Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 351 PM EDT Mon May 1 2017 Valid 00Z Tue May 2 2017 - 00Z Thu May 4 2017 ...Weather gradually improving across much of the nation through Tuesday... The large low pressure system that has been plaguing much of the nation over the past few days is now beginning to lift northward into Canada. This is the result of an impressive upper level low that is tracking across the Midwest. Ahead of the occluded surface low, the trailing cold front will bring widespread showers and thunderstorms to much of the eastern U.S. through Monday night. Some of these thunderstorms could be severe, and the Storm Prediction Center has additional details on the severe weather threat. The cold front will exit the East Coast by Tuesday morning, with sunny to partly cloudy skies behind it and noticeably cooler and drier conditions. With the storm lifting across the northern Great Lakes, rain and snow showers may linger across portions of the Upper Midwest and the upper peninsula of Michigan into Tuesday morning. Elsewhere across the eastern U.S., no wintry precipitation is expected. Temperatures should remain below normal across the northern Plains and the Upper Midwest through mid week. By Wednesday morning, another area of low pressure is forecast to develop along the residual frontal boundary from the previous storm system, and this will increases rainfall chances across the southern Plains and into the Deep South as moisture from the Gulf of Mexico is advected northward. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php