Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 816 PM EDT Mon Aug 03 2020 Valid 12Z Tue Aug 04 2020 - 12Z Thu Aug 06 2020 ...Hurricane Isaias will make landfall in the Carolinas tonight, bringing severe thunderstorms, dangerous storm surge, and flash flooding... ...Impacts from Isaias, including flooding and flash flooding, will move up the East Coast Tuesday and Wednesday... ...Dangerous heat continues in the Desert Southwest and Intermountain West... Hurricane Isaias will continue to move northward. As of Monday evening, Hurricane Warnings were in effect for parts of North and South Carolina, and Tropical Storm Warnings were in effect from South Carolina to New England. Life-threatening storm surge is possible along portions of the immediate coastline and adjacent waterways of North Carolina and northeastern South Carolina. Very heavy rainfall and life-threatening flash and urban flooding are expected along the storm's track up the Eastern Seaboard. Widespread minor to moderate river flooding is also expected in the Carolinas and Mid-Atlantic states where 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 tonight. Please refer to forecasts and other products from the National Hurricane Center for additional and updated information on Isaias. Elsewhere, showers and thunderstorms were ongoing in the Mid-Atlantic and along a frontal system in the Ohio Valley and Great Lakes, unrelated to the tropical storm. Aside from widely scattered thunderstorms in the Rockies, much of the West continues to bake. Temperatures are expected to remain hot across the Desert Southwest, generally above 110 degrees for daytime highs, prompting Excessive Heat Warnings. Heat Advisories also remain in place for portions of the Great Basin. Hot weather will expand into the southern High Plains by midweek, with highs over 100 degrees and a few records possible Tuesday and Wednesday. Meanwhile, cooler than average temperatures with highs only in the 70s are expected for the northern Plains and Midwest. Burke/Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php