Alert archive / Montana / Winter Weather Advisories in 2021
Winter Weather Advisory 76, NWS Missoula, MT
NWS Missoula, MT issued this winter weather advisory at Dec 23, 2021, 10:53 AM PST for Clearwater County, Idaho County, Lemhi County, Idaho; 11 counties in Montana. It took effect at Dec 23, 2021, 11:00 AM PST. It was in force for 47 hr.
The area
The counties it named.
The facts
- Issued
- Dec 23, 2021, 10:53 AM PST (18:53 UTC)
- In effect from
- Dec 23, 2021, 11:00 AM PST
- Expired
- Dec 25, 2021, 10:00 AM PST
- In force
- 47 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Lemhi County, ID, 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), 32 km from the middle of the area, began a volume at 18:53 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, 6.9 hours before the alert went out and 194 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
- 807 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
208 WWUS45 KMSO 231853 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1153 AM MST Thu Dec 23 2021 MTZ001-240300- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T0300Z/ Kootenai/Cabinet Region- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow expected. A rapid temperature drop is expected behind the cold front with brief periods of heavy snow. Lingering light snow showers through tonight. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ MTZ002-241800- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T1800Z/ West Glacier Region- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow expected. Rapid temperature drop behind cold front with brief periods of heavy snow. Lingering light snow showers through tonight. Total snow accumulations of 2 to 6 inches. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ003-240300- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T0300Z/ Flathead/Mission Valleys- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow expected. Temperatures will fall behind cold front with a brief period of heavy snow. Lingering snow showers through tonight. Total snow accumulations of of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ MTZ004-241800- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T1800Z/ Lower Clark Fork Region- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow expected. Rapid temperature drops behind cold front with brief periods of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 1 to 3 inches with 7 to 9 inches on Lookout Pass. Winds gusting as high as 35 mph. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ005-240300- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T0300Z/ Northern Clearwater Mountains- 1053 AM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM PST THIS EVENING... * WHAT...Snow expected. Rapid temperature drops behind cold front with brief periods of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Elk River, Highway 11 Pierce to Headquarters, and Pierce. * WHEN...Until 7 PM PST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ IDZ007-008-240300- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T0300Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 1053 AM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM PST THIS EVENING... * WHAT...Snow expected. Rapid temperature drop behind cold front with a brief period of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 1 to 3 inches. Winds could gust as high as 45 mph. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...Until 7 PM PST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ006-241800- /O.NEW.KMSO.WW.Y.0076.211223T1900Z-211224T1800Z/ Southern Clearwater Mountains- 1053 AM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST FRIDAY... * WHAT...Snow expected. Rapid temperature drops behind cold front with brief periods of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 2 to 5 inches with 4 to 8 inches on Lolo Pass. Winds gusting as high as 35 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST Friday. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ MTZ006-240600- /O.NEW.KMSO.WW.Y.0076.211223T2100Z-211224T0600Z/ Bitterroot/Sapphire Mountains- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. Rapid temperature drop behind cold front with a brief period of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 3 to 6 inches. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-240600- /O.NEW.KMSO.WW.Y.0076.211223T2100Z-211224T0600Z/ Missoula/Bitterroot Valleys- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. A rapid temperature drop is expected behind the cold front with a brief period of heavy snow. Lingering snow showers through tonight. Total snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Missoula/Bitterroot Valleys. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ MTZ043-240600- /O.NEW.KMSO.WW.Y.0076.211223T2100Z-211224T0600Z/ Potomac/Seeley Lake Region- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. A rapid temperature drop behind the cold front with brief periods of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-240600- /O.NEW.KMSO.WW.Y.0076.211223T2100Z-211224T0600Z/ Butte/Blackfoot Region- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. A rapid temperature drop will accompany the cold front with brief periods of heavy snow. Lingering snow showers through tonight. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 50 mph. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. 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. && $$ IDZ009-010-241200- /O.NEW.KMSO.WW.Y.0076.211224T0000Z-211224T1200Z/ Western Lemhi County-Eastern Lemhi County- 1153 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST FRIDAY... * WHAT...Snow expected. Rapid temperature drop behind cold front with a brief period of heavy snow. Lingering light snow showers tonight. Total snow accumulations of 1 to 2 inches. Winds gusting as high as 40 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From 5 PM this afternoon to 5 AM MST Friday. * IMPACTS...Travel could be affected. Visibility could decrease to one-quarter mile under brief, heavy snow squalls. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
