Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 257 AM EST Tue Mar 01 2016 Valid 12Z Tue Mar 01 2016 - 12Z Thu Mar 03 2016 ...There is a slight risk of severe thunderstorms over parts of the Lower Mississippi Valley, Ohio Valley, Tennessee Valley, and Southeast... ...Heavy rain for parts of the Pacific Northwest Coast... ...Heavy snow over the Northern Cascades... ...Snow from parts of the Great Lakes to Northern New England... A storm over parts of the Middle Mississippi Valley/Ohio Valley will move northeastward to Labrador by Wednesday evening. Showers and thunderstorms will develop along and ahead of the associated front from parts of the Southern Plains to Western Ohio Valley, on Tuesday morning, that will move eastward to the Southern Mid-Atlantic Coast to the Eastern Gulf Coast by Wednesday morning. Snow will also develop over parts of the Middle Mississippi Valley eastward to the Great Lakes that will move into parts of the Western Ohio Valley by Tuesday evening. Rain will develop over parts of the Eastern portion of the Ohio Valley on Tuesday afternoon and evening and move northeastward to parts of New England to the Northern Mid-Atlantic Coast by Wednesday morning and off the coast by Wednesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php