Charleston Weather Blog

Forecast explanations, atmospheric science, and other cool weather-related stuff for Charleston, SC

The week ahead: Dealing with Debby

/ August 4, 2024 at 10:45 PM

The weather story this week is Tropical Storm Debby. Some rain associated with the system has already tried to push ashore Sunday evening, and there’s a lot more where that comes from as we get into the first few days of the new work week. The forecast continues to call for Debby to stall out and meander over Georgia, causing excessive rainfall that could lead to widespread significant flooding across the Lowcountry over the next several days. We will also deal with the potential for tropical storm-force winds, storm surge, and tornadoes as well. The slow-moving nature of the storm increases the uncertainty about exact numbers for impacts as well as on timing, but we’ll do our best here within the limits of the science.

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Sunday: Scattered to numerous storms possible ahead of Debby

/ at 9:10 PM

Tropical Storm Debby, newly christened as of 5PM, will march up the Florida coast on Sunday, strengthening as it goes over 90°+ degree water in the Gulf of Mexico. Here at home, moisture will begin to increase ahead of the storm, and that should lead to scattered to numerous showers and thunderstorms in the afternoon and evening hours. Expect balmy lows in the upper 70s to yield to highs in the upper 80s in the afternoon as the flow begins to turn more onshore and showers and thunderstorms become more numerous. A strong storm or two can’t be ruled out, as is normally the case this time of year.

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