Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 PM EDT Sun Apr 30 2017 Valid 00Z Mon May 1 2017 - 00Z Wed May 3 2017 ...Large storm system to bring a variety of weather impacts through Monday... A large and expansive low pressure system has been a high impact event over the past couple of days, and it will continue to make weather headlines going into Monday. This system is multi-faceted, with precipitation associated with the upper low over the central High Plains, and heavy rain and strong thunderstorms along and ahead of the cold front. Through Sunday night, numerous storms with heavy rainfall and gusty winds are expected for the central Gulf Coast and extending northward to the southern Appalachians. Given the recent history of this storm system, the thunderstorms that develop will be capable of producing heavy rain which may result in localized flash flooding, especially for poor drainage areas. However, the magnitude of the flooding will be less compared to the past 24 hours. On the western side of the low pressure system, unseasonably cold air in place from the upper low will create a winter-like environment with light to moderate snow on the northwestern edge of the precipitation shield from western Kansas to northern Minnesota through early Monday. A multitude of winter weather bulletins from the local forecast offices are in effect, including blizzard warnings for northwestern Kansas and southwestern Nebraska! The greatest snowfall accumulations are expected overnight since the higher sun angle tends to limit daytime snow accumulation this late in the season. Elsewhere, a Pacific cold front will bring scattered rain and mountain snow showers from the Northwest to the northern Rockies through early Monday. In the temperature department, expect readings to be well below normal from the western High Plains to the Upper Midwest, and above normal on Monday ahead of the front across the East Coast region. More seasonal temperatures will arrive by Tuesday after the front exits the East Coast. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php