Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 AM EDT Mon Oct 21 2019 Valid 12Z Mon Oct 21 2019 - 12Z Wed Oct 23 2019 ...Strong storm system to bring a variety of weather impacts to the central and eastern states... A strong low pressure system will continue to intensify across the Upper Midwest on Monday as it lifts northeastward towards Ontario by Tuesday night. This is expected to produce widespread rain from the eastern Dakotas to the upper Great Lakes, with some locations receiving over an inch of rainfall before the storm system departs. Unlike the previous strong surface low that hammered the northern Plains with blizzard conditions, temperatures on the west side of the low will not be cold enough to support any widespread snow. There may be a small area of rain/snow mix on the northwestern edge, but nothing significant is currently anticipated. Numerous showers and thunderstorms are expected farther southward towards the Gulf Coast along and ahead of the trailing cold front. There will be enough instability ahead of the front across parts of the Deep South to support the development of some strong to severe thunderstorms on Monday, and there may be additional strong storms over the Southeast U.S. on Tuesday. Given the progressive nature of the storm, the flash flood threat appears to be limited at this time. Elsewhere across the continental U.S., heavy rain and mountain snow is forecast across western Washington and Oregon as persistent onshore flow coupled with a frontal passage leads to numerous showers and orographic precipitation enhancement. Sunny to partly cloudy conditions are expected to continue from California to the High Plains, with below normal temperatures across the Rockies and Plains, and slightly above normal for the Desert Southwest. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php