Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 AM EDT Sun Jun 09 2019 Valid 12Z Sun Jun 09 2019 - 12Z Tue Jun 11 2019 ...Periods of heavy rain with possible flash flooding to continue across portions of the southeastern U.S. on Sunday... ...Severe storms likely across parts of central and north Texas on Sunday... ...Temperatures expected to soar well-above normal across portions of the West... A broad area of low pressure, interacting with deep tropical moisture, will continue to produce periods of heavy rain with possible flash flooding across portions of the southeastern U.S. Flash flooding will remain a particular concern along the southern Appalachians from Upstate South Carolina through western North Carolina into southwestern Virginia, where several inches of rain has already fallen and numerous floods have been reported. Southeasterly winds will continue to draw deep moisture into this region, supporting more rounds of heavy rain and raising additional flash flooding concerns. The Weather Prediction Center is highlighting this region with a Moderate Risk for flash flooding on Sunday. On Monday, this system will finally be dislodged by a strong cold front approaching from the west, with rains spreading north into the Northeast. This strong cold front will continue to push across the upper and mid Mississippi valley while sinking south across the southern Plains on Sunday. Across portions of the southern Plains - warm, moist and unstable air is expected to support strong to severe thunderstorms ahead of the front, especially across parts of north and central Texas, where the Storm Prediction Center is indicating an Enhanced Risk for severe thunderstorms. Storms capable of producing damaging winds and isolated large hail appear likely across this region Sunday afternoon and evening. Behind the front, daytime highs on Sunday will only reach into the 60s to low 70s (10-20 degrees below normal) across much of the central Plains. This airmass will continue to shift south on Monday, with daytime highs expected to remain 20-30 degrees below normal across portions of west Texas. In contrast to the colder temperatures in the central U.S., temperatures along the West Coast will begin to soar this period. Building high pressure and easterly winds will begin to support above normal temperatures across California into western Oregon on Sunday. Temperatures will continue to climb across much of the western U.S. through the early part of the week, with temperature anomalies as much as 20-30 degrees above normal across portions of western Oregon on Tuesday. Excessive Heat Watches are in effect for Monday and Tuesday for the central valleys of California. Red Flag warnings are also in effect for this area, as well as the North Bay Mountains of California on Sunday. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php