Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 431 PM EDT Sun Jul 09 2017 Valid 00Z Mon Jul 10 2017 - 00Z Wed Jul 12 2017 ...There is a slight risk of severe thunderstorms Upper Midwest... ...Heavy rain possible over parts of the Middle/Upper Mississippi Valley and the Ohio Valley... A front extending from Southeastern Canada westward to the Great Lakes into the Northern High Plains will dissipate over parts of Southeastern Canada and Northern New England/Great Lakes by Monday afternoon. A wave of low pressure over the Northern Plains will move eastward to Southeastern Michigan while the associate boundary begins to dissipate by Tuesday. Rain will develop over parts of the Northeast and the Lower Great Lakes overnight Sunday. Showers and thunderstorms will develop over parts of the Upper Mississippi Valley and the Upper Great Lakes on Sunday evening that will move southeastward by Monday morning into parts of the Ohio Valley and Middle Mississippi Valley while continuing over parts of the Upper Mississippi Valley/Upper Great Lakes. A Pacific cold front will push inland today and will pass through the interior Northwest and Intermountain region, linking up with a boundary over the Northern High Plains by late tonight/early Monday morning. During this time, showers and thunderstorms will develop across the northern High Plains and will spread eastward into the Upper Midwest/Great Lakes region by Tuesday. The Storm Prediction Center has highlighted a portion of the Upper Mississippi Valley today as having a slight risk for severe storms, as well as, most of Montana and northern Wyoming on Monday. Additionally, WPC has identified a portion of the Upper Mississippi Valley today as having the potential for excessive rainfall, which may lead to flash flooding. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php