Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 255 PM EST Mon Jan 16 2017 Valid 00Z Tue Jan 17 2017 - 00Z Thu Jan 19 2017 ...Heavy rain possible over the Pacific Northwest Coast... ...Heavy rain possible over parts of Eastern Texas and Lower Mississippi Valley... ...Heavy snow possible over the Cascades... Low pressure over the Middle Mississippi Valley will slowly move eastward to off the Northeast Coast by Wednesday. Showers and thunderstorms will develop along the associated front from the Middle Mississippi Valley to Eastern Texas/Lower Mississippi Valley that will move eastward to the Ohio Valley/Tennessee Valley by Tuesday morning then to the Mid-Atlantic Coast by Tuesday evening into Wednesday. Rain will develop parts of the Central Plains, Upper/Middle Mississippi Valley into the Ohio Valley/Great Lakes on Monday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php