Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Thu Apr 17 2014 Valid 00Z Fri Apr 18 2014 - 00Z Sun Apr 20 2014 ...Heavy rain over the Eastern Gulf Coast and the Southeast Coast... ...Temperatures will be 10 to 15 degrees below average over the Southeast... Low pressure developing over the Gulf of Mexico will move into the Eastern Gulf Coast by Friday morning then across northeast Florida to the Southeast Coastline by Saturday morning. Showers and thunderstorms with heavy rain will develop over the Central/Eastern Gulf Coast on Friday morning will, likewise, move eastward across Florida overnight Friday. Additionally, moderate to heavy rain will develop over parts of Southeast on Friday afternoon into evening, with light rain over parts of the Southern Mid-Atlantic Coast by Saturday morning. Meanwhile, a front over the Great Lakes to the Southern Plains will move eastward to the Northern/Central Appalachians while dissipating by Saturday morning. Light rain will develop over parts of the Great Lakes moving eastward to the Maine Coast by Saturday. Snow will also develop on the backside of the front over parts of Northern New England by Saturday, too. In addition, light rain will develop along the front over parts of the Southern Plains on Thursday evening moving into Middle/Lower Mississippi Valley on Friday morning before dissipating by Friday afternoon. A front moving onshore over the Pacific Northwest will move eastward to the Northern/Central Plains by Saturday. The system will produce rain over the Pacific Northwest on Thursday evening moving eastward to the Northern Rockies/Great Basin with snow at higher elevations on Friday morning. Rain will move into the Northern Plains/Upper Mississippi Valley by Friday night into Saturday. A small area of snow will develop over parts of the Upper Great Lakes on Saturday morning, while showers and thunderstorms will develop over parts of the Northern/Central Plains on Friday evening. Furthermore, a weakening upper-level low off the Southern California Coast will move inland to the Southwest by Saturday. The energy will aid in producing scattered showers and thunderstorms over parts of the Great Basin/Southern Rockies on Friday evening. The showers and thunderstorms will expand into parts of the Southern High Plains by Saturday morning. Rain will also develop over parts of the Central/Southern Rockies and the Southeast by Saturday morning. Another front will begin to come onshore over the Pacific Northwest on Saturday. The storm will produce rain over the Northwest Coast on Saturday, too. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php