117 FXUS01 KWBC 051959 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Sun Jul 05 2026 Valid 00Z Mon Jul 06 2026 - 00Z Wed Jul 08 2026 ...Heavy rain and flash flooding threat continues across the Mid-Atlantic and Northeast... ...Dangerous heat persists across the Southeast despite a shrinking eastern U.S. heat footprint... ...Strong to severe thunderstorms expected across parts of the Plains through Monday... ...Heat begins building across the West early this week... The footprint of the oppressive heat that affected portions of the central and eastern U.S. last week will continue to contract through early this week as seasonable to below-normal temperatures spread across much of the Northeast, Mid-Atlantic, and Ohio Valley. The cooler air will be accompanied by a slow-moving frontal boundary and areas of low pressure, supporting multiple rounds of showers and thunderstorms with an increasing threat of heavy rainfall and flash flooding across portions of the Mid-Atlantic and Northeast. In contrast, above-normal heat will persist across the Southeast, with afternoon highs well into the 90s from the Carolinas to northern Florida. Combined with high humidity and warm overnight lows in the 70s to near 80 degrees, these conditions will continue to pose an elevated risk of heat-related illness, particularly for those without adequate cooling or hydration. The greatest potential for heavy rainfall will extend from the upper Ohio Valley eastward into southern New England. Additional thunderstorms are expected to develop later today through this evening across the Mid-Atlantic. While the environment is expected to be less favorable than yesterday's setup that produced widespread damaging winds across parts of the Northeast and Mid-Atlantic, some storms may still produce locally damaging wind gusts. In addition to the ongoing Moderate Risk (level 3 of 4) of Excessive Rainfall across portions of eastern Pennsylvania, northern New Jersey, and southern New York through tonight, WPC has introduced a Moderate Risk of Excessive Rainfall for Monday from eastern Pennsylvania and New Jersey into Long Island and southern Connecticut, where numerous flash floods are likely, with significant events possible. This elevated risk will be attributed in part to a surface low slowly tracking eastward from near the northern Mid-Atlantic coast that will focus an axis of heavy rainfall, increasing the potential for flash flooding, especially where multiple rounds of storms occur and in urban areas. From the southern Plains to the Southeast, hot and humid conditions will fuel thunderstorms through this evening. Some of these storms may become strong to severe, producing large hail and damaging winds, especially from the Texas Panhandle eastward into north-central Texas. Drier and more settled conditions are forecast over the southern High Plains on Monday; however, storms capable of producing damaging winds may develop farther east, particularly across the lower Mississippi Valley. Across the northern Plains, a cold front will serve as a focus for thunderstorm development later today, with large hail, damaging winds, and an isolated tornado possible, especially across northern North Dakota. The front will continue east into the eastern Dakotas and Minnesota on Monday, where some storms may also produce large hail and damaging winds. Heat will begin to build across the West this week, with temperatures climbing several degrees above normal across portions of southern California and the Desert Southwest by Tuesday. Pereira Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$