Alert archive / Montana / Winter Storm Warnings in 2018
Winter Storm Warning 15, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Dec 10, 2018, 2:42 PM MST for 7 counties in Montana; Clearwater County, Idaho County, Idaho. It took effect at Dec 11, 2018, 2:00 PM MST. It was in force for 19 hr. 16 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 10, 2018, 2:42 PM MST (21:42 UTC)
- In effect from
- Dec 11, 2018, 2:00 PM MST
- Expired
- Dec 12, 2018, 8:52 AM MST
- In force
- 19 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Flathead County, MT, Granite County, MT, Lake County, MT, Mineral County, MT, Missoula County, MT, Ravalli County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 43 km from the middle of the area, began a volume at 21:45 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 12, 2:00 AM MST | SNOW 4 | 9 Wsw Marion, MT | SINCE NOON TUESDAY. |
| Dec 12, 4:00 AM MST | SNOW 12 | 5 Ne Elk River, ID | MESONET STATION ELBI1 ELK BUTTE SNOTEL, 4 NE ELK RIVER. |
| Dec 12, 5:00 AM MST | HEAVY SNOW 33 | 5 Nw East Portal, MT | LOOKOUT PASS SKI RESORT IN THE LAST 24 HOURS. 23.0 INCHES FELL SINCE LAST EVENING. |
| Dec 12, 6:00 AM MST | FREEZING RAIN 0 | 1 Sw Greenough, MT | ENOUGH TO DEVELOP GLAZE BETWEEN BONNER AND GREENOUGH HILL. |
| Dec 12, 6:00 AM MST | FREEZING RAIN 0 | Superior, MT | ACCUMULATED ENOUGH ON SURFACES TO CREATE A GLAZE. |
| Dec 12, 6:00 AM MST | SNOW 3 | 5 N Whitefish, MT | WHITEFISH MOUNTAIN SKI RESORT. THEY ALSO REPORTED 7 INCHES AT THE SUMMIT (6,817 FEET) OVERNIGHT. |
| Dec 12, 6:00 AM MST | SNOW 7 | 8 E Pierce, ID | MESONET STATION HEMI1 SNOTEL, 7 E PIERCE. PRECIPITATION STOPPED AFTER 4 AM PST. SNOW FELL FROM 12 PM TO 4 AM PST. |
| Dec 12, 6:00 AM MST | HEAVY SNOW 14 | 16 W Charlos Heights, MT | MESONET STATION TWLM8 TWIN LAKES SNOTEL, 15 MILES WEST OF CHARLOS HEIGHTS. SINCE 5 PM DEC. 11. |
| Dec 12, 6:00 AM MST | SNOW 14 | 26 Ene Headquarters, ID | COOL CREEK SNOTEL AT 6,280 FT. TOTAL PRECIPITATION WAS 1.60 INCHES. |
| Dec 12, 6:00 AM MST | HEAVY SNOW 14 | 7 Ssw Lolo Hot Springs, MT | LOLO PASS. |
| Dec 12, 7:00 AM MST | SNOW 2.5 | 3 Sw Greenough, MT | |
| Dec 12, 7:55 AM MST | HEAVY SNOW 12 | Elk River, ID | ELEVATION AROUND 2800 FT. |
| Dec 12, 7:58 AM MST | SNOW 3.5 | Essex, MT | IZAAK WALTON INN. |
| Dec 12, 8:00 AM MST | SNOW 3 | 3 Se Essex, MT | 24 HOUR TOTAL. |
| Dec 12, 8:30 AM MST | SNOW 4 | 10 Sse Orogrande, ID | CO-OP OBSERVER STATION DXEI1, DIXIE NORTH. |
| Dec 12, 8:46 AM MST | SNOW 7 | 5 N Whitefish, MT | REPORT CAME FROM SOCIAL MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 9.7 hours before the alert went out and 161 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
- 496 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
478 WWUS45 KMSO 102142 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 242 PM MST Mon Dec 10 2018 IDZ006-112145- /O.UPG.KMSO.WS.A.0007.181212T0000Z-181212T1800Z/ /O.NEW.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Southern Clearwater Mountains- 142 PM PST Mon Dec 10 2018 ...WINTER STORM WARNING IN EFFECT FROM 1 PM TUESDAY TO 10 AM PST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 14 inches expected from Lolo Pass to Powell. 5 to 8 inches in Elk City and Dixie. Winds gusting as high as 25 mph could create isolated areas of blowing snow. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 1 PM Tuesday to 10 AM PST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IDZ005-112145- /O.UPG.KMSO.WS.A.0007.181211T1800Z-181212T1800Z/ /O.NEW.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Northern Clearwater Mountains- 142 PM PST Mon Dec 10 2018 ...WINTER STORM WARNING IN EFFECT FROM 1 PM TUESDAY TO 10 AM PST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 14 inches expected in Elk River and Headquarters. 6 to 8 inches over the eastern Grangemont Road and Pierce areas. * WHERE...Elk River, Highway 11 Pierce to Headquarters, and Pierce. * WHEN...From 1 PM Tuesday to 10 AM PST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-112145- /O.UPG.KMSO.WS.A.0007.181211T1800Z-181212T1800Z/ /O.NEW.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Lower Clark Fork Region- 242 PM MST Mon Dec 10 2018 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow and blowing snow expected. Total snow accumulations of 8 to 14 inches expected. 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...From 2 PM Tuesday to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ002-112145- /O.UPG.KMSO.WS.A.0007.181212T0000Z-181212T1800Z/ /O.NEW.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ West Glacier Region- 242 PM MST Mon Dec 10 2018 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow and blowing snow expected. Total snow accumulations of 6 to 9 inches expected. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 2 PM Tuesday to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-112145- /O.UPG.KMSO.WS.A.0007.181212T0000Z-181212T1800Z/ /O.NEW.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 242 PM MST Mon Dec 10 2018 ...WINTER STORM WARNING IN EFFECT FROM 2 PM TUESDAY TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow and blowing snow expected. Total snow accumulations of 8 to 14 inches expected. Winds gusting as high as 35 mph. * WHERE...Lolo Pass, Highway 93 Sula to Lost Trail Pass. * WHEN...From 2 PM Tuesday to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ001-112145- /O.UPG.KMSO.WS.A.0007.181211T1800Z-181212T1800Z/ /O.NEW.KMSO.WW.Y.0068.181211T2100Z-181212T1600Z/ Kootenai/Cabinet Region- 242 PM MST Mon Dec 10 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM TUESDAY TO 9 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 7 inches expected. Winds gusting as high as 35 mph. