Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 AM EST Fri Mar 07 2014 Valid 12Z Fri Mar 07 2014 - 12Z Sun Mar 09 2014 ...Coastal storm will continue to impact the southern to central Mid-Atlantic states on Friday... ...Another shot of arctic air expected behind a cold front dropping out of the north central U.S. on Friday... A surface low will continue to deepen while it steadily tracks up the Carolina coast on Friday. Plenty of Atlantic moisture getting wrapped into the storm will fuel widespread precipitation across the southern and central Mid-Atlantic states. The majority of precipitation will fall as rain...but enough cold air initially in place will allow for a mix of snow and freezing rain within the northwestern fringe of the precipitation shield. The intensifying coastal low will begin to track away from the coast and out into Atlantic Friday evening...and locations across the northern Mid-Atlantic region and Northeast should see minimal impacts from this event. A strong surface high sinking down from western Canada will bring yet another shot of arctic air into the north central U.S. on Friday. Snow showers will be possible with the leading cold front as it pushes from the Upper Midwest to the Lower Great Lakes...but a lack of moisture along the boundary should keep precipitation light. Energy amplifying aloft combined with upslope flow will force moderate snows across the Central Rockies Friday into Saturday morning. As some of the energy ejects eastward on Saturday...light precipitation should begin breaking out across the Southern to Central Plains. The Pacific Northwest will get a break from the recent widespread shower activity across the region as an upper ridge builds in aloft on Friday. However...an approaching Pacific storm should bring precipitation back into the northwestern corner of the Nation by late Saturday. Gerhardt Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php