10 follow-up statements
204 WWUS45 KMSO 240243 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 743 PM MST Thu Dec 23 2021 MTZ003-240345- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0300Z/ Flathead/Mission Valleys- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 8 PM MST THIS EVENING... Scattered snow showers will continue with isolated icy spots. $$ IDZ005-240345- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0300Z/ Northern Clearwater Mountains- 643 PM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 PM PST THIS EVENING... Scattered snow showers will continue with isolated icy spots. $$ IDZ007-008-240345- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0300Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 643 PM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 PM PST THIS EVENING... Scattered snow showers will continue with isolated icy spots but the heaviest showers have past to the east. $$ MTZ001-241200- /O.EXT.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Kootenai/Cabinet Region- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 AM MST FRIDAY... * WHAT...Snow. Bands of snow will continue into early Friday. Snow amounts will be variable and generally up to two inches with higher amounts under persistent snow bands. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...Until 5 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ West Glacier Region- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST Friday. * 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. && $$ MTZ004-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Lower Clark Fork Region- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches with heavier amounts under persistent snow bands. Winds gusting as high as 35 mph for the higher elevations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ006-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Southern Clearwater Mountains- 643 PM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST FRIDAY... * WHAT...Snow. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST Friday. * 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. && $$ MTZ006-240600- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Bitterroot/Sapphire Mountains- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-240600- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Missoula/Bitterroot Valleys- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of up to one inch, higher amounts possible under persistent snow bands. * WHERE...Missoula/Bitterroot Valleys. * WHEN...Until 11 PM MST this evening. * 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. && $$ MTZ043-240600- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Potomac/Seeley Lake Region- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of up to two inches, heavier amounts under persistent snow bands. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-240600- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Butte/Blackfoot Region- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * 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. && $$ IDZ009-010-241200- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Western Lemhi County-Eastern Lemhi County- 743 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
466 WWUS45 KMSO 240537 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1037 PM MST Thu Dec 23 2021 MTZ006-240645- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Bitterroot/Sapphire Mountains- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... $$ MTZ005-240645- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Missoula/Bitterroot Valleys- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... $$ MTZ043-240645- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Potomac/Seeley Lake Region- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... $$ MTZ007-240645- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T0600Z/ Butte/Blackfoot Region- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... $$ MTZ001-241200- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Kootenai/Cabinet Region- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... * WHAT...Snow. Bands of snow will continue into early Friday. Snow amounts will be variable and generally up to two inches with higher amounts under persistent snow bands. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...Until 5 AM MST Friday. * 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. && $$ MTZ002-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ West Glacier Region- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Lower Clark Fork Region- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches with heavier amounts under persistent snow bands. Winds gusting as high as 35 mph for the higher elevations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Friday. * 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. && $$ IDZ006-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Southern Clearwater Mountains- 937 PM PST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST FRIDAY... * WHAT...Snow. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST Friday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-241200- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Western Lemhi County-Eastern Lemhi County- 1037 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 AM MST Friday. * 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. && $$
