Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 301 AM EDT Fri Jun 23 2017 Valid 12Z Fri Jun 23 2017 - 12Z Sun Jun 25 2017 ...Tropical Depression Cindy expected to bring areas of flash flooding and severe weather from the lower Mississippi valley to the Mid-Atlantic... ...Well above average temperatures expected into the weekend for much of the Southwest and Northwest... Tropical Depression Cindy is centered across the lower Mississippi valley as of early this morning, and is expected to continue moving northeastward through the next couple days. Cindy is forecast to gradually become post-tropical by Friday evening as it begins to merge with a cold front crossing the Ohio valley and Appalachians. For the latest information on Tropical Depression Cindy, please refer to the advisories being issued by the Weather Prediction Center. Showers and thunderstorms are expected to be widespread today from the lower Mississippi valley to the Northeast, as moisture from Cindy is transported northward ahead of the frontal boundary. Severe thunderstorms and flash flooding will both continue to be possible in association with this system from portions of the lower Mississippi valley to the Mid-Atlantic through Friday night. For further details on the severe weather threat please refer to products issued by the Storm Prediction Center. Post-Tropical Cyclone Cindy is expected to move off the Mid-Atlantic coastline on Saturday and into the water of the Atlantic Ocean. Farther south, the cold front will continue to bring areas of showers and storms from the Southeast to the southern plains Saturday into Sunday, with locally heavy rain possible. Behind the front, cooler temperatures are forecast for much of the Midwest, with scattered showers and thunderstorms possible late Saturday into Sunday in association with a secondary cold front. The extreme heat that has persisted across the southwestern U.S. in recent days will very slowly begin to wane into the weekend. Temperatures are expected to remain well above average through Sunday, but the number of record highs in the Southwest should decrease. The Northwest, on the other hand, will see rising temperatures and the onset of potentially dangerous heat for some areas as high pressure builds in overhead. High temperatures on Saturday are forecast to be 15 to 25 degrees above average across portions of the Northwest, with record highs possibly in jeopardy for some areas. Heat advisories and excessive heat warnings have already been issued for portions of the Northwest. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php