Alert archive / Montana / Wind Advisories in 2026
Wind Advisory 6, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Apr 6, 2026, 10:40 AM MDT for 11 counties in Montana. It took effect at Apr 7, 2026, 9:00 AM MDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2026, 10:40 AM MDT (16:40 UTC)
- In effect from
- Apr 7, 2026, 9:00 AM MDT
- Expired
- Apr 7, 2026, 9:00 PM MDT
- In force
- 12 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 16:38 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
Boise Airport, ID (KBOI), launched 12:00Z, 4.7 hours before the alert went out and 425 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
- 2852 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
778 WWUS75 KMSO 061640 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 1040 AM MDT Mon Apr 6 2026 MTZ001-003-004-071645- /O.NEW.KMSO.WI.Y.0006.260407T1500Z-260408T0300Z/ Kootenai/Cabinet Region-Flathead/Mission Valleys-Lower Clark Fork Region- 1040 AM MDT Mon Apr 6 2026 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 9 PM MDT TUESDAY... * WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. Isolated stronger gusts approaching 60 mph are possible. * WHERE...Flathead/Mission Valleys, Kootenai/Cabinet Region, and Lower Clark Fork Region. * WHEN...From 9 AM to 9 PM MDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Anyone with plans on recreating on area lakes, especially Flathead Lake should plan on choppy conditions with 2 to 3 foot waves. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ MTZ002-043-071645- /O.NEW.KMSO.WI.Y.0006.260407T1500Z-260408T0300Z/ West Glacier Region-Potomac/Seeley Lake Region- 1040 AM MDT Mon Apr 6 2026 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 9 PM MDT TUESDAY... * WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. Isolated stronger gusts approaching 60 mph are possible. * WHERE...West Glacier Region and Potomac/Seeley Lake Region. * WHEN...From 9 AM to 9 PM MDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ MTZ005-071645- /O.NEW.KMSO.WI.Y.0006.260407T1500Z-260408T0300Z/ Missoula/Bitterroot Valleys- 1040 AM MDT Mon Apr 6 2026 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 9 PM MDT TUESDAY... * WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. Isolated stronger gusts approaching 60 mph are possible. The strongest wind gusts are expected in the Bitterroot Valley. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 9 AM to 9 PM MDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ MTZ006-007-071645- /O.NEW.KMSO.WI.Y.0006.260407T1500Z-260408T0300Z/ Bitterroot/Sapphire Mountains-Butte/Blackfoot Region- 1040 AM MDT Mon Apr 6 2026 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 9 PM MDT TUESDAY... * WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. Isolated stronger gusts approaching 60 mph are possible. The strongest wind gusts are expected to be along I-90 from Deerlodge to Butte and Montana 1 from Georgetown Lake to Anaconda. * WHERE...Bitterroot/Sapphire Mountains and Butte/Blackfoot Region. * WHEN...From 9 AM to 9 PM MDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this wind advisory went out at Apr 6, 4:03 AM MDT, 6 hours 37 minutes earlier.
Area forecast discussion, Apr 6, 4:03 AM MDT, 6 hours 37 minutes before
Area Forecast Discussion National Weather Service Missoula MT 403 AM MDT Mon Apr 6 2026 .DISCUSSION... KEY MESSAGES: - Peak warmth on Monday with above average temperatures through the whole forecast period. - Strong winds on Tuesday with a cold front passage. - Showery weather returns next weekend, especially in the mountains. No major changes through the next 48 hours. High temperatures today will run 15 to 20 degrees above average. A cold front will move through Tuesday and will bring strong gusty winds to the Northern Rockies. Wind advisories will likely be issued tomorrow if models hold their course. Widespread wind gusts across the northern Rockies over 30 mph are expected for most of the afternoon on Tuesday. Widespread gusts over 40 mph are expected for a few hours, and isolated damaging wind gusts over 50 mph are possible with the cold front as it moves through. Another ridge builds in for Thursday and Friday, but as southwest flow becomes established this weekend, showers and precipitation chances increase. A trough passage is possible by Sunday or Monday. && .AVIATION...VFR flight conditions are expected today. Late tonight starting around 07/06Z, winds start increasing for what is expected to be a windy day on Tuesday as a cold front moves through the region. Increased mountain wave activity is expected during the day Tuesday. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...ID...None. &&
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.