022 WWUS45 KMSO 240952 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 252 AM MST Fri Dec 24 2021 IDZ006-241100- /O.CAN.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Southern Clearwater Mountains- 152 AM PST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Scattered snow showers will continue through the morning hours; however, the bulk of accumulating snow has ended. $$ MTZ001-251000- /O.NEW.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Kootenai/Cabinet Region- 252 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...For the first Winter Weather Advisory, snow. Additional snow accumulations of around one inch. For the second Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 6 inches in valleys and 8 to 12 inches in the mountains. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...For the first Winter Weather Advisory, until 5 AM MST early this morning. For the second Winter Weather Advisory, from 2 PM this afternoon to 11 AM MST Saturday. * 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. && $$ MTZ002-251000- /O.NEW.KMSO.WS.A.0010.211225T0000Z-211225T1800Z/ /O.EXT.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ West Glacier Region- 252 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WATCH IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 2 to 4 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 10 inches from Bad Rock Canyon to Essex, with 8 to 16 inches from Essex to Marias Pass. Total snow accumulations of 3 to 6 inches for Highway 83 Bigfork to Swan Lake. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Weather Advisory, until 5 PM MST this afternoon. For the Winter Storm Watch, from this afternoon through Saturday morning. * IMPACTS...Travel could be very difficult. A period of heavier snowfall will begin late this evening and will continue into Saturday morning. Blowing and drifting of snow is possible from Essex to Marias Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Lower Clark Fork Region- 252 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches over Lookout Pass, with up to one inch across valley locations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST this morning. * 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. && $$ IDZ009-010-241200- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Western Lemhi County-Eastern Lemhi County- 252 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 5 AM MST early this morning. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
900 WWUS45 KMSO 241149 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 449 AM MST Fri Dec 24 2021 MTZ001-251200- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ /O.CON.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ Kootenai/Cabinet Region- 449 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST SATURDAY... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches in valleys and 8 to 12 inches in the mountains. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...2 PM this afternoon to 11 AM MST Saturday. * 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. && $$ IDZ009-010-241300- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211224T1200Z/ Western Lemhi County-Eastern Lemhi County- 449 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS MORNING... $$ MTZ002-251200- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ /O.CON.KMSO.WS.A.0010.211225T0000Z-211225T1800Z/ West Glacier Region- 449 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 2 to 4 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 10 inches from Bad Rock Canyon to Essex, with 8 to 16 inches from Essex to Marias Pass. Total snow accumulations of 3 to 6 inches for Highway 83 Bigfork to Swan Lake. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Weather Advisory, until 5 PM MST this afternoon. For the Winter Storm Watch, from this afternoon through Saturday morning. * IMPACTS...Travel could be very difficult. A period of heavier snowfall will begin late this evening and will continue into Saturday morning. Blowing and drifting of snow is possible from Essex to Marias Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Lower Clark Fork Region- 449 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches over Lookout Pass, with up to one inch across valley locations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST this morning. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
573 WWUS45 KMSO 241512 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 812 AM MST Fri Dec 24 2021 MTZ002-251515- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ /O.CON.KMSO.WS.A.0010.211225T0000Z-211225T1800Z/ West Glacier Region- 812 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SATURDAY MORNING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 2 to 4 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 10 inches from Bad Rock Canyon to Essex, with 8 to 16 inches from Essex to Marias Pass. Total snow accumulations of 3 to 6 inches for Highway 83 Bigfork to Swan Lake. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Weather Advisory, until 5 PM MST this afternoon. For the Winter Storm Watch, from this afternoon through Saturday morning. * IMPACTS...Travel could be very difficult. A period of heavier snowfall will begin late this evening and will continue into Saturday morning. Blowing and drifting of snow is possible from Essex to Marias Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-251515- /O.CON.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ Kootenai/Cabinet Region- 812 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches in valleys and 8 to 12 inches in the mountains. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...2 PM this afternoon to 11 AM MST Saturday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-241800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211224T1800Z/ Lower Clark Fork Region- 812 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches over Lookout Pass, with up to one inch across valley locations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST this morning. * 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. && $$
