Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 433 AM EDT Mon May 22 2017 Valid 12Z Mon May 22 2017 - 12Z Wed May 24 2017 ...There is a slight risk of severe thunderstorms possible across the Southern High Plains... ...Heavy rain possible from the Mid-Atlantic Coast to the Southeast and to the Central/Western Gulf Coast... A front extending from the Lower Great Lakes to the Southeast then to the Central/Western Gulf Coast will be quasi-stationary through Tuesday evening. Showers and thunderstorms will develop along and ahead of the boundary from the Southern Mid-Atlantic to the Southeast then to the Central/Western Gulf Coast through Tuesday evening. Rain will also develop over the Northern Mid-Atlantic into the Northeast that will move off the New England Coast by Tuesday afternoon. Additionally, rain will develop over parts of the Upper Mississippi Valley/Upper Great Lakes through Monday evening. Meanwhile, upper-level energy over the Central Rockies will move eastward into the Southern Plains overnight Monday. The energy will produce showers and thunderstorms over parts of the Central/Southern High Plains that will move eastward to the Middle Mississippi Valley to the Southern Plains by Monday evening. Additional upper-level energy moving southward over the Northern Plains will induce a front over parts of the Central Plains into the Upper Great Lakes that will move eastward to the Ohio Valley to the Lower Mississippi Valley/Western Gulf coast by Tuesday evening. Showers and thunderstorms will develop over parts of the Middle Missouri Valley into the Northern Plains by Monday afternoon that will move into Great Lakes/Western Ohio Valley southwestward to the Southern Plains overnight Monday. The showers and thunderstorms will continue over parts of the Upper Great Lakes/Western Ohio Valley into the Middle Mississippi Valley to the Southern Plains/Western Gulf Coast into Tuesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php