Alert archive / Montana / High Wind Watches in 2021
High Wind Watch 1, NWS Missoula, MT
NWS Missoula, MT issued this high wind watch at Jan 1, 2021, 3:01 PM MST for 4 counties in Montana. It took effect at Jan 3, 2021, 2:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 1, 2021, 3:01 PM MST (22:01 UTC)
- In effect from
- Jan 3, 2021, 2:00 AM MST
- Expired
- Jan 2, 2021, 1:37 PM MST
- In force
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Lake County, MT, Lincoln County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 122 km from the middle of the area, began a volume at 22:05 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, 10.0 hours before the alert went out and 135 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
- 555 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
955 WWUS75 KMSO 012201 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 301 PM MST Fri Jan 1 2021 MTZ001>003-022215- /O.NEW.KMSO.HW.A.0001.210103T0900Z-210104T0000Z/ Kootenai/Cabinet Region-West Glacier Region- Flathead/Mission Valleys- 301 PM MST Fri Jan 1 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY AFTERNOON... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Kootenai/Cabinet Region, West Glacier Region and Flathead/Mission Valleys. * WHEN...From late Saturday night through Sunday afternoon. * 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. && $$
1 follow-up statement
158 WWUS75 KMSO 022037 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 137 PM MST Sat Jan 2 2021 MTZ002-022145- /O.CAN.KMSO.HW.A.0001.210103T0900Z-210104T0000Z/ West Glacier Region- 137 PM MST Sat Jan 2 2021 ...HIGH WIND WATCH IS CANCELLED... A winter weather advisory has been issued. $$ MTZ001-003-032045- /O.UPG.KMSO.HW.A.0001.210103T0900Z-210104T0000Z/ /O.NEW.KMSO.WI.Y.0001.210103T0900Z-210104T0000Z/ Kootenai/Cabinet Region-Flathead/Mission Valleys- 137 PM MST Sat Jan 2 2021 ...WIND ADVISORY IN EFFECT FROM 2 AM TO 5 PM MST SUNDAY... * WHAT...Southwest winds 20 to 30 mph with gusts up to 40 mph expected. The strongest winds will occur during the cold front passage between 5 am to 8 am MST. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 2 AM to 5 PM MST Sunday. * 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. && $$ MTZ005-032045- /O.NEW.KMSO.WI.Y.0001.210103T1500Z-210104T0000Z/ Missoula/Bitterroot Valleys- 137 PM MST Sat Jan 2 2021 ...WIND ADVISORY IN EFFECT FROM 8 AM TO 5 PM MST SUNDAY... * WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph expected. The strongest winds will occur during the cold front passage between 8 am to 11 am MST. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 8 AM to 5 PM MST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ MTZ043-032045- /O.NEW.KMSO.WI.Y.0001.210103T1500Z-210104T0000Z/ Potomac/Seeley Lake Region- 137 PM MST Sat Jan 2 2021 ...WIND ADVISORY IN EFFECT FROM 8 AM TO 5 PM MST SUNDAY... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph expected. The strongest winds will occur during the cold front passage between 9 am to 12 pm MST. Mixed showers may cause slick conditions Sunday morning. * WHERE...Highway 200 Bonner to Greenough and I-90 East Missoula to Bearmouth. * WHEN...From 8 AM to 5 PM MST Sunday. * 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. && $$ MTZ007-032045- /O.NEW.KMSO.WI.Y.0001.210103T1500Z-210104T0000Z/ Butte/Blackfoot Region- 137 PM MST Sat Jan 2 2021 ...WIND ADVISORY IN EFFECT FROM 8 AM TO 5 PM MST SUNDAY... * WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph expected. The strongest winds will occur during the cold front passage between 9 am to 12 pm MST. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 8 AM to 5 PM MST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 1, 3:00 PM MST | Winter Storm Watch | MSO | Mineral, Missoula, Sanders | 12 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.