571 WWUS45 KMSO 241747 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1047 AM MST Fri Dec 24 2021 MTZ004-251800- /O.EXT.KMSO.WW.Y.0076.000000T0000Z-211225T1800Z/ Lower Clark Fork Region- 1047 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 4 to 8 inches over Lookout Pass, with 2 to 4 inches across valley locations near the Idaho border. Up to 2 inches elsewhere. * WHERE...Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-251800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ /O.CON.KMSO.WS.A.0010.211225T0000Z-211225T1800Z/ West Glacier Region- 1047 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SATURDAY MORNING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 2 to 4 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 6 to 10 inches from Bad Rock Canyon to Essex, with 8 to 16 inches from Essex to Marias Pass. Total snow accumulations of 3 to 6 inches for Highway 83 Bigfork to Swan Lake. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Weather Advisory, until 5 PM MST this afternoon. For the Winter Storm Watch, from this afternoon through Saturday morning. * IMPACTS...Travel could be very difficult. A period of heavier snowfall will begin late this evening and will continue into Saturday morning. Blowing and drifting of snow is possible from Essex to Marias Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-251800- /O.CON.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ Kootenai/Cabinet Region- 1047 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches in valleys and 8 to 12 inches in the mountains. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...2 PM this afternoon to 11 AM MST Saturday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
589 WWUS45 KMSO 241932 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1232 PM MST Fri Dec 24 2021 MTZ002-251800- /O.UPG.KMSO.WS.A.0010.211225T0000Z-211225T1800Z/ /O.NEW.KMSO.WS.W.0014.211225T0000Z-211225T1800Z/ /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ West Glacier Region- 1232 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 5 to 8 inches along Hwy 2 to about West Glacier, then 8 to 12 inches from West Glacier to Marias Pass. For the Winter Weather Advisory, snow. Additional snow accumulations of up to one inch. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Storm Warning, from 5 PM this afternoon to 11 AM MST Saturday. For the Winter Weather Advisory, until 5 PM MST this afternoon. * IMPACTS...Travel could be affected. The cold wind chills as low as 20 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. 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. && $$ MTZ001-251945- /O.NEW.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ /O.CON.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ Kootenai/Cabinet Region- 1232 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... ...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 9 inches. For the Winter Storm Watch, snow possible, along with blowing snow and a sudden drop in temperature to below 0 degrees. Total snow accumulations of 2 to 4 inches possible. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...For the Winter Weather Advisory, until 11 AM MST Saturday. For the Winter Storm Watch, from late Saturday night through Sunday evening. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-251800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T1800Z/ Lower Clark Fork Region- 1232 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 4 to 8 inches over Lookout Pass, with 2 to 4 inches across valley locations near the Idaho border. Up to 2 inches elsewhere. * WHERE...Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Saturday. * 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. && $$ MTZ003-251945- /O.NEW.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ Flathead/Mission Valleys- 1232 PM MST Fri Dec 24 2021 ...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...Snow. Total snow accumulations of up to two inches possible, along with blowing snow and a sudden drop in temperature to single digits. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ007-251945- /O.NEW.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ Butte/Blackfoot Region- 1232 PM MST Fri Dec 24 2021 ...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations of up to two inches possible. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
602 WWUS45 KMSO 241937 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1237 PM MST Fri Dec 24 2021 MTZ002-251800- /O.CON.KMSO.WS.W.0014.211225T0000Z-211225T1800Z/ /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T0000Z/ West Glacier Region- 1237 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 5 to 8 inches along Hwy 2 to about West Glacier, then 8 to 12 inches from West Glacier to Marias Pass. For the Winter Weather Advisory, snow. Additional snow accumulations of up to one inch. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Storm Warning, from 5 PM this afternoon to 11 AM MST Saturday. For the Winter Weather Advisory, until 5 PM MST this afternoon. * IMPACTS...Travel could be affected. The cold wind chills as low as 20 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-251945- /O.CON.KMSO.WW.Y.0077.211224T2100Z-211225T1800Z/ /O.CON.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ Kootenai/Cabinet Region- 1237 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 9 inches. For the Winter Storm Watch, snow possible, along with blowing snow and a sudden drop in temperature to below 0 degrees. Total snow accumulations of 2 to 4 inches possible. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...For the Winter Weather Advisory, until 11 AM MST Saturday. For the Winter Storm Watch, from late Saturday night through Sunday evening. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-251800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T1800Z/ Lower Clark Fork Region- 1237 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 4 to 8 inches over Lookout Pass, with 2 to 4 inches across valley locations near the Idaho border. Up to 2 inches elsewhere. * WHERE...Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel could be affected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ003-251945- /O.CON.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ Flathead/Mission Valleys- 1237 PM MST Fri Dec 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...Snow. Total snow accumulations of 1 to 4 inches possible, along with blowing snow and a sudden drop in temperature to single digits. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ007-251945- /O.CON.KMSO.WS.A.0011.211226T0900Z-211227T0600Z/ Butte/Blackfoot Region- 1237 PM MST Fri Dec 24 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... * WHAT...Snow. Total snow accumulations of 1 to 4 inches possible, along with blowing snow and a sudden drop in temperature below 0 degrees * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Ovando, Homestake Pass, and MacDonald Pass. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
