Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 424 PM EDT Mon Aug 05 2013 Valid 00Z Tue Aug 06 2013 - 00Z Thu Aug 08 2013 ...Gradual warm-up for the East... ...Stormy weather for the central plains and into the Midwest... ...Scattered showers and storms over the Intermountain West into the Rockies... ...Remaining hot and dry over the southern plains... Expect seasonal to below normal temperatures to continue across much of the eastern U.S. but with a gradual warm-up as cool high pressure moves offshore and a pair of weak warm fronts extending out of the Midwest lift through the middle Atlantic states into the Northeast. A chance for showers and thunderstorms will cover much of the Southeast and middle Atlantic states through most of the day on Tue into the overnight hours. Meanwhile a strong area of lower pressure will remain centered over central Canada. To its south a string of weaker upper level disturbances will move across the U.S., directing both a series of cold fronts and showers and thunderstorms across the northern and central plains into the Midwest. Later this afternoon into tonight some of these thunderstorms may be severe across portions of the northern and central plains, as indicated by the Day 1 Convective Outlook from SPC. Heavy to excessive rainfall is also a threat over parts of the central plains into mid Mississippi valley, as shown by the WPC Day 1 Excessive Outlook. By Tue night into early Wed this excessive rainfall threat is expected to shift further east into the lower Ohio valley. To the south, the heat will continue to build under a dome of high pressure, with dry conditions and above average temperatures persisting across much of Oklahoma and Texas through the period. Further west, expect scattered showers and thunderstorms both days across the Southwest into the southern Great Basin and Rockies. An upper level disturbance lifting northeastward out of the Southwest may drive some organized storms with potentially excessive rainfall amounts across the central Rockies into the adjacent high plains on Wed. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php