Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 328 PM EDT Fri Mar 22 2019 Valid 00Z Sat Mar 23 2019 - 00Z Mon Mar 25 2019 ...A coastal storm will continue to bring rain, snow, and gusty winds to parts Northeast through Saturday morning... ...Showers and thunderstorms are expected to spread eastward across the Plains this evening into Saturday, and then toward the Mississippi Valley where major to historic river flooding continues... ...A couple rounds of rain and mountain snow likely across the western U.S. through the weekend... A coastal low pressure system that has brought soaking rains to the Mid-Atlantic region will continue to track northeastward off the coast of Maine this evening. Light to moderate rain is expected across the coastal sections, changing to snow showers by Saturday morning. Temperatures will be cold enough to support accumulating snow well inland across much of the interior Northeast, where winter storm warnings have been issued. The storm center will begin to move into the Canadian maritimes on Saturday as the snow gradually tapers off during the day from west to east across New England. However, the size of the storm will maintain gusty northwesterly winds across much of the Northeast into Saturday night. Meanwhile, a system located across the central U.S. is forecast to move eastward into the Plains this evening and into Saturday. As it does so, there is a slight chance for thunderstorms to turn severe across West Texas and the Oklahoma Panhandle early this evening. Widespread showers and thunderstorms can also be expected on Saturday across the Central and Southern Plains. By Sunday morning, the rain is expected to spread into the Lower to Mid-Mississippi Valley, where major to historic river flooding has been ongoing. At the same time, an arctic front is forecast to reach the U.S.-Canadian border by Sunday morning. The western U.S. will stay active as a Pacific system moves onshore later today and brings scattered areas of mountain snow and lower-elevation rain through Sunday morning. Another system will be on its heels and enter on Sunday night with more rain and mountain snow. Snell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php