Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 459 AM EDT Fri Apr 03 2015 Valid 12Z Fri Apr 03 2015 - 12Z Sun Apr 05 2015 ...Heavy rains and strong to severe thunderstorms will be possible across the Ohio and Tennessee Valleys on Friday... ...Accumulating snowfall expected in northern New England by the weekend... A persistent supply of moisture streaming northward out of the Gulf of Mexico will set the stage for active weather over the Eastern half of the Nation late this week. Heavy rains and strong to severe thunderstorms will continue to focus along a frontal boundary stretched through the Ohio Valley early Friday...and as deepening surface low along the boundary tracks eastward...it will bring additional rounds of heavy rains and threats for flash flooding to portions of the Ohio Valley. The tail end of the cold front clearing the Eastern Seaboard will stall out over the western Gulf. The lingering frontal boundary should bring some scattered showers and thunderstorms into Texas this weekend. Out West...a weakening frontal boundary approaching the coast will bring rain and higher elevation snow from the Pacific Northwest to the northern Rockies late Friday into Saturday. Gerhardt Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php