Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Tue Jun 05 2018 Valid 00Z Wed Jun 06 2018 - 00Z Fri Jun 08 2018 ...There is a slight risk of severe thunderstorms over part of the Northern Plains into the Upper Mississippi Valley... ...Heavy rain possible over parts of the Middle Mississippi Valley... ...Temperatures will be 10 degrees below average over parts of the Northeast... A front extending from the Northeast Coast to the Mid-Atlantic westward across the Ohio Valley into the Northern Plains will move southward to the Southeast into the Tennessee Valley/Middle Mississippi Valley by Thursday. Showers and thunderstorms will develop along and ahead of the boundary from parts of the Northeast/Mid-Atlantic into the Ohio Valley that will dissipate overnight Tuesday. In addition, another front extending along the Gulf Coast westward into the Southern High Plains will move southward into the Gulf of Mexico and dissipate by Wednesday evening. Showers and thunderstorms will develop along the boundary through Wednesday evening. The associated upper-level energy will also aid in producing showers and thunderstorms over Florida through Thursday. Meanwhile, upper-level energy moving over the top of an upper-level ridge over the Northern Rockies/Northern Plains will move eastward to the Great Lakes/Ohio Valley by Thursday. The energy will aid in producing showers and thunderstorms over the Northern High Plains that will expand while moving eastward over the Upper Mississippi Valley/Northern Plains by Wednesday morning. The showers and thunderstorms will move eastward into the Great Lakes/Middle Mississippi Valley and extending across parts of the Central Plains into the Northern High Plains by Thursday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php