* WHAT...Heavy snow expected. Total snow accumulations up to 10 inches at and below pass level, with up to two feet above pass level. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 6 PM Sunday to noon MDT Monday. * IMPACTS...The weight of snow on tree limbs may down power lines and could cause sporadic power outages. Tire chains may be required for some vehicles if traveling through mountain passes. * ADDITIONAL DETAILS...Snow levels will vary quite significantly across the area, resulting in significant north to south discrepancies in amounts across similar elevations. Areas most favored for the heaviest snow are across the Tobacco Roots and northern Madison and Gallatin ranges. The snow is forecast to be a heavy and wet variety, which will be difficult to shovel.

* WHAT...Heavy snow expected. Total snow accumulations of 1-3 feet with greatest totals on north and east facing aspects. Winds could gust as high as 50 mph. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Recreation in the high country could be impacted by heavy accumulating and blowing snow. Avalanche danger may increase.

* WHAT...Heavy snow possible. Total snow accumulations of 10-18 inches. Winds could gust as high as 45 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...From Monday morning through Monday evening. * IMPACTS...Travel may be hazardous on US-14. Recreation in the high country could be impacted by heavy accumulating snow.

Runoff from a combination of heavy rain and some mid elevation snow melt may cause minor flooding of streams and low lying areas near the foothills. * WHAT...Flooding caused by rain and snowmelt is possible. * WHERE...A portion of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Crazy Mountains, Livingston Area, Melville Foothills, Northern Carbon, Northern Park, Northern Stillwater, Northern Sweet Grass, Paradise Valley, Red Lodge Foothills and Southeastern Carbon. * WHEN...From Sunday afternoon through Monday afternoon. * IMPACTS...Excessive runoff may result in minor flooding of streams and other low-lying and flood-prone locations close to the foothills. Some roads may become impassable. Now is the time to move equipment and livestock to higher ground away from waterways. Recent burn scars may be more susceptible to produce flooding, including the Robertson Draw south of Red Lodge. * ADDITIONAL DETAILS... - Rain and high elevation snow is expected to develop Sunday afternoon and continue through Monday morning. Rainfall amounts are expected to range from 1 to 3 inches, while elevations above 7000 feet see heavy snow. There remains uncertainty regarding exact snow levels and how much snowmelt occurs with this system. Snow levels may fall enough to produce some wet snow at Red Lodge and Nye. - http://www.weather.gov/safety/flood

Runoff from a combination of heavy rain and some mid elevation snow melt may cause minor flooding of streams and low lying areas near the foothills. * WHAT...Flooding caused by rain and snowmelt is possible. * WHERE...Portions of south central Montana, including the following areas, Bighorn Canyon, Pryor/Northern Bighorn Mountains and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From Sunday evening through Monday evening. * IMPACTS...Excessive runoff may result in minor flooding of streams and other low-lying and flood-prone locations close to the foothills. Some roads may become impassable. Now is the time to move equipment and livestock to higher ground away from waterways. Recent burn scars may be more susceptible to produce flooding, including the Elk west of Dayton and Sheridan. * ADDITIONAL DETAILS... - Rain and high elevation snow is expected to develop Sunday night and continue into Monday afternoon. Rainfall amounts are expected to range from 1 to 2 inches, while elevations above 6000 feet see heavy snow. There remains uncertainty regarding exact snow levels and how much snowmelt occurs with this system. Snow levels may fall enough to produce some wet snow at Story and Aberdeen Hill. - http://www.weather.gov/safety/flood