Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Mon Aug 03 2020 Valid 00Z Tue Aug 04 2020 - 00Z Thu Aug 06 2020 ...Isaias is forecast to make landfall possibly as a hurricane in the Carolinas tonight, causing severe thunderstorms, dangerous storm surge, and flash flooding for the Eastern Seaboard... ...Dangerous heat continues in the Desert Southwest and Intermountain West... Tropical Storm Isaias will continue to move northward and could regain hurricane strength before making landfall in the Carolinas Monday night. Regardless of whether Isaias is a strong tropical storm or a hurricane, the impacts should be similar, and Isaias will cause high wind in the Carolinas and potentially in areas under Tropical Storm Watches farther north. Life-threatening storm surge is possible along the coasts of Florida, Georgia, the Carolinas, and up toward the Chesapeake Bay as Isaias moves northward very quickly. Isaias is forecast to move through the Mid-Atlantic on Tuesday and through the Northeast late Tuesday into Wednesday morning. Very heavy rainfall and life-threatening flash and urban flooding are threats along the storm's track through the Eastern Seaboard, along with minor to moderate river flooding. Moderate Risks of flash flooding is in place for much of the Carolinas and Mid-Atlantic through Tuesday as widespread rainfall totals of 3-6 inches are expected, with isolated maximum totals of 8 inches. A few tornadoes are also possible ahead of Isaias in the Carolinas Monday night. Please see the National Hurricane Center for additional and updated information on Isaias. Elsewhere, showers and thunderstorms are possible in the Mid-Atlantic north of Isaias as well as back along a frontal system in the Ohio Valley and Great Lakes. There is also potential for scattered thunderstorms in much of the High Plains today and tomorrow, near a quasi-stationary front expected to eventually move eastward late on Tuesday. Marginal to Slight Risks of severe weather are in place there. Temperatures are expected to remain hot across the Desert Southwest, with temperatures in the 110s prompting Excessive Heat Warnings again in some areas. Heat Advisories also remain in place for portions of the Central Great Basin as above normal temperatures continue. Red Flag Warnings are also in effect on Monday over portions of the Great Basin where there should be favorable conditions for fire weather. Temperatures are expected to be over 100 degrees to near record levels in the Southern High Plains Tuesday and Wednesday. Meanwhile, cooler than average temperatures with highs only in the 70s are expected for the Northern/Central Plains and the Midwest. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php