Alert archive / Montana / Wind Chill Advisories in 2021
Wind Chill Advisory 3, NWS Missoula, MT
NWS Missoula, MT issued this wind chill advisory at Feb 13, 2021, 10:58 AM MST for 9 counties in Montana. It took effect at Feb 13, 2021, 11:32 AM MST. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Feb 13, 2021, 10:58 AM MST (17:58 UTC)
- In effect from
- Feb 13, 2021, 11:32 AM MST
- Expired
- Feb 14, 2021, 12:00 PM MST
- In force
- 24 hr
- Issued by
- NWS Missoula, MT
Counties Deer Lodge County, MT, Flathead County, MT, Granite County, MT, Lake County, MT, Missoula County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 27 km from the middle of the area, began a volume at 18:00 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, 6.0 hours before the alert went out and 222 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
- 1689 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 321 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
420 WWUS45 KMSO 131758 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1058 AM MST Sat Feb 13 2021 MTZ007-141500- /O.EXP.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ /O.NEW.KMSO.WC.Y.0003.210214T0000Z-210214T1500Z/ Butte/Blackfoot Region- 1058 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 AM MST SUNDAY... ...WIND CHILL WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 5 PM this afternoon to 8 AM MST Sunday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ002-043-141500- /O.EXP.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ /O.NEW.KMSO.WC.Y.0003.210214T0000Z-210214T1500Z/ West Glacier Region-Potomac/Seeley Lake Region- 1058 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 AM MST SUNDAY... ...WIND CHILL WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From 5 PM this afternoon to 8 AM MST Sunday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ005-141500- /O.EXP.KMSO.WC.W.0001.000000T0000Z-210213T1800Z/ /O.NEW.KMSO.WC.Y.0003.210214T0000Z-210214T1500Z/ Missoula/Bitterroot Valleys- 1058 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 AM MST SUNDAY... ...WIND CHILL WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 20 below zero. * WHERE...Missoula Valley. * WHEN...From 5 PM this afternoon to 8 AM MST Sunday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ003-141500- /O.EXP.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ /O.NEW.KMSO.WC.Y.0003.210214T0000Z-210214T1500Z/ Flathead/Mission Valleys- 1058 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 AM MST SUNDAY... ...WIND CHILL ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 20 below zero. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 5 PM this afternoon to 8 AM MST Sunday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ MTZ001-004-131900- /O.EXP.KMSO.WC.Y.0002.000000T0000Z-210213T1800Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 1058 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... Conditions have started to improve this morning. $$ IDZ007-008-140000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 958 AM PST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-140000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Western Lemhi County-Eastern Lemhi County- 1058 AM MST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to two inches. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
3 follow-up statements
394 WWUS45 KMSO 131832 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1132 AM MST Sat Feb 13 2021 MTZ002-003-005-007-043-141500- /O.EXT.KMSO.WC.Y.0003.210213T1832Z-210214T1500Z/ West Glacier Region-Flathead/Mission Valleys- Missoula/Bitterroot Valleys-Butte/Blackfoot Region- Potomac/Seeley Lake Region- 1132 AM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 8 AM MST SUNDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Butte/Blackfoot Region, Flathead/Mission Valleys, West Glacier Region, Potomac/Seeley Lake Region and Missoula Valley. * WHEN...Until 8 AM MST Sunday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IDZ007-008-140000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 1032 AM PST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-140000- /O.CON.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Western Lemhi County-Eastern Lemhi County- 1132 AM MST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to two inches. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
923 WWUS45 KMSO 132345 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 445 PM MST Sat Feb 13 2021 IDZ007-008-140045- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 345 PM PST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 PM PST THIS AFTERNOON... $$ IDZ009-010-140045- /O.EXP.KMSO.WW.Y.0016.000000T0000Z-210214T0000Z/ Western Lemhi County-Eastern Lemhi County- 445 PM MST Sat Feb 13 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... $$ MTZ002-003-005-007-043-141500- /O.CON.KMSO.WC.Y.0003.000000T0000Z-210214T1500Z/ West Glacier Region-Flathead/Mission Valleys- Missoula/Bitterroot Valleys-Butte/Blackfoot Region- Potomac/Seeley Lake Region- 445 PM MST Sat Feb 13 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST SUNDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Butte/Blackfoot Region, Flathead/Mission Valleys, West Glacier Region, Potomac/Seeley Lake Region and Missoula Valley. * WHEN...Until 8 AM MST Sunday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
657 WWUS45 KMSO 141452 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 752 AM MST Sun Feb 14 2021 MTZ002-003-141600- /O.CAN.KMSO.WC.Y.0003.000000T0000Z-210214T1500Z/ West Glacier Region-Flathead/Mission Valleys- 752 AM MST Sun Feb 14 2021 ...WIND CHILL ADVISORY IS CANCELLED... The wind has diminished this morning. $$ MTZ005-007-043-141900- /O.EXT.KMSO.WC.Y.0003.000000T0000Z-210214T1900Z/ Missoula/Bitterroot Valleys-Butte/Blackfoot Region- Potomac/Seeley Lake Region- 752 AM MST Sun Feb 14 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL NOON MST TODAY... * WHAT...Very cold wind chills. Wind chills as low as 30 below zero. * WHERE...Missoula, Butte, Highway 12 Garrison to Elliston, MacDonald Pass, Highway 200 Bonner to Greenough, and I-90 East Missoula to Bearmouth. * WHEN...Until noon MST today. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
Nearby
Wind Chill Advisories in Montana, 2021Every wind chill 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.