We’ve had two flash flood events in downtown Charleston over the last two days and it is entirely conceivable we may see additional issues later this evening with water still standing on the lower-lying streets of downtown. From the National Weather Service in Charleston:
SHOWERS WITH MODERATE TO HEAVY RAINS ORGANIZING ALONG THE SAVANNAH RIVER WILL MOVE INTO SOUTH COASTAL SOUTH CAROLINA THIS EVENING. THE RAIN MAY BECOME HEAVY ENOUGH TO CAUSE ADDITIONAL FLOODING PROBLEMS...ESPECIALLY IN THE DOWNTOWN CHARLESTON AND MOUNT PLEASANT AREAS. THIS AREA REMAINS EXTREMELY WET FROM HEAVIER RAINS THAT FELL EARLIER TODAY AND YESTERDAY. STORM DRAINAGE SYSTEMS ARE LIKELY STILL FULL OF WATER OR BLOCKED BY DEBRIS AND EVEN THOUGH THE TIDE WILL BE LOW AS THE RAIN MOVES THROUGH...THERE WILL BE A RISK FOR FLOODING