Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 330 PM EDT Sun Jun 20 2021 Valid 00Z Mon Jun 21 2021 - 00Z Wed Jun 23 2021 ...Tropical Depression Claudette to continue producing pockets of heavy rain and thunderstorms throughout the eastern Carolinas this evening, with gusty winds possible along coastal regions into early Monday morning... ...Heavy rain and severe thunderstorms possible across parts the Midwest tonight and into the Interior Northeast on Monday... ...Dangerous and record-breaking heat wanes across California and the Southwest to start the workweek, while expanding into the Pacific Northwest... Tropical Depression Claudette is currently moving into Upstate South Carolina this afternoon and is forecast to swing northeastward into eastern North Carolina by Monday morning. As it does so, Claudette is expected to restrengthen into a tropical storm and produce gusty winds along coastal sections of North Carolina. Tropical Storm Warnings have been issued. Additionally, areas of heavy rain and severe thunderstorms will remain possible from northern Florida and the Florida Panhandle to southeast North Carolina overnight. By Monday afternoon the system will exit into the eastern Atlantic Ocean and all associated weather hazards will quickly diminish. Farther northwest, a strengthening area of low pressure and potent cold front will be responsible for isolated flash flooding concerns and severe thunderstorms throughout the Midwest and portions of the Great Lakes tonight. The Storm Prediction Center has issued and Enhanced Risk (level 3/5) of severe weather from Lower Michigan and northwest Ohio to far southeastern Iowa. Isolated tornadoes, damaging wind gusts, and large hail are all a possibility. Multiple rounds of heavy rain could also cause isolated instances of flash flooding throughout this same region. By Monday, the aforementioned cold front is forecast to reach the Ohio and Lower Mississippi valleys. Showers and thunderstorms will be widespread ahead of and along the frontal boundary. A few storms could turn severe and produce damaging wind gusts and isolated tornadoes between the Ohio Valley and interior sections of the Northeast. Meanwhile, flash flooding will be the main hazard throughout the Tennessee Valley and Deep South on Monday, as many areas recently received an excess amount of rain over the last week. The cold front is then expected to squeeze most of the rain chances to the Southeast, Gulf Coast, and East Coast on Tuesday, while also ushering in comfortable and below average temperatures. For the western U.S., a long-awaited cooling trend is finally on the way for the Southwest on Monday. High temperatures will once again soar well into the triple digits this afternoon, but will settle to near and slightly below average early this week as an upper-level low spins off the coast of California. Excessive Heat Warnings and Heat Advisories remain in effect for much of California, the Southwest, and the central Great Basin. The opposite will be true throughout the Pacific Northwest as this region has mostly avoided the recent heat wave until now. High temperatures 10 to 20 degrees above average will be felt across Oregon and Washington through Monday, before cooler temperatures return on Tuesday. With the ongoing heat and exceptionally dry soil, fire weather is also a concern for much of the Intermountain West and Southwest over the next couple of days. Snell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php