>007-043-280930- /O.EXT.KMSO.HW.A.0004.210329T0000Z-210329T1800Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Butte/Blackfoot Region-Potomac/Seeley Lake Region- 318 AM MDT Sat Mar 27 2021 ...HIGH WIND WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Butte/Blackfoot Region, Bitterroot/Sapphire Mountains, Missoula/Bitterroot Valleys and Potomac/Seeley Lake Region. * WHEN...From Sunday evening through Monday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
841 WWUS75 KMSO 271958 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 158 PM MDT Sat Mar 27 2021 MTZ002-282000- /O.UPG.KMSO.HW.A.0004.210328T2100Z-210329T1200Z/ /O.NEW.KMSO.HW.W.0003.210328T2100Z-210329T1200Z/ West Glacier Region- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 65 mph expected. The combination of heavy snow and strong wind late Sunday night will produce low visibility with blowing snow and slick conditions at Marias Pass. Four to seven inches of snow is expected at the pass. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 3 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ001-282000- /O.UPG.KMSO.HW.A.0004.210328T2100Z-210329T1200Z/ /O.NEW.KMSO.HW.W.0003.210328T2100Z-210329T1200Z/ Kootenai/Cabinet Region- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 45 mph with gusts up to 60 mph expected. The strongest winds will occur late evening with the cold front passage. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 3 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ003-282000- /O.UPG.KMSO.HW.A.0004.210328T2100Z-210329T1200Z/ /O.NEW.KMSO.HW.W.0003.210328T2100Z-210329T1200Z/ Flathead/Mission Valleys- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 45 mph with gusts up to 60 mph expected. The strongest winds will accompany the cold front later in the evening. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 3 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ004-282000- /O.UPG.KMSO.HW.A.0004.210328T2100Z-210329T1200Z/ /O.NEW.KMSO.HW.W.0003.210328T2100Z-210329T1200Z/ Lower Clark Fork Region- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 45 mph with gusts up to 60 mph expected. The strongest winds will occur with the cold front passage later in the evening. A brief period of heavy snow is expected at Lookout Pass. Snow accumulations at the pass could range between 3 and 5 inches. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From 3 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ043-282000- /O.UPG.KMSO.HW.A.0004.210329T0000Z-210329T1800Z/ /O.NEW.KMSO.HW.W.0003.210329T0300Z-210329T1200Z/ Potomac/Seeley Lake Region- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 9 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 60 mph expected. Snow accumulations between 1 and 2 inches is expected with the cold front and roads could be slick near daybreak. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From 9 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ005-282000- /O.UPG.KMSO.HW.A.0004.210329T0000Z-210329T1800Z/ /O.NEW.KMSO.HW.W.0003.210329T0300Z-210329T1200Z/ Missoula/Bitterroot Valleys- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 9 PM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 55 mph expected. Higher gusts are expected between Florence and Stevensville. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 9 PM Sunday to 6 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ006-282000- /O.UPG.KMSO.HW.A.0004.210329T0000Z-210329T1800Z/ /O.NEW.KMSO.HW.W.0003.210329T0200Z-210329T1500Z/ Bitterroot/Sapphire Mountains- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM SUNDAY TO 9 AM MDT MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 65 mph expected. Gusts to 55 mph are expected at Lolo Pass and Lost Trail Pass. Between one to two hours of heavy snow, blowing snow and the strongest winds will accompany the cold front passage overnight. A dramatic temperature drop will cause roads to freeze and travel could become treacherous. Four to seven inches is expected at Lolo Pass...two to four inches is expected at Lost Trail. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 8 PM Sunday to 9 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ007-282000- /O.UPG.KMSO.HW.A.0004.210329T0000Z-210329T1800Z/ /O.NEW.KMSO.HW.W.0003.210329T0200Z-210329T1500Z/ Butte/Blackfoot Region- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM SUNDAY TO 9 AM MDT MONDAY... * WHAT...Southwest to West winds 35 to 45 mph with gusts up to 60 mph expected. Between one to two hours of heavy snow, blowing snow and the strongest winds will accompany the cold front passage overnight. A dramatic temperature drop will cause roads to freeze and travel could become treacherous. One to three inches of snowfall is expected. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 8 PM Sunday to 9 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ IDZ009-282000- /O.NEW.KMSO.HW.W.0003.210329T0600Z-210329T1500Z/ Western Lemhi County- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT SUNDAY NIGHT TO 9 AM MDT MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 60 mph expected. Between one to two hours of heavy snow, blowing snow and the strongest winds will accompany the cold front passage overnight. A dramatic temperature drop will cause roads to freeze and travel could become treacherous. Two to four inches of snow is expected at Williams Creek Summit. * WHERE...Western Lemhi County including Williams Creek Summit. * WHEN...From midnight Sunday night to 9 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ IDZ010-282000- /O.NEW.KMSO.HW.W.0003.210329T0600Z-210329T1500Z/ Eastern Lemhi County- 158 PM MDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT SUNDAY NIGHT TO 9 AM MDT MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 60 mph expected. A brief period of heavy snow will occur with the cold front. Some roadways may become slick near daybreak Monday. * WHERE...Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From midnight Sunday night to 9 AM MDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ IDZ005-282000- /O.NEW.KMSO.HW.W.0003.210329T0300Z-210329T1200Z/ Northern Clearwater Mountains- 1258 PM PDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM SUNDAY TO 5 AM PDT MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 55 mph expected. Two to four inches of snow accumulation is expected. * WHERE...Elk River, Highway 11 Pierce to Headquarters, and Pierce. * WHEN...From 8 PM Sunday to 5 AM PDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ IDZ007-282000- /O.NEW.KMSO.HW.W.0003.210329T0300Z-210329T1200Z/ Orofino/Grangeville Region- 1258 PM PDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM SUNDAY TO 5 AM PDT MONDAY... * WHAT...South to west winds 35 to 45 mph with gusts up to 60 mph expected. One to two inches of snow is expected in the Grangemont Road area. * WHERE...Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 8 PM Sunday to 5 AM PDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ IDZ006-282000- /O.NEW.KMSO.HW.W.0003.210329T0300Z-210329T1200Z/ Southern Clearwater Mountains- 1258 PM PDT Sat Mar 27 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM SUNDAY TO 5 AM PDT MONDAY... * WHAT...West winds 30 to 45 mph with gusts up to 60 mph expected. Between one to two hours of heavy snow, blowing snow and the strongest winds will accompany the cold front passage overnight. A dramatic temperature drop will cause roads to freeze and travel could become treacherous. Snow amounts will range from 2 to 7 inches. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 8 PM Sunday to 5 AM PDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 6:58 PM MDT | Special Weather Statement | MSO | Silver Bow | 62 min |
| Mar 26, 11:59 AM MDT | Fire Weather Watch | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 24 hr |
Nearby
High Wind Watches in Montana, 2021Every high wind 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.