Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 AM EDT Thu Apr 28 2016 Valid 12Z Thu Apr 28 2016 - 12Z Sat Apr 30 2016 ...There is a slight risk of severe thunderstorms over parts of the Southern Plains... ...There is a slight risk of severe thunderstorms over parts of the Southern Mid-Atlantic... ...Heavy rain possible over parts of the Southern Plains/Lower Mississippi Valley and parts of the Central Plains... ...Snow over parts of the Central Rockies... A strong storm over the Middle Mississippi Valley will slowly weaken and move southeastward to the Carolinas by Friday evening. Showers and thunderstorms will develop along and ahead of the front from the Ohio Valley to parts of the Central/Eastern Gulf Coast that will move eastward to parts of the Mid-Atlantic/Southeast and parts of the Central/Eastern Gulf Coast by Thursday afternoon and moving off the East Coast by early Friday morning. Rain will also develop over parts of the Northern High Plains eastward to parts of the Middle Mississippi Valley/Upper Great Lakes that will move eastward to parts of the Northeast while extending westward to parts of the Upper Mississippi Valley by Thursday evening. The rain will extend from parts of the Mid-Atlantic to parts of the Great Lakes on Friday morning that will be confined to parts of the Northern Mid-Atlantic by Friday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php