Alert archive / Montana / Wind Advisories in 2021
Wind Advisory 10, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Oct 26, 2021, 10:54 AM MDT for 11 counties in Montana. It took effect at Oct 27, 2021, 12:00 AM MDT. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Oct 26, 2021, 10:54 AM MDT (16:54 UTC)
- In effect from
- Oct 27, 2021, 12:00 AM MDT
- Expired
- Oct 27, 2021, 4:45 PM MDT
- In force
- 17 hr
- 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 16:53 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, 4.9 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
- 911 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
978 WWUS75 KMSO 261654 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 1054 AM MDT Tue Oct 26 2021 MTZ001-280000- /O.NEW.KMSO.WI.Y.0010.211027T0600Z-211028T0000Z/ Kootenai/Cabinet Region- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT WEDNESDAY... * WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From midnight tonight to 6 PM MDT Wednesday. * 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. && $$ MTZ002-280000- /O.NEW.KMSO.WI.Y.0010.211027T0600Z-211028T0000Z/ West Glacier Region- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT WEDNESDAY... * WHAT...Southwest winds 20 to 30 mph with gusts around 40 mph expected. Gusts up to 50 mph expected above 5000 feet. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From midnight tonight to 6 PM MDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ003-280000- /O.NEW.KMSO.WI.Y.0010.211027T0600Z-211028T0000Z/ Flathead/Mission Valleys- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT WEDNESDAY... * WHAT...Southwest winds 20 to 30 mph with gusts up to 40 mph expected. Winds will be particularly gusty on Flathead Lake overnight through Wednesday morning, with wave heights of 1 to 3 feet. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From midnight tonight to 6 PM MDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Strong winds and rough waves will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ004-280000- /O.NEW.KMSO.WI.Y.0010.211027T1500Z-211028T0000Z/ Lower Clark Fork Region- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM MDT WEDNESDAY... * WHAT...West winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From 9 AM to 6 PM MDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ005-280000- /O.NEW.KMSO.WI.Y.0010.211027T1500Z-211028T0000Z/ Missoula/Bitterroot Valleys- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM MDT WEDNESDAY... * WHAT...West winds 20 to 30 mph with gusts around 40 mph expected. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 9 AM to 6 PM MDT Wednesday. * 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. && $$ MTZ006-280000- /O.NEW.KMSO.WI.Y.0010.211027T1500Z-211028T0000Z/ Bitterroot/Sapphire Mountains- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM MDT WEDNESDAY... * WHAT...West winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 9 AM to 6 PM MDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ007-280000- /O.NEW.KMSO.WI.Y.0010.211027T1500Z-211028T0000Z/ Butte/Blackfoot Region- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM MDT WEDNESDAY... * WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 9 AM to 6 PM MDT Wednesday. * 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. && $$ MTZ043-280000- /O.NEW.KMSO.WI.Y.0010.211027T1500Z-211028T0000Z/ Potomac/Seeley Lake Region- 1054 AM MDT Tue Oct 26 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM MDT WEDNESDAY... * WHAT...West winds 20 to 30 mph with gusts around 40 mph expected. Gusts around 50 mph expected above 5000 feet. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From 9 AM to 6 PM MDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
1 follow-up statement
030 WWUS75 KMSO 272245 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 445 PM MDT Wed Oct 27 2021 MTZ001>007-043-272345- /O.CAN.KMSO.WI.Y.0010.000000T0000Z-211028T0000Z/ 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- 445 PM MDT Wed Oct 27 2021 ...WIND ADVISORY IS CANCELLED... The strong gusty winds across western Montana have diminished, allowing for the Wind Advisory to be canceled. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 10:54 AM MDT | Winter Weather Advisory | MSO | Granite, Missoula, Ravalli | 22 hr |
Nearby
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.