Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 AM EST Sun Mar 04 2018 Valid 12Z Sun Mar 04 2018 - 12Z Tue Mar 06 2018 ...Heavy snow expected for the Great Basin, northern Rockies and northern Plains over the next couple of days... ...Widespread showers and embedded thunderstorms developing over the Mississippi Valley and spreading eastward through the Ohio and Tennessee Valleys Monday... ...Much calmer weather likely over the Northeast and Mid-Atlantic region the powerful Atlantic storm continues to pull away from the East coast... The upper-level trough and surface cold front moving east through the Great Basin and Rockies this weekend will move out into the central U.S. early in the week. Scattered to widespread snow over the Great Basin and Rockies will continue through at least Sunday night before slowly tapering off as the front exits into the Plains. The heaviest amounts, upwards of a foot or more, will tend to focus in the higher elevations along a frontal boundary setting up across western Wyoming and central Utah, with upslope flow helping to support snows of 6-12 inches farther northward through central Montana. The central low pressure with this frontal system will intensify over the Plains on Monday and will pick up speed. Heavy snow will spread across the Northern High Plains to the Upper Mississippi Valley. Farther south...strengthening westerly flow out ahead of this vigorous system and its associated cold front, along with very low relative humidities, will bring a threat for dangerous fire weather conditions to parts of the central and southern High Plains on Sunday. Conditions will improve somewhat as winds diminish with the passage of the front on Monday. At the same time, warm moist air will transport northward from the Gulf up the Mississippi Valley. This influx of moisture will aid in the development of widespread showers and thunderstorms once the front approaches the region. Much of the East will have conditions returning to calm and dry. A few locations will continue to be breezy. A weak cold front dropping out of eastern Canada may bring a little snow to parts of the Northeast on Sunday, but amounts should be light. Campbell/Klein Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php