Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 258 AM EST Tue Dec 06 2016 Valid 12Z Tue Dec 06 2016 - 12Z Thu Dec 08 2016 ...Severe thunderstorms possible for portions of the Southeast... ...Heavy snow possible for portions of the Northern Plains and Upper Mississippi Valley... ...Rain/Freezing rain possible over parts of the Central Appalachians and on the leeward side of interior Pacific Northwest... ...Temperatures will be 15 to 35 degrees below average over the Northern High Plains... Low pressure over the Tennessee Valley will move northeastward off the Mid-Atlantic Coast by Wednesday morning. The system will produce showers and thunderstorms over parts of the Southeast/Tennessee Valley that will move off the Southeast Coast by Tuesday evening. Rain will also develop over parts of the Lower Mississippi Valley/Tennessee Valley/Ohio Valley and parts of the Southern Mid-Atlantic. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php