Alert archive / Montana / High Wind Watches in 2021
High Wind Watch 5, NWS Missoula, MT
NWS Missoula, MT issued this high wind watch at Nov 14, 2021, 1:12 PM MST for 11 counties in Montana. It took effect at Nov 15, 2021, 3:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 14, 2021, 1:12 PM MST (20:12 UTC)
- In effect from
- Nov 15, 2021, 3:00 PM MST
- Expired
- Nov 15, 2021, 2:15 AM MST
- 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 20:16 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, 8.2 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
- 500 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 592 m²/s²
- 0-3 km storm-relative helicity
- 705 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
871 WWUS75 KMSO 142012 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 112 PM MST Sun Nov 14 2021 MTZ007-160200- /O.NEW.KMSO.HW.A.0005.211116T0200Z-211116T1200Z/ /O.CON.KMSO.WI.Y.0011.000000T0000Z-211115T0100Z/ Butte/Blackfoot Region- 112 PM MST Sun Nov 14 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... ...HIGH WIND WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE MONDAY NIGHT... * WHAT...For the Wind Advisory, west winds 30 to 40 mph with gusts up to 45 mph. For the High Wind Watch, southwest winds 25 to 35 mph with gusts up to 55 mph, isolated higher gusts possible. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...For the Wind Advisory, until 6 PM MST this evening. For the High Wind Watch, from Monday evening through late Monday 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. && $$ MTZ003-160200- /O.NEW.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ /O.CON.KMSO.LW.Y.0008.000000T0000Z-211115T0400Z/ Flathead/Mission Valleys- 112 PM MST Sun Nov 14 2021 ...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM MST THIS EVENING FOR FLATHEAD LAKE... ...HIGH WIND WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... * WHAT...For the Lake Wind Advisory on Flathead Lake, waves 1 to 3 feet with south winds 20 to 25 mph with gusts up to 30 mph. For the High Wind Watch, southwest winds 20 to 30 mph with gusts up to 40 mph, isolated higher gusts possible. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...For the Lake Wind Advisory, until 9 PM MST this evening. For the High Wind Watch, from Monday afternoon through Monday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ MTZ001-002-004-160200- /O.NEW.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ Kootenai/Cabinet Region-West Glacier Region- Lower Clark Fork Region- 112 PM MST Sun Nov 14 2021 ...HIGH WIND WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph, isolated higher gusts possible. * WHERE...Kootenai/Cabinet Region, West Glacier Region and Lower Clark Fork Region. * WHEN...From Monday afternoon through Monday evening. * 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. && $$ MTZ005-006-043-160200- /O.NEW.KMSO.HW.A.0005.211116T0200Z-211116T1200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 112 PM MST Sun Nov 14 2021 ...HIGH WIND WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE MONDAY NIGHT... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph, isolated higher gusts possible. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From Monday evening through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
2 follow-up statements
049 WWUS75 KMSO 150342 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 842 PM MST Sun Nov 14 2021 MTZ003-152130- /O.EXP.KMSO.LW.Y.0008.000000T0000Z-211115T0400Z/ /O.CON.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ Flathead/Mission Valleys- 842 PM MST Sun Nov 14 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... ...LAKE WIND ADVISORY WILL EXPIRE AT 9 PM MST THIS EVENING FOR FLATHEAD LAKE... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph, isolated higher gusts possible. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From Monday afternoon through Monday evening. * 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. && $$ MTZ001-002-004-152130- /O.CON.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ Kootenai/Cabinet Region-West Glacier Region- Lower Clark Fork Region- 842 PM MST Sun Nov 14 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph, isolated higher gusts possible. * WHERE...Lower Clark Fork Region, West Glacier Region and Kootenai/Cabinet Region. * WHEN...From Monday afternoon through Monday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ MTZ005>007-043-152130- /O.CON.KMSO.HW.A.0005.211116T0200Z-211116T1200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Butte/Blackfoot Region-Potomac/Seeley Lake Region- 842 PM MST Sun Nov 14 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH LATE MONDAY NIGHT... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph, isolated higher gusts possible. * WHERE...Butte/Blackfoot Region, Bitterroot/Sapphire Mountains, Missoula/Bitterroot Valleys and Potomac/Seeley Lake Region. * WHEN...From Monday evening through late Monday 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. && $$
624 WWUS75 KMSO 150915 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 215 AM MST Mon Nov 15 2021 MTZ001-003-004-160900- /O.UPG.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ /O.NEW.KMSO.HW.W.0005.211115T2200Z-211116T0900Z/ Kootenai/Cabinet Region-Flathead/Mission Valleys- Lower Clark Fork Region- 215 AM MST Mon Nov 15 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 2 AM MST TUESDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 55 mph expected. * WHERE...Kootenai/Cabinet Region, Flathead/Mission Valleys and Lower Clark Fork Region. * WHEN...From 3 PM this afternoon to 2 AM MST Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ002-160915- /O.UPG.KMSO.HW.A.0005.211115T2200Z-211116T0600Z/ /O.NEW.KMSO.HW.W.0005.211115T2200Z-211116T1500Z/ West Glacier Region- 215 AM MST Mon Nov 15 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 8 AM MST TUESDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. Wind gusts to 70 mph possible along the Continental Divide. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 3 PM this afternoon to 8 AM MST Tuesday. * 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. && $$ MTZ006-007-043-160915- /O.UPG.KMSO.HW.A.0005.211116T0200Z-211116T1200Z/ /O.NEW.KMSO.HW.W.0005.211116T0200Z-211116T1500Z/ Bitterroot/Sapphire Mountains-Butte/Blackfoot Region- Potomac/Seeley Lake Region- 215 AM MST Mon Nov 15 2021 ...HIGH WIND WARNING IN EFFECT FROM 7 PM THIS EVENING TO 8 AM MST TUESDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Bitterroot/Sapphire Mountains, Butte/Blackfoot Region and Potomac/Seeley Lake Region. * WHEN...From 7 PM this evening to 8 AM MST Tuesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ MTZ005-160915- /O.UPG.KMSO.HW.A.0005.211116T0200Z-211116T1200Z/ /O.NEW.KMSO.HW.W.0005.211116T0200Z-211116T1500Z/ Missoula/Bitterroot Valleys- 215 AM MST Mon Nov 15 2021 ...HIGH WIND WARNING IN EFFECT FROM 7 PM THIS EVENING TO 8 AM MST TUESDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Missoula/Bitterroot Valleys. The strongest winds are expected on the west side of Highway 93 from Lolo through Darby, especially near the openings of east-west aligned drainages coming out of the Bitterroot Mountains. * WHEN...From 7 PM this evening to 8 AM MST Tuesday. * 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. && $$ IDZ005-006-160800- /O.NEW.KMSO.WI.Y.0012.211116T0000Z-211116T0800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 115 AM PST Mon Nov 15 2021 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO MIDNIGHT PST TONIGHT... * WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 4 PM this afternoon to midnight PST tonight. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
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.