Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 341 AM EDT Mon Jul 11 2016 Valid 12Z Mon Jul 11 2016 - 12Z Wed Jul 13 2016 ...There is a slight risk of severe thunderstorms from central Plains to the Upper Midwest... ...Heavy rain possible for northeast Montana and from the central Plains to the Upper Mississippi Valley... ...Temperatures will be 15 to 25 degrees below average over parts of the Northern Rockies and Northern High Plains... A low pressure system will lift north and east through the Dakotas and into the Canadian Prairie over the next couple of days. Showers and thunderstorms will develop along and ahead of the advancing cold front from northern Kansas to Minnesota today- shifting further into the Upper Mississippi valley and western Great Lakes region Tuesday and Wednesday. Conditions will be favorable for storms to turn severe. The Storm Prediction Center has highlighted portions of the central Plains and Upper Midwest as having a slight risk for severe weather through Wednesday morning. Additionally, onshore flow will aid in producing rain over parts of the Pacific Northwest/Northern Intermountain Region today. A cold front will sweep through the Pacific Northwest tonight and into Tuesday and diminish before reaching the Northern Rockies. A very moist airmass over the Gulf Coast states, combined with an upper-level low, will aid in producing showers and thunderstorms from east Texas to the Southeast. Areal coverage will be dependent on daytime heating. Overnight Monday, showers and thunderstorms will develop near the upper-level low over the Central Appalachians to the Southern Mid-Atlantic into Tuesday. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php