111 WWUS45 KMSO 250951 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 251 AM MST Sat Dec 25 2021 MTZ002-251800- /O.CON.KMSO.WS.W.0014.000000T0000Z-211225T1800Z/ West Glacier Region- 251 AM MST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 3 to 6 inches. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST this morning. * IMPACTS...Travel could be very difficult. Areas of blowing and drifting snow are expected from Essex to Marias Pass. The cold wind chills as low as 20 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-261000- /O.EXT.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ /O.CON.KMSO.WW.Y.0077.000000T0000Z-211225T1800Z/ Kootenai/Cabinet Region- 251 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 1 to 3 inches. For the Winter Storm Watch, heavy snow possible, along with blowing snow, and a sudden drop in temperature to below 0 degrees. Total snow accumulations of 2 to 4 inches possible. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from late tonight through Sunday evening. * IMPACTS...Travel could be very difficult to impossible. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-251800- /O.CON.KMSO.WW.Y.0076.000000T0000Z-211225T1800Z/ Lower Clark Fork Region- 251 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 2 to 5 inches from Haugan to Lookout Pass, with up to one inch across valley locations. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST this morning. * 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. && $$ MTZ003-261000- /O.EXT.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ Flathead/Mission Valleys- 251 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations of 1 to 4 inches possible, along with blowing snow, and a sudden drop in temperature to single digits. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From late tonight through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ007-261000- /O.EXT.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ Butte/Blackfoot Region- 251 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations of 1 to 4 inches possible, along with blowing snow, and a sudden drop in temperature below 0 degrees * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From late tonight through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
678 WWUS45 KMSO 251800 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1100 AM MST Sat Dec 25 2021 MTZ002-261800- /O.EXP.KMSO.WS.W.0014.000000T0000Z-211225T1800Z/ /O.NEW.KMSO.WW.Y.0078.211225T1800Z-211226T0000Z/ /O.NEW.KMSO.WC.Y.0004.211226T0000Z-211226T1800Z/ West Glacier Region- 1100 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WIND CHILL ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST SUNDAY... ...WINTER STORM WARNING HAS EXPIRED... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of 1 to 3 inches. For the Wind Chill Advisory, very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...For the Winter Weather Advisory, until 5 PM MST this afternoon. For the Wind Chill Advisory, from 5 PM this afternoon to 11 AM MST Sunday. * IMPACTS...Travel could be affected. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-261800- /O.EXP.KMSO.WW.Y.0077.000000T0000Z-211225T1800Z/ /O.CON.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ Kootenai/Cabinet Region- 1100 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... ...WINTER WEATHER ADVISORY HAS EXPIRED... * WHAT...Heavy snow possible. Total snow accumulations of 2 to 4 inches possible. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from late tonight through Sunday evening. * IMPACTS...Travel could be very difficult. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ004-251900- /O.EXP.KMSO.WW.Y.0076.000000T0000Z-211225T1800Z/ Lower Clark Fork Region- 1100 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY HAS EXPIRED... $$ MTZ003-261800- /O.CON.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ Flathead/Mission Valleys- 1100 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations of 1 to 4 inches possible, along with blowing snow, and a sudden drop in temperature to single digits. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From late tonight through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MTZ007-261800- /O.CON.KMSO.WS.A.0011.211226T1200Z-211227T0600Z/ Butte/Blackfoot Region- 1100 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations of 1 to 4 inches possible, along with blowing snow, and a sudden drop in temperature below 0 degrees. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From late tonight through Sunday evening. * IMPACTS...Travel could be affected. The cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
What forecasters said that day
The local office's own words before this winter weather 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 winter weather advisory went out at Dec 23, 2:11 AM PST, 8 hours 42 minutes earlier.
Area forecast discussion, Dec 23, 2:11 AM PST, 8 hours 42 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
311 AM MST Thu Dec 23 2021
...Snow Squalls Expected This Afternoon and Evening...
...Progressively Colder and Snowy This Weekend...
.DISCUSSION...A prolonged period of active winter weather will
impact the Northern Rockies through next week. An amplified ridge
of high pressure centered south of the Aleutian Islands will
maintain a longwave trough across British Columbia, the Pacific
Northwest, and Northern Rockies. As series of pacific low pressure
systems will dive southeast across the Pacific Northwest, sending
pulses of snowfall across the area through this upcoming weekend.
Confidence remains high for arctic air to move across the
Continental Divide by early next week.
