Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 342 PM EDT Tue May 13 2014 Valid 00Z Wed May 14 2014 - 00Z Fri May 16 2014 ...Heavy rain possible over parts of the Eastern Ohio Valley/Central Appalachians and over parts of the Southern Appalachians... ...Temperatures will be 10 to 20 degrees below average over parts of the Middle/Lower Mississippi Valley... ...Temperatures will be 10 to 20 degrees above average over the West Coast... A slow moving front extending from the Great Lakes to the Lower Mississippi Valley will inch its way eastward to the Lower Great Lakes to the Eastern Gulf Coast by Thursday. Moisture from the Gulf of Mexico will pool along the boundary aiding in the development of showers and thunderstorms over parts of the Western/Central Gulf Coast on Tuesday evening. Showers and thunderstorms will also develop over parts of the Central/Southern Appalachians and into parts of the Lower Great Lakes on Tuesday evening. Light to moderate rain will develop over parts of the Great Lakes/Western Ohio Valley tapering off to light rain by early Wednesday morning. Showers and thunderstorms will develop along and near the front from the Central Gulf Coast to parts of the Ohio Valley with moderate rain from Wednesday morning to Wednesday evening. The Showers and thunderstorms will retreat to the Southeast by Thursday morning. In addition, light to moderate rain will develop over parts of the Middle Mississippi Valley moving into the Great Lakes while increasing to moderate to heavy rain by Wednesday evening. By Thursday morning, the area of light to moderate rain will develop from the Lower Great Lakes to the Central Appalachians. Meanwhile, upper-level jet energy over the Northern/Central Rockies will aid in triggering scattered areas of rain and highest elevation snow over the Central Rockies through Thursday morning. Additionally, high pressure over the Central Rockies will aid in contributing to Santa Ana wind over parts of Southern California through to Wednesday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php