Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 340 AM EDT Sun Jun 16 2019 Valid 12Z Sun Jun 16 2019 - 12Z Tue Jun 18 2019 ...There is a slight risk of severe thunderstorms over parts of the Mid-Atlantic and Southern Plains... ...There is a slight risk of excessive rainfall over parts of the Ohio Valley/Central Appalachians and Southern Plains into parts of the Lower Mississippi Valley... The southern edge of the Westerlies runs roughly from the Pacific Northwest eastward to the Mid-Atlantic through Tuesday. Moisture moving northward out of the Gulf of Mexico will pool along this southern edge of the Westerlies from Sunday into Tuesday. Showers and thunderstorms will develop from parts of the Ohio Valley southwestward to the Southern Plains and then southward to the Western Gulf Coast on Sunday. In addition, the showers and thunderstorms will expand eastward into the Mid-Atlantic by Sunday afternoon. From Sunday into Tuesday the showers and thunderstorms will develop from parts of the Mid-Atlantic roughly southwestward to the Southern Plains/Lower Mississippi Valley. Rain will develop over parts of the Northern Mid-Atlantic/Northeast that will move off the Northeast Coast by Monday afternoon. Meanwhile, a quasi-stationary front extending from the Ohio Valley/Upper Great Lakes northwestward to the Northern High Plains through Tuesday. Rain with daytime thunderstorms will develop over the area from Sunday into Tuesday. Additionally, diurnal heating and moisture will aid in producing showers and thunderstorms over parts of the Northern/Central Rockies into parts of the Great Basin and parts of the Nevada Sierra on Sunday into Tuesday. Furthermore, tropical moisture and upper-level energy will aid in producing showers and thunderstorms over Florida and the Eastern Gulf Coast through Tuesday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php