Alert archive / Montana / Wind Advisories in 2021
Wind Advisory 6, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Aug 1, 2021, 8:16 AM MDT for 6 counties in Montana; Clearwater County, Idaho County, Idaho. It took effect at Aug 1, 2021, 2:00 PM MDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Aug 1, 2021, 8:16 AM MDT (14:16 UTC)
- In effect from
- Aug 1, 2021, 2:00 PM MDT
- Expired
- Aug 1, 2021, 10:49 PM MDT
- In force
- 9 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Flathead County, MT, Lake County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 74 km from the middle of the area, began a volume at 14:17 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, 2.3 hours before the alert went out and 123 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
- 2118 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
067 WWUS75 KMSO 011416 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 816 AM MDT Sun Aug 1 2021 MTZ001-020500- /O.NEW.KMSO.WI.Y.0006.210801T2300Z-210802T0500Z/ Kootenai/Cabinet Region- 816 AM MDT Sun Aug 1 2021 ...WIND ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 PM MDT THIS EVENING... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this evening and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * 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 PM MDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ002-020600- /O.NEW.KMSO.WI.Y.0006.210801T2200Z-210802T0600Z/ West Glacier Region- 816 AM MDT Sun Aug 1 2021 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO MIDNIGHT MDT TONIGHT... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this evening and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 4 PM this afternoon to midnight MDT tonight. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ004-020100- /O.NEW.KMSO.WI.Y.0006.210801T2000Z-210802T0100Z/ Lower Clark Fork Region- 816 AM MDT Sun Aug 1 2021 ...WIND ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 PM MDT THIS EVENING... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this afternoon and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From 2 PM this afternoon to 7 PM MDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ003-020100- /O.NEW.KMSO.WI.Y.0006.210801T2000Z-210802T0100Z/ Flathead/Mission Valleys- 816 AM MDT Sun Aug 1 2021 ...WIND ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 PM MDT THIS EVENING... * WHAT...South winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this afternoon and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 2 PM this afternoon to 7 PM MDT this evening. * IMPACTS...Sudden wind shift on Flathead Lake or Lake Mary Ronan could endanger persons using smallcraft with large waves. Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
3 follow-up statements
604 WWUS75 KMSO 020047 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 647 PM MDT Sun Aug 1 2021 MTZ004-020200- /O.EXP.KMSO.WI.Y.0006.000000T0000Z-210802T0100Z/ Lower Clark Fork Region- 647 PM MDT Sun Aug 1 2021 ...WIND ADVISORY WILL EXPIRE AT 7 PM MDT THIS EVENING... $$ MTZ003-020200- /O.EXP.KMSO.WI.Y.0006.000000T0000Z-210802T0100Z/ Flathead/Mission Valleys- 647 PM MDT Sun Aug 1 2021 ...WIND ADVISORY WILL EXPIRE AT 7 PM MDT THIS EVENING... $$ IDZ005>007-020200- /O.EXA.KMSO.WI.Y.0006.000000T0000Z-210802T0100Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- Orofino/Grangeville Region- 547 PM PDT Sun Aug 1 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM PDT THIS EVENING... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this afternoon and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, Highway 12 Lowell to Lolo Pass, Camas Prairie, Grangeville and vicinity, and Greer Grade. * WHEN...From 2 PM this afternoon to 7 PM MDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ001-020500- /O.CON.KMSO.WI.Y.0006.000000T0000Z-210802T0500Z/ Kootenai/Cabinet Region- 647 PM MDT Sun Aug 1 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this evening and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 5 PM this afternoon to 11 PM MDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ002-020600- /O.CON.KMSO.WI.Y.0006.000000T0000Z-210802T0600Z/ West Glacier Region- 647 PM MDT Sun Aug 1 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this evening and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 4 PM this afternoon to midnight MDT tonight. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
089 WWUS75 KMSO 020446 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 1046 PM MDT Sun Aug 1 2021 MTZ001-020600- /O.EXP.KMSO.WI.Y.0006.000000T0000Z-210802T0500Z/ Kootenai/Cabinet Region- 1046 PM MDT Sun Aug 1 2021 ...WIND ADVISORY WILL EXPIRE AT 11 PM MDT THIS EVENING... $$ MTZ002-020600- /O.CON.KMSO.WI.Y.0006.000000T0000Z-210802T0600Z/ West Glacier Region- 1046 PM MDT Sun Aug 1 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...South to east winds 20 to 30 mph with gusts to 45 mph expected. Showers and thunderstorms will develop by this evening and will likely contain strong gusty winds. The winds may last from a few minutes up to an hour then subside. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 4 PM this afternoon to midnight MDT tonight. * IMPACTS...Gusty winds could blow around unsecured objects like tents and trampolines. Tree limbs could be blown down and a few power outages may result. Brief extreme fire growth may occur. A few storms may produce wind gusts over 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
811 WWUS75 KMSO 020449 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 1049 PM MDT Sun Aug 1 2021 MTZ002-020600- /O.CAN.KMSO.WI.Y.0006.000000T0000Z-210802T0600Z/ West Glacier Region- 1049 PM MDT Sun Aug 1 2021 ...WIND ADVISORY IS CANCELLED... $$ MTZ001-020600- /O.CAN.KMSO.WI.Y.0006.000000T0000Z-210802T0500Z/ Kootenai/Cabinet Region- 1049 PM MDT Sun Aug 1 2021 ...WIND ADVISORY IS CANCELLED... $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 11:33 AM MDT | Flash Flood Watch | MSO | Deer Lodge, Granite, Powell, Silver Bow | 22 hr |
| Aug 1, 2:45 PM MDT | Areal Flood Advisory | MSO | Missoula | 3 hr |
| Aug 1, 3:25 PM MDT | Areal Flood Advisory | MSO | Mineral | 3 hr |
| Aug 1, 3:38 PM MDT | Special Weather Statement | MSO | Mineral | 67 min |
| Aug 1, 3:48 PM MDT | Special Weather Statement | MSO | Missoula | 42 min |
| Aug 1, 4:04 PM MDT | Special Weather Statement | MSO | Mineral | 41 min |
| Aug 1, 4:23 PM MDT | Special Weather Statement | MSO | Lake | 52 min |
| Aug 1, 4:41 PM MDT | Areal Flood Advisory | MSO | Mineral | 3 hr |
| Aug 1, 4:45 PM MDT | Areal Flood Advisory | MSO | Lake | 3 hr |
| Aug 1, 5:00 PM MDT | Special Weather Statement | MSO | Missoula | 30 min |
| Aug 1, 5:06 PM MDT | Special Weather Statement | MSO | Ravalli | 39 min |
| Aug 1, 5:29 PM MDT | Areal Flood Advisory | MSO | Ravalli | 3 hr |
| Aug 1, 5:30 PM MDT | Special Weather Statement | MSO | Lake | 45 min |
| Aug 1, 5:35 PM MDT | Special Weather Statement | MSO | Lake | 40 min |
| Aug 1, 5:42 PM MDT | Flash Flood Warning | MSO | Ravalli | 3 hr |
Nearby
Wind Advisories in Montana, 2021Wind Advisories in Idaho, 2021Every wind advisory 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.