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 2 PM Tuesday to 9 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-112145- /O.NEW.KMSO.WW.Y.0068.181211T2100Z-181212T1200Z/ Orofino/Grangeville Region- 142 PM PST Mon Dec 10 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM TUESDAY TO 4 AM PST WEDNESDAY... * WHAT...Snow expected. Slight chance of light freezing rain or mixture with sleet between Kooskia and Lowell on Highway 12. Total snow accumulations of 2 to 4 inches expected, less than an inch below 2000 feet. Strong south winds gusting to 50 mph combined with slick conditions could become hazardous leading up to Whitebird Hill from Grangeville for high profile vehicles. * WHERE...Highway 95 south of Grangeville to Whitebird Hill. Upper benches in the vicinity of Orofino including Teakean and Cavendish. Greer Grade to Weippe. * WHEN...From 1 PM Tuesday to 4 AM PST Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
5 follow-up statements
987 WWUS45 KMSO 111039 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 339 AM MST Tue Dec 11 2018 IDZ005-006-121045- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 239 AM PST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 AM PST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 15 inches expected from Lolo Pass to Powell. 5 to 8 inches at other locations. Winds gusting as high as 35 mph could create isolated areas of blowing snow. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 1 PM this afternoon to 10 AM PST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-121045- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Lower Clark Fork Region- 339 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 13 inches expected. 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...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ002-121045- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ West Glacier Region- 339 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 10 inches expected. Winds gusting as high as 40 mph especially over Marias Pass. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-121045- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 339 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches expected. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IDZ009-010-121045- /O.EXB.KMSO.WW.Y.0068.181212T0300Z-181212T1800Z/ Western Lemhi County-Eastern Lemhi County- 339 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches expected. Winds gusting as high as 35 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From 8 PM this evening to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-121045- /O.EXB.KMSO.WW.Y.0068.181212T0000Z-181212T1800Z/ Potomac/Seeley Lake Region- 339 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. Winds gusting as high as 40 mph. * WHERE...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 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-121045- /O.CON.KMSO.WW.Y.0068.181211T2100Z-181212T1200Z/ Orofino/Grangeville Region- 239 AM PST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 AM PST WEDNESDAY... * WHAT...Snow expected. Slight chance of light freezing rain or mixture with sleet in the lower valleys. Total snow accumulations of 2 to 4 inches expected, less than an inch below 2000 feet. Strong winds gusting to 50 mph between Whitebird Hill to Grangeville are expected. * WHERE...Highway 95 south of Grangeville to Whitebird Hill. Upper benches in the vicinity of Orofino. Greer Grade to Weippe. * WHEN...From 1 PM this afternoon to 4 AM PST Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-121045- /O.CON.KMSO.WW.Y.0068.181211T2100Z-181212T1600Z/ Kootenai/Cabinet Region- 339 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 6 to 12 inches expected. 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...From 2 PM this afternoon to 9 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
621 WWUS45 KMSO 111838 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1138 AM MST Tue Dec 11 2018 IDZ005-006-121800- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1038 AM PST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 15 inches expected from Lolo Pass to Powell. 5 to 8 inches at other locations. Winds gusting as high as 35 mph could create isolated areas of blowing snow. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 1 PM this afternoon to 10 AM PST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-121800- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Lower Clark Fork Region- 1138 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 13 inches expected. 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...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ002-121800- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ West Glacier Region- 1138 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 10 inches expected. Winds gusting as high as 40 mph especially over Marias Pass. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-121800- /O.CON.KMSO.WS.W.0015.181211T2100Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 1138 AM MST Tue Dec 11 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches expected. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...From 2 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ003-121800- /O.EXA.KMSO.WW.Y.0068.181212T0300Z-181212T1800Z/ Flathead/Mission Valleys- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches expected. Winds gusting as high as 30 mph. * WHERE...Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From 8 PM this evening to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-121800- /O.EXA.KMSO.WW.Y.0068.181212T0300Z-181212T1800Z/ Missoula/Bitterroot Valleys- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 4 inches expected. Winds gusting as high as 40 mph. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 8 PM this evening to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-121800- /O.EXA.KMSO.WW.Y.0068.181212T0300Z-181212T1800Z/ Butte/Blackfoot Region- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 2 inches expected. Local higher snow accumulations of 3 to 5 inches in the vicinity of Georgetown Lake. Winds gusting as high as 40 mph after 9 am Wednesday, especially along the I-90 corridor from Garrison Junction to Anaconda. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...From 8 PM this evening to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-121800- /O.CON.KMSO.WW.Y.0068.181212T0300Z-181212T1800Z/ Western Lemhi County-Eastern Lemhi County- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches expected. Winds gusting as high as 35 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From 8 PM this evening to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-121800- /O.CON.KMSO.WW.Y.0068.181212T0000Z-181212T1800Z/ Potomac/Seeley Lake Region- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. Winds gusting as high as 40 mph. * WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From 5 PM this afternoon to 11 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-121200- /O.CON.KMSO.WW.Y.0068.181211T2100Z-181212T1200Z/ Orofino/Grangeville Region- 1038 AM PST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST WEDNESDAY... * WHAT...Snow expected. Slight chance of light freezing rain or mixture with sleet in the lower valleys. Total snow accumulations of 2 to 4 inches expected, less than an inch below 2000 feet. Strong winds gusting to 55 mph between Whitebird Hill to Grangeville are expected. * WHERE...Highway 95 south of Grangeville to Whitebird Hill. Upper benches in the vicinity of Orofino. Greer Grade to Weippe. * WHEN...From 1 PM this afternoon to 4 AM PST Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-121600- /O.CON.KMSO.WW.Y.0068.181211T2100Z-181212T1600Z/ Kootenai/Cabinet Region- 1138 AM MST Tue Dec 11 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations of 6 to 12 inches expected. Winds gusting as high as 35 mph. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...From 2 PM this afternoon to 9 AM MST Wednesday. * ADDITIONAL DETAILS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
635 WWUS45 KMSO 121058 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 358 AM MST Wed Dec 12 2018 MTZ003-005-121200- /O.CAN.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 358 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Showers will continue this morning, but snow accumulations will be minimal. $$ IDZ005-006-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 258 AM PST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Lower Clark Fork Region- 358 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inches. 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 this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ West Glacier Region- 358 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 358 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Western Lemhi County-Eastern Lemhi County- 358 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Potomac/Seeley Lake Region- 358 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional 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 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ007-121200- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1200Z/ Orofino/Grangeville Region- 258 AM PST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Benches around Orofino and Greer Grade. * WHEN...Until 4 AM PST early this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-121600- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1600Z/ Kootenai/Cabinet Region- 358 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. 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 9 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Butte/Blackfoot Region- 358 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY ABOVE 6000 FEET REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Georgetown Lake and MacDonald Pass. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
024 WWUS45 KMSO 121343 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 643 AM MST Wed Dec 12 2018 IDZ005-006-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 543 AM PST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ004-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Lower Clark Fork Region- 643 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of up to two inches. Winds gusting as high as 35 mph. * WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ West Glacier Region- 643 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of up to two 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 this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ MTZ006-121800- /O.CON.