Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 325 AM EDT Tue Jun 23 2015 Valid 12Z Tue Jun 23 2015 - 12Z Thu Jun 25 2015 ...There is a slight risk of severe thunderstorms from the Mid-Atlantic to Southern New England... ...There is a slight risk of severe thunderstorms over parts of the Central/Northern High Plains and parts of the Middle Mississippi Valley... ...Heavy rain possible over parts of the Middle Mississippi Valley into the Western Ohio Valley... A front extending from the Lower Great Lakes roughly southwestward to the Central Plains will move eastward off the Northeast/Mid-Atlantic Coast by late Tuesday night. Showers and thunderstorms will develop along and ahead of the boundary from the Northeast/Lower Great Lakes to parts of the Ohio Valley/Central Appalachians that will move eastward off the Northeast/Mid-Atlantic Coast by early Wednesday morning. In addition, deep moisture and weak upper-level energy will aid in producing showers and thunderstorms over parts of the Southeast into the Southern Mid-Atlantic Tuesday into Wednesday. Meanwhile, a developing wave of low pressure over the Central High Plains will move into the Central Plains by Wednesday. Showers and thunderstorms will develop over parts of the Central Plains that will move into Upper Midwest by Wednesday evening. Additionally, showers and thunderstorms will develop over parts of the Southern Rockies on Tuesday/Wednesday afternoon and evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php