Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 404 AM EDT Sun Oct 06 2013 Valid 12Z Sun Oct 06 2013 - 12Z Tue Oct 08 2013 ...There is a slight risk of severe thunderstorms over portions of the Eastern Ohio Valley and the Lower Great Lakes... ...Temperatures will be 10 to near 20 degrees above average over parts of the Ohio Valley, Lower Great Lakes, and the Central Appalachians... ...Tropical Depression Karen is forecast to become post-tropical/remnant low... Tropical Depression Karen is forecast to weaken and become a post-tropical remnant low as well as becoming absorb into a front moving off the Southeast Coast on Tuesday. The system will produce showers and thunderstorms along the Central/Eastern Gulf Coast and parts of Florida by Monday evening. See the latest advisory from the National Hurricane Center for the latest on the track and intensity of Karen. Meanwhile, a storm storm over the Upper Great Lakes will move northeastward into Southern Canada by Sunday evening. The associated front extending from the Great Lakes to the Central Gulf Coast will slowly move eastward to the Eastern Seaboard by Monday evening. Tropical Depression Karen will become a wave of low pressure along the boundary by Monday morning. Moisture from the Gulf of Mexico will flow northward along the front aiding in the development of showers and thunderstorms from the Central Gulf Coast to the Great Lakes advancing eastward to Southern New England to the Southeast Coast by Monday evening. In addition, rain will develop over parts of the Upper Midwest into parts of New England. From Sunday evening into Monday, light to moderate rain will develop near the front over parts of the Ohio Valley to the Great Lakes, moving eastward into parts of the Lower Great Lakes to Northern New England on Monday. A front over the Eastern Pacific will move onshore over the Pacific Northwest during the early morning hours of Monday, progressing to the Northern Rockies by Monday evening. The system will produce light rain along the Pacific Northwest Coast moving inland to parts of the Northern Rockies on Monday. Elsewhere, high pressure over the Central/Northern Rockies will slowly weaken by Sunday evening/Monday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php