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 643 AM MST Wed Dec 12 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-121700- /O.EXB.KMSO.WW.Y.0068.000000T0000Z-181212T1700Z/ Missoula/Bitterroot Valleys- 643 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM MST THIS MORNING... * WHAT...Icy roads. * WHERE...Missoula/Bitterroot Valleys. * WHEN...Until 10 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... && $$ IDZ009-010-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Western Lemhi County-Eastern Lemhi County- 643 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 35 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Potomac/Seeley Lake Region- 643 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to two 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 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-121600- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1600Z/ Kootenai/Cabinet Region- 643 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to Whitefish. * WHEN...Until 9 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Butte/Blackfoot Region- 643 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Butte/Blackfoot Region. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
651 WWUS45 KMSO 121552 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 852 AM MST Wed Dec 12 2018 IDZ005-006-121800- /O.CAN.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ /O.EXA.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 752 AM PST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 35 mph. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...Until 10 AM PST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-121800- /O.CAN.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ /O.EXA.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Lower Clark Fork Region- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow. Additional snow accumulations of up to one inch. 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 this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-121800- /O.CAN.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ /O.EXA.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ West Glacier Region- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, and Polebridge. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-121800- /O.CAN.KMSO.WS.W.0015.000000T0000Z-181212T1800Z/ /O.EXA.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Bitterroot/Sapphire Mountains- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Bitterroot/Sapphire Mountains. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ001-121700- /O.EXP.KMSO.WW.Y.0068.000000T0000Z-181212T1600Z/ Kootenai/Cabinet Region- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM MST THIS MORNING... $$ MTZ005-121700- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1700Z/ Missoula/Bitterroot Valleys- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST THIS MORNING... * WHAT...Icy roadways and periods of gusty winds. * WHERE...Missoula/Bitterroot Valleys. * WHEN...Until 10 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Western Lemhi County-Eastern Lemhi County- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 35 mph. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Potomac/Seeley Lake Region- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. 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 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-121800- /O.CON.KMSO.WW.Y.0068.000000T0000Z-181212T1800Z/ Butte/Blackfoot Region- 852 AM MST Wed Dec 12 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Butte, Georgetown Lake, Highway 12 Garrison to Elliston, Homestake Pass, and MacDonald Pass. * WHEN...Until 11 AM MST this morning. * ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
What forecasters said that day
The local office's own words before this winter storm warning 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 storm warning went out at Dec 10, 7:38 AM MST, 7 hours 4 minutes earlier.
Area forecast discussion, Dec 10, 7:38 AM MST, 7 hours 4 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
738 AM MST Mon Dec 10 2018
.UPDATE...Issuing a winter weather advisory across Northwest
Montana. An area of snow will continue through mid morning and
produce an inch or two of snow that will cause slippery travel
during the morning commute.
&&
.AVIATION...A cold front will steadily move across the Northern
Rockies today causing ceilings to lower. This front will also
bring widespread light snow which will causing periodic visibility
issues at area terminals, mainly at KGPI through 10/1800z. The
precipitation decreases in intensity and coverage throughout the
night.
&&
.PREV DISCUSSION... /ISSUED 352 AM MST Mon Dec 10 2018/
DISCUSSION...The first cold front is currently knocking at the
door of the Northern Rockies this morning. This front will steadily
move through the region bringing widespread light snow to the
area. The mountain passes along the Montana/Idaho border will have
the biggest impact from this disturbance with Lookout, Lolo and
Marias passes potentially receiving up to 3 inches of new snow
over the next 12 to 18 hours. Valleys inversions will diminish as
the front passes allowing temperatures to potentially spike to
the warmest readings over the past several days. After the passage
of the front the upper level flow becoming northwesterly which
will keep scattered showers lingering across the region. However
some snow could last into the evening hours over the Camas
Prairie in Idaho which may bring an area of concern, particularly
along US-95 from Whitebird Grade to Cottonwood where the
potential for 1 to 3 inches of snow exists by midnight tonight.
