Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 411 PM EDT Wed May 11 2016 Valid 00Z Thu May 12 2016 - 00Z Sat May 14 2016 ...There is a slight risk of severe thunderstorms over the Ohio and Middle Mississippi Valley into the Southern Plains... ...There is a slight risk of severe thunderstorms over the Southern Mid-Atlantic... A front extending from the Upper Mississippi Valley southward to the Southern Plains/Southwest will move eastward to the Northern Appalachians southward to the Southeast and along the Gulf Coast by Friday. Upper-level energy over the Lower Great Lakes/Eastern Ohio Valley will move eastward off the Mid-Atlantic Coast and weaken by Thursday night. The energy will produce showers and thunderstorms over parts of the Ohio/Tennessee Valleys into the Southern Mid-Atlantic that will move off the Southern Mid-Atlantic Coast by Thursday evening. Areas of rain will also develop over parts of the Northern Mid-Atlantic through late Thursday morning. Along and ahead of the boundary showers and thunderstorms will develop over parts of the Upper Mississippi Valley southward to the Southern Plains/Lower Mississippi Valley that will move eastward to the Northern Mid-Atlantic southward to the Southeast and westward along the Gulf Coast by Friday morning. Rain will develop parts of the Northern High Plains eastward to parts of the Upper Mississippi Valley on Wednesday evening moving into parts of the Upper Great Lakes by Thursday afternoon. Rain will develop over parts of the Northern Appalachians/Northern Mid-Atlantic on Friday morning. Meanwhile, upper-level energy over the Central High Plains/Central Rockies will produce showers and thunderstorm over parts of the area on Wednesday evening that will move southeastward into the Southern Plains by Thursday morning. In addition, upper-level energy rotating around an upper-level low over South-Central Canada will induce a front over the Northern Rockies/Northern High Plains on Thursday morning that will move southeastward to the Middle Mississippi Valley/Central Plains into the Northern Intermountain Region by Friday morning. Rain will develop over parts of the Northern Intermountain Region on Thursday evening and expand eastward into the Northern High Plains by later Thursday night. The rain will move into parts of the Upper Mississippi Valley/Northern Plains and the Northern High Plains by Friday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php