Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 438 PM EDT Sat Jul 08 2017 Valid 00Z Sun Jul 09 2017 - 00Z Tue Jul 11 2017 ...There is a slight risk of severe thunderstorms over parts of the Northeast and Southern Mid-Atlantic... ...There is a slight risk of severe thunderstorms over parts of the Southwest... ...Heavy rain possible over parts of the Middle Mississippi Valley and Southern Mid-Atlantic... ...Temperatures will be slightly above average over parts of the Southwest... A front extending from the Northeast to the Mid-Atlantic and westward to parts of the Lower Mississippi Valley will move eastward off the East Coast and dissipate by Monday. Showers and thunderstorms will develop along and ahead of the boundary from the Northeast to Mid-Atlantic and from the Southeast to Western Gulf Coast that will end over the Northeast and Northern Mid-Atlantic by Sunday morning. The moisture rich air over the Southeast to the Western Gulf Coast will aid in producing showers and thunderstorm over the region through Monday. A second front over South-Central Canada will move southward into the Great Lakes to the Northern Plains that will link up with a boundary over the Northern High Plains by Sunday morning. The front will move into parts of the Northeast and weaken while the western parts of the boundary will continue from the Upper Great Lakes westward to the Northern High Plains through Monday. The front will produce rain showers over parts of the Upper Great Lakes overnight Saturday into Sunday afternoon. Showers and thunderstorms will develop along the front from Upper Great Lakes to the Northern Plains by Sunday afternoon that will continue through Monday morning. A third front will move onshore over the Pacific Northwest on Sunday afternoon into evening that will advance eastward to the Northern Rockies/Northern Intermountain Region by Monday. Showers and thunderstorms will develop over parts of the Northern Rockies/Northern High Plains overnight Sunday into Monday morning. Elsewhere, moisture and weak upper-level energy will aid in producing showers and thunderstorms over parts of the Southwest/Great Basin into Central/Southern Rockies through Monday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php