Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 408 AM EDT Fri Apr 25 2014 Valid 12Z Fri Apr 25 2014 - 12Z Sun Apr 27 2014 ...There is a slight risk of severe thunderstorms over parts of the Southern Mid-Atlantic... A front extending from the Ohio Valley to the Lower Mississippi Valley/Southern Plains will move eastward off the East Coast by late Friday night. The system will produce showers and thunderstorms from the Lower Mississippi Valley to the Ohio Valley that will move eastward to the Mid-Atlantic Coast by Friday evening and off the Coast by later Friday night. Light to moderate rain will develop over parts of the Great Lakes that will likewise move eastward to the Northern Mid-Atlantic while intensifying to moderate to heavy rain by Friday evening. The rain will move into New England by Saturday and remain over the area through Saturday evening. In addition, light snow will develop over parts of the Upper Great Lakes through Saturday morning. Another front over the Northern Rockies/Central California will slowly move eastward to the Central/Southern Rockies by Saturday evening. The system will produce higher elevation snow and lower elevation rain from the Northern Rockies to parts of the Pacific Northwest/Central California with the rain expanding into part of the Northern High Plains and the Great Basin by Friday evening. The precipitation will end over California by Saturday afternoon. Additionally, the higher elevation snow and lower elevation rain will move into parts of the Central/Southern Rockies by Saturday evening. Showers and thunderstorms will also develop over parts of the Northern Plains on Saturday evening too. As the system move out of the Rockies, moisture from the Gulf of Mexico will move northward over the Central/Southern Plains aiding in the development of showers and thunderstorms over the Southern Plains into the Middle Mississippi Valley on Saturday evening. By Saturday evening, another front will approach the Pacific Northwest bringing more rain and highest elevation snow to the region. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php