Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 458 AM EDT Mon Apr 07 2014 Valid 12Z Mon Apr 07 2014 - 12Z Wed Apr 09 2014 ...The widespread threat for flash flooding and severe weather will continue from the Central Gulf Coast to the Southeast... An expansive area of rain and thunderstorms developing to north of a frontal boundary stretched across the Southeast and Northern Gulf Coast will continue to spread northward through the Eastern U.S. on Monday as a strengthening surface low along the boundary lifts through the Tennessee and Ohio Valleys. Strong southerly flow transporting anomalous moisture out of the Gulf will fuel widespread moderate to heavy rains. Flash flooding and severe weather will be a threat within storms developing ahead of a trailing cold front slowly pushing eastward from the Lower Mississippi Valley to the Southeast and southern Mid-Atlantic states. On Tuesday...the deepening surface low and associated precipitation will continue to lift northeastward while the low tracks through the Lower Great Lakes and southern Quebec. Snow will be a possibility over some of the highest elevations of the Northeast...but the threat for flash flooding and severe weather will diminish as the trailing cold front pushes off the Atlantic coast. Scattered shower activity is expected beneath energy diving through the Plains on Monday and crossing the Mississippi Valley on Tuesday. Although showers could be widespread...a limited moisture supply should keep precipitation totals on the lighter side. Above normal temperatures and dry conditions are expected across the Western U.S. the next few days as an upper ridge slides in aloft. However...a Pacific cold front approaching the coast should bring precipitation back into the extreme northwestern corner of the Nation on Tuesday. Gerhardt Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php