Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 PM EDT Sun May 19 2013 Valid 00Z Mon May 20 2013 - 00Z Wed May 22 2013 ...Moderate risk of severe weather for eastern Kansas and northeast Oklahoma... ...Slight risk of severe weather for parts of the Upper Mississippi Valley to parts of the Southern Plains... ...Heavy rainfall possible for the Upper Midwest... Quasi-stationary storm over the plains will produce showers and thunderstorms over the Central/Southern Plains and parts of the Upper/Middle Mississippi that will move into the Great Lakes/Ohio Valley and parts of the Northeast to the Lower Mississippi Valley/Southern Plains by Tuesday. In addition, light to moderate rain will develop over Upper Midwest, waning to rain over the Northern Plains by Tuesday. Additional upper-level energy will move into the storm aiding in the development of showers and thunderstorms over parts of the Northern/Central Rockies during the afternoon and evening hours of Sunday and Monday. During the nighttime and morning hours, the precipitation will be mainly in the form of rain over the region through Monday. A deepening upper-level low over the Gulf of Alaska will rotate just off the Pacific Northwest Coast Monday night into Tuesday. The energy will produce rain over parts of the Pacific Northwest into parts of Northern California on Tuesday morning. Elsewhere, much weaker upper-level low over the Southern Mid-Atlantic will produce showers and thunderstorms over parts of the Southeast/Mid-Atlantic Sunday through Tuesday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php