270 WWUS45 KTFX 171632 WSWTFX URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 932 AM MST Sat Feb 17 2018 MTZ014-180400- /O.CON.KTFX.WS.W.0005.180217T1800Z-180219T1200Z/ /O.CON.KTFX.WW.Y.0076.180217T1800Z-180219T1200Z/ Central and Southern Lewis and Clark- Including the following locations Helena, Lincoln, MacDonald Pass, and Rogers Pass 932 AM MST Sat Feb 17 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY FOR THE HELENA VALLEY... * WHAT...Heavy snow and blowing snow expected to develop this afternoon and continue through tonight. Periods of snow in the Helena valley. Total snow accumulations of 8 to 12 inches expected with localized amounts up to 20 inches in the mountains. In the Helena valley, total snow accumulations of 3 to 7 inches are expected. * WHERE...Central and Southern Lewis and Clark. * WHEN...For the Winter Storm Warning, until 5 AM MST Monday. For the Winter Weather Advisory, until 5 AM MST Monday. * ADDITIONAL DETAILS...Travel will be very difficult to impossible. Winds gusting as high as 30 mph will cause areas of blowing and drifting snow. The cold wind chills as low as 30 below zero Sunday could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing 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. A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for 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. && $$ MTZ009>013-044>051-054-180400- /O.CON.KTFX.WS.W.0005.180217T1800Z-180219T1200Z/ Northern Rocky Mountain Front-Eastern Glacier-Hill-Cascade- Chouteau-Toole-Liberty-Eastern Pondera-Blaine- Southern Rocky Mountain Front-Eastern Teton-Judith Basin-Fergus- Meagher- Including the following locations Logan Pass, Marias Pass, Browning, Heart Butte, Cut Bank, Havre, Rocky Boy, Rudyard, Great Falls, Cascade, Belt, Kings Hill Pass, Fort Benton, Carter, Big Sandy, Shelby, Sunburst, Chester, Whitlash, Brady, Conrad, Chinook, Harlem, Hays, Bynum, Choteau, Augusta, Fairfield, Dutton, Raynesford, Stanford, Hobson, Lewistown, Winifred, Lewistown Divide, Grass Range, Martinsdale, and White Sulphur Springs 932 AM MST Sat Feb 17 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... * WHAT...Heavy snow and blowing snow occurring along the Continental divide expected to expand east across north central Montana this afternoon and evening. Total snow accumulations of 6 to 9 inches, with 9 to 14 inches west of Intestate 15 to the Rocky Mountain Front. Localized amounts up to 2 feet across the mountains of the Rocky Mountain Front. * WHERE...Portions of central and north central Montana. * WHEN...Until 5 AM MST Monday. * ADDITIONAL DETAILS...Plan on difficult travel conditions. Winds gusting as high as 30 mph already causing areas of blowing and drifting snow near the continental divide will expand east across the plains tonight. The dangerously cold wind chills as low as 35 below zero on Sunday could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ008-015-052-053-055-180400- /O.CON.KTFX.WW.Y.0076.180217T1800Z-180219T1200Z/ Beaverhead-Madison-Jefferson-Broadwater-Gallatin- Including the following locations Big Hole Pass, Wisdom, Dillon, Chief Joseph Pass, Monida Pass, Wise River, Ennis, Norris Hill, Raynolds Pass, Twin Bridges, Virginia City, Montana City, Boulder, Boulder Hill, Elk Park Pass, Homestake Pass, Whitehall, Toston, Townsend, Bozeman, West Yellowstone, Battle Ridge Pass, Bozeman Pass, and Targhee Pass 932 AM MST Sat Feb 17 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... * WHAT...Periods of snow and blowing snow expected. Total snow accumulations of 3 to 7 inches. Localized snow amounts 15 inches in the mountains. * WHERE...Beaverhead, Madison, Jefferson, Broadwater and Gallatin. * WHEN...Until 5 AM MST Monday. * ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree branches could fall. Winds gusting as high as 45 mph will cause areas of blowing and drifting snow. The cold wind chills as low as 20 below zero Sunday could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for 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. && $$ http://www.weather.gov/greatfalls