Scattered shower activity will continue across the
Northern Rockies this morning as a warm front moves through the
area. A wintry mix of freezing rain and snow will continue to
impact areas along and north of the I-90 corridor across northwest
Montana through the mid-morning hours. Watch for areas of black
ice on roadways as you head out for the morning commute.
A strong pacific cold front will track across the Northern
Rockies this afternoon and evening. Confidence is increasing for
snow squalls to develop along the leading edge of the cold front
as it crosses into Idaho and Lemhi Counties in Idaho and west-
central and southwest Montana. Snow squalls will produce brief
periods of whiteout conditions due to the combination of heavy
snow and wind gusts up to 45 mph. Strong cold air advection will
occur behind the front, increasing the threat for roadways to
freeze quickly, particularly after 5 pm with the loss of solar
heating. The evening commute could be particularly treacherous
across the I-90, US-93, and Highway 200 corridors south and east
of Missoula.
Friday night into Christmas Day, widespread snow shower activity
is expected as another pacific trough moves into the region. Snow
will focus along the ID/MT border, including the Kootenai/Cabinet
region, and across the West Glacier region, where 4” or more of
snowfall is likely. Model guidance continues to struggle with the
timing and progression of the arctic front moving into northwest
Montana. For example the GFS and GEFS bring the arctic front
across the divide into the Flathead Valley Christmas Day. The GEFS
ensemble mean crashes 850T temperatures down to -18C by Christmas
morning. The EPS on the other hand, stalls the arctic boundary
for another 24-36 hours, with 850T temperatures only reaching -6C
by Christmas morning! The current forecast leans on the NBM, which
keeps the arctic boundary stalled along the divide through
Christmas.
On Sunday, a upper level trough will deepen across southern
portions of British Columbia and Washington. A broad surface low
will develop across eastern Washington and will slowly track into
central Idaho. Arctic air will be pulled across the divide,
leading to periods of snow, blowing and drifting of snow, and much
colder temperatures. This system will be monitored closely in the
coming days as the track and strength of the surface low will
have a big impact on the severity of this winter storm.
Model ensemble guidance remains in good agreement with a very
cold arctic air-mass settling across the region through at least
Wednesday next week. Confidence is high for the coldest
temperatures of the winter thus far. High temperatures will be in
the single digits to single digits below 0 across western Montana.
The potential exists for low temperatures to drop well below 0,
especially along the divide and in northwest Montana. Now is the
time to prepare for this period of cold. Make sure your vehicles
will be able to withstand cold soaking below zero (i.e. coolant
rated to 40 below zero Fahrenheit). Make sure you have an
appropriate amount of fuel for heating your home. Please visit
weather.gov/safety/cold for more suggestions on how you can
prepare for this arctic blast. /Lukinbeal
&&
.AVIATION...Scattered shower activity will continue across the
Northern Rockies this morning as a warm front moves through the
area. A wintry mix of freezing rain and snow will continue to
impact areas along and north of the I-90 corridor through
23/1800z. A strong pacific cold front will track across the
Northern Rockies from 23/2000z to 24/0600z. Snow squalls will
likely develop along the leading edge of the front as it tracks
across Idaho and Lemhi Counties in Idaho and across west-central
and southwest Montana. Brief periods of heavy snow and wind gusts
to 40 knots are possible at KMSO, KBTM, and KSMN. /Lukinbeal
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory until 11 AM MST this morning Lower Clark
Fork Region.
Winter Weather Advisory until 11 AM MST this morning
Flathead/Mission Valleys.
Winter Weather Advisory until 11 AM MST this morning West
Glacier Region.
Winter Weather Advisory until 11 AM MST this morning
Kootenai/Cabinet Region.
Winter Weather Advisory until 11 AM MST this morning
Bitterroot/Sapphire Mountains.
Winter Weather Advisory until 11 AM MST this morning
Potomac/Seeley Lake Region.
ID...Winter Weather Advisory until 10 AM PST this morning Northern
Clearwater Mountains.
Winter Weather Advisory until 10 AM PST this morning Southern
Clearwater Mountains.
