Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 348 AM EDT Fri Sep 09 2016 Valid 12Z Fri Sep 09 2016 - 12Z Sun Sep 11 2016 ...There is a slight risk of severe thunderstorms over parts of the Central Plains and Middle Mississippi Valley... ...Heavy rain possible over parts of the Western Ohio Valley... A weakening front extending from the Northeast across the Ohio Valley into parts of the Middle Mississippi Valley will dissipate across the Ohio and Middle Mississippi Valleys by Friday evening. The remaining parts of the boundary will move off Southern New England overnight Friday. Showers and thunderstorms will develop along and near the boundary from parts of the Central Plains eastward to the Ohio Valley into the Mid-Atlantic/Northeast on Friday. Moisture that is pooling along the front will continue to produce showers and thunderstorms from parts of the Ohio Valley to parts of the Mid-Atlantic Friday night into Saturday morning. Meanwhile, a front moving southeastward out of West-Central Canada will move into the Northern Plains by Friday morning advancing eastward to the Lower Great Lakes/Central Appalachians to the Western Gulf Coast by Saturday evening. The system will produce showers and thunderstorms over parts of the Northern Plains into the Northern Rockies on Friday morning. The showers and thunderstorms will expand into parts of the Upper Mississippi Valley/Upper Great Lakes into the Central Plains by Friday evening. The showers and thunderstorms will end Northern High Plains by late Friday evening. The showers and thunderstorms a long the front will move into the Great Lakes on Saturday morning extending to the Northeast by Saturday afternoon into evening. The showers and thunderstorms will also move into parts of the Southern Plains overnight Friday and into parts of the Lower Mississippi Valley into the Ohio Valley on Saturday. Elsewhere, tropical moisture over Florida will aid in producing showers and thunderstorms through Saturday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php