Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 346 AM EDT Sun Jun 02 2019 Valid 12Z Sun Jun 02 2019 - 12Z Tue Jun 04 2019 ...Severe weather possible for parts of the Northeast on Sunday... ...Severe weather possible Sunday and Monday across parts of the High Plains, with a threat for flash flooding across parts of the Southern and Central Plains... ...Much above normal temperatures persist across the Northwest... A cold front moving into the Eastern U.S. today will serve as a focus for showers and thunderstorms with a slight risk of severe weather from parts of the Mid-Atlantic into the interior Northeast. Though storms may contain heavy rainfall, the flash flood threat should be marginal given the quick progression of the front. This front will usher in a much cooler airmass, with daytime highs as much as 10 to 20 degrees below normal from the Great Lakes to the Northeast. Frost advisories and freeze warnings are in effect across far northern Minnesota, Wisconsin, and the Upper Peninsula of Michigan for Sunday and Monday mornings. To the south, persistent upper level ridging will keep temperatures across the Southeast and Gulf Coast near or above normal with generally dry weather through the short range period. A stubborn upper level low over the Southwest U.S. will bring a threat for strong to severe thunderstorms in the lee of the Central and Southern Rockies and into the adjacent High Plains. SPC highlights this region within a slight risk for both Sunday and Monday. A steady stream of moisture into the Central U.S. will also result in a heavy rainfall and flash flooding threat, particularly across parts of the Texas Panhandle, Oklahoma, and southwest Kansas which has already seen above normal rainfall and remains susceptible to additional rains. This threat continues into Monday as a frontal boundary remains nearly stationary over the region. In the west, diurnally driven showers and thunderstorms will continue Sunday and Monday with locally heavy to excessive rainfall possible especially along the favored terrain. An upper ridge building across the Northwest will result in much above normal temperatures across the Pacific Northwest and into the Northern Rockies and High Plains with daytime highs 10 to 20 degrees above average possible. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php