Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 339 AM EDT Tue Jun 24 2014 Valid 12Z Tue Jun 24 2014 - 12Z Thu Jun 26 2014 ...There is a slight risk of severe thunderstorms over the Central High Plains... ...Heavy rain possible over the Northeast to the Eastern Ohio Valley... A weakening front extending from the Great Lakes to the Southern Plains will dissipate overnight Tuesday. Showers and thunderstorms will develop along and ahead of the boundary from the Western Gulf Coast/Lower Mississippi Valley to the Ohio Valley/Great Lakes that will move to the Central Appalachians to the Gulf Coast on Wednesday. A second front extending from the Upper Great Lakes to the Northern High Plains will move eastward to the Northeast while trailing across the Ohio Valley westward to the Northern High Plains by Wednesday evening. Showers and thunderstorms will develop along the front over parts of the Upper Great Lakes/Upper Mississippi Valley through Wednesday morning. As the boundary moves eastward, showers and thunderstorms will move into the Northeast by Tuesday evening and extend into parts of the Mid-Atlantic by Wednesday evening. Meanwhile, upper-level impulses will aid in developing showers and thunderstorms over parts of the Southeast into the Mid-Atlantic Tuesday into Wednesday. In addition, upslope flow and upper-level energy will produce showers and thunderstorms over parts of the Central/Southern High Plains through Wednesday. Elsewhere, upper-level energy will move onshore over the Northwest along with weak boundaries that will move inland to the Central Rockies by Wednesday. The energy will trigger showers and thunderstorms over parts of the Northern Rockies on Tuesday afternoon into evening that will move to the Northern High Plains by Wednesday. Additional upper-level energy will move onshore over the Pacific Northwest by Wednesday producing rain over parts of the Northwest Coast that will move inland to the Northern Intermountain Region by Wednesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php