Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 455 AM EDT Wed May 08 2013 Valid 12Z Wed May 08 2013 - 12Z Fri May 10 2013 ...Accumulating snows possible over the Colorado Rockies... ...An increase in convection is expected across the Nation's mid-section... ...Damp and dreary conditions are in the forecast for the Northeast... Widespread showers and thunderstorms will continue across the Western U.S. through the middle of the work week as a closed low aloft slowly inches through the Four Corners region. Limited moisture across the area should keep precipitation totals to a minimum. However...strong easterly/northeasterly flow against the Colorado Rockies should force some heavier upslope precipitation across the front range...and temperatures should be low enough to support accumulating snows in the higher elevations. An increase in convection is expected across the Nation's mid-section the next few days as a the closed low in the Western U.S. edged eastward a low level southerly flow draws Gulf moisture northward. Showers and thunderstorms will be focused along a frontal boundary gradually pushing eastward through the Midwest and Central to Southern Plains. Wet and soggy conditions will continue to accompany a cut-off low creeping up the Eastern Seaboard the next few days. A plume of Atlantic moisture getting wrapped inland ahead of an occluded cold front will fuel moderate to heavy rains along and ahead of the boundary while it lifts northward through the Mid-Atlantic states on Wednesday and into the Northeast Thursday. Behind the occluded front, some periods of sun will be possible during the day tomorrow with drier air working in aloft, leading to more unstable conditions. This could allow for some scattered thunderstorms to develop tomorrow afternoon across portions of the Mid-Atlantic. The closed low aloft will weaken with time and precipitation should decrease in intensity. Gerhardt Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php