Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Tue May 10 2016 Valid 00Z Wed May 11 2016 - 00Z Fri May 13 2016 ...There is a slight risk of severe thunderstorms over parts of the Ohio Valley, Central Plains, and Southern Plains... ...Heavy rain possible over parts of the Ohio/Tennessee Valleys... ...Heavy rain possible over parts of the Southern Plains... A strong storm over the Northern Plains will slowly move northeastward to Western Ontario/Upper Great Lakes by Thursday. Ahead of the low, upper-level energy will aid in producing showers and thunderstorms over the Ohio/Tennessee Valleys that will move off the Mid-Atlantic Coast by Thursday. Rain will also develop over parts of the Great Lakes/Upper Mississippi Valley, ending over the Upper Mississippi Valley overnight Tuesday and over the Great Lakes by Wednesday afternoon. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php