Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 341 AM EDT Sat Aug 06 2016 Valid 12Z Sat Aug 06 2016 - 12Z Mon Aug 08 2016 ...Showers behind a stationary front will keep temperatures cooler than normal in the central U.S.... ...Heavy rain and flash flooding possible for the Four-Corners region in the southern Rockies... ...Locally heavy rains expected to linger in the southeastern U.S. through the weekend... A cold front extending from Quebec through the Northeast and across the Midwest and southern Plains will continue to track south and east this weekend. Scattered showers and thunderstorms are forecast to develop along and ahead of the front; some of the storms could be strong, but are not expected to reach severe levels. A cooler and drier airmass will overspread much of New England to the Mid-Atlantic and will continue over the Midwest into the northern Plains as surface high pressure builds in behind the front. Afternoon temperatures will be near or slightly below the average for early August from the western states to the Northeast today. As the front reaches the southern portions of Mid-Atlantic and Tennessee valley it will slow its pace. Moisture pooled over that region will interact with the slow-moving boundary and an upper-level low near the Bahamas. Much of the Southeast will have showers and thunderstorms during the afternoon and evening hours. Higher rainfall rates over the area may cause localized flash flooding, especially across northern Florida. Out west, a series of weak upper level disturbances interacting with monsoonal moisture will to generate widespread showers and thunderstorms across the Four-Corners region in the southern Rockies. The risk for flash flooding will remain elevated early this morning before the disturbances move off to the northeast into the central Plains. A cold front move across the Intermountain West this weekend will bring cooler temperatures and showers to much of the region. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php