A transitory ridge will give the region a respite from
precipitation on Tuesday before the next round of moisture moves
into the area. An even stronger cold front will bring significant
impacts to the Northern Rockies late Tuesday into Wednesday.
But first we see a southerly pressure gradient setting up ahead
of the front up over Hells Canyon to Camas Prairie. Wind gusts of
30 to 40 mph will be possible by Tuesday evening for Riggins up to
Grangeville. The aforementioned front will have substantially
more moisture to work with as it moves the region and thus the
higher terrain along the Montana/Idaho border could receive
upwards of a foot of new snow by Wednesday morning. However strong
westerly winds along and behind the front will have downsloping
effects on the valleys. Most valley locations should receive 1 to
3 inches of new snow with higher amounts possible in the narrower
valleys of northwest Montana and north central Idaho where
downsloping affects will be less felt. The combination of heavy
snow with strong westerly winds has led to the issuance of several
Winter Storm Watches for the higher terrain. Southwest Montana
down into Lemhi County will be impacted by the strongest winds by
Wednesday afternoon, where wind gusts will have the potential of
reaching 40 mph. The snow and winds will steady diminish
throughout Wednesday night.
Much of the Northern Rockies will reside between weather systems
on Thursday and Friday with the main upper level jet near or north
of the Canadian border. Some precipitation may continue across far
NW Montana, mainly to areas north of US-2 with the Purcell and
Whitefish Mountains bearing the brunt of this limited moisture.
Elsewhere breezy winds appear possible which subsequently could
push temperatures to the warmest readings this month in many
places on Friday. Meanwhile in the higher terrain it will be
downright windy, especially along the Continental Divide. We could
even see some more strong winds developing throughout Grangeville
and the Camas Prairie/Hells Canyon area.
Models are struggling to pin down both the path and strength of
the next weather system, advertised to be through Idaho and
Montana sometime Saturday. This wave seems to have a weakening
trend in the models over the past 24 hours and could ultimately
be delayed or at best, significantly weaker as it tries to pass
through a weak upper level ridge. If the weakening trend
continues, temperatures this weekend could end up quite a bit
warmer than forecast.
The pattern really starts to diverge as we look beyond the
weekend. The ECMWF transfers some jet energy south towards Baja of
California, Mexico and thus keeps the NW USA under a very wet,
albeit warm westerly flow for several days. However the GFS is
absent this southward energy transfer and ultimately keeps the
subtropical jet stream 100 to 200 miles farther south over Mexico.
And this would permit only brief moisture over the Northern
Rockies before it would shift north into Canada as ridging is then
forecast to build across the desert southwest.
AVIATION...A cold front will steadily move across the Northern
Rockies today causing ceilings to lower. This front will also
bring widespread light snow which will causing periodic visibility
issues at area terminals. The precipitation decreases in intensity
and coverage throughout the night.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Storm Watch from Tuesday morning through Wednesday
morning Kootenai/Cabinet Region...Lower Clark Fork Region.
Winter Weather Advisory until 10 AM MST this morning
Flathead/Mission Valleys...Kootenai/Cabinet Region...West
Glacier Region.
Winter Storm Watch from Tuesday afternoon through Wednesday
morning West Glacier Region.
Winter Storm Watch from Tuesday afternoon through Wednesday
morning Bitterroot/Sapphire Mountains.
ID...Winter Storm Watch from Tuesday morning through Wednesday
morning Northern Clearwater Mountains.
Winter Storm Watch from Tuesday afternoon through Wednesday
morning Southern Clearwater Mountains.
&&The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 3:20 AM MST | Winter Storm Watch | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more | 11 hr |
| Dec 10, 7:31 AM MST | Winter Weather Advisory | MSO | Flathead, Lake, Lincoln, Sanders | 2 hr |
| Dec 10, 2:42 PM MST | Winter Weather Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 50 hr |
Nearby
Winter Storm Warnings in Montana, 2018Winter Storm Warnings in Idaho, 2018Every winter storm warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.