&&In the hours before
Local storm report, Dec 23, 6:16 AM PST, 4 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
716 AM MST THU DEC 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM FREEZING RAIN 6 NW MISSOULA 46.92N 114.09W
12/23/2021 M0.05 INCH MISSOULA MT OFFICIAL NWS OBS
SIDEWALKS AND SIDE STREETS ARE VERY SLICK.
&&Local storm report, Dec 23, 6:31 AM PST, 4 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
731 AM MST THU DEC 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 AM HEAVY SNOW 5 ENE BLACKTAIL - RAILR 48.31N 113.36W
12/23/2021 M3.4 INCH FLATHEAD MT MESONET
MARIAS PASS SENSOR REPORTED IN 3 HOURS.
SOUTHWEST WINDS GUSTING TO 24 MPH. MDT
HOISTED SEVERE DRIVING CONDITIONS.
&&Special weather statement, Dec 23, 7:01 AM PST, 3 hours 52 minutes before
Special Weather Statement
National Weather Service Missoula MT
801 AM MST Thu Dec 23 2021
MTZ006-007-231545-
Bitterroot/Sapphire Mountains MT-Butte/Blackfoot Region MT-
801 AM MST Thu Dec 23 2021
...Intense snow showers will impact portions of central Granite and
south central Powell Counties through 845 AM MST...
At 801 AM MST, Doppler radar was tracking intense snow showers along
a line extending from 17 miles east of Bonner-West Riverside to 22
miles southwest of West Valley. Movement was east at 25 mph.
HAZARD...Visibility one-quarter mile or less.
SOURCE...Radar indicated.
IMPACT...Low visibility could result in dangerous driving
conditions.
Locations impacted include...
Interstate 90 near Garrison, Highway 1 in Maxville, Hall, Princeton,
Brock Creek and Goldcreek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4662 11272 4644 11268 4638 11365 4655 11369
TIME...MOT...LOC 1501Z 262DEG 24KT 4689 11351 4601 11344
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPHSpecial weather statement, Dec 23, 7:46 AM PST, 3 hours 7 minutes before
Special Weather Statement
National Weather Service Missoula MT
846 AM MST Thu Dec 23 2021
MTZ007-231630-
Butte/Blackfoot Region MT-
846 AM MST Thu Dec 23 2021
...Intense snow showers will impact portions of southeastern Powell
County through 930 AM MST...
At 844 AM MST, the MacDonald Pass webcam and Doppler radar showed
heavy snow along a line extending from 18 miles southeast of Lincoln
to 9 miles northwest of Basin. Movement was east at 25 mph.
HAZARD...Visibility one-quarter mile or less.
SOURCE...Public.
IMPACT...Low visibility could result in dangerous driving
conditions.
Locations impacted include...
US 12 from Avon to MacDonald Pass.
LAT...LON 4648 11231 4645 11268 4663 11272 4667 11241
4666 11240 4666 11232 4665 11231 4658 11231
4657 11232 4656 11230 4649 11230
TIME...MOT...LOC 1544Z 265DEG 20KT 4677 11241 4637 11240
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPHLocal storm report, Dec 23, 8:13 AM PST, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
913 AM MST THU DEC 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 AM FREEZING RAIN 4 SW HARPSTER 45.94N 116.01W
12/23/2021 U0.01 INCH IDAHO ID DEPT OF HIGHWAYS
&&Local storm report, Dec 23, 8:27 AM PST, 2 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
927 AM MST THU DEC 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 AM FREEZING RAIN 2 WNW BELKNAP 47.67N 115.44W
12/23/2021 E0.01 INCH SANDERS MT TRAINED SPOTTER
&&The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 23, 7:01 AM PST | Special Weather Statement | MSO | Granite | 44 min |
| Dec 23, 7:46 AM PST | Special Weather Statement | MSO | Powell | 44 min |
| Dec 23, 2:29 PM PST | Special Weather Statement | MSO | Missoula | 61 min |
| Dec 23, 2:57 PM PST | Special Weather Statement | MSO | Ravalli | 63 min |
| Dec 23, 3:12 PM PST | Special Weather Statement | MSO | Powell | 93 min |
| Dec 23, 3:52 PM PST | Special Weather Statement | MSO | Deer Lodge, Silver Bow | 83 min |
Nearby
Winter Weather Advisories in Montana, 2021Winter Weather Advisories in Idaho, 2021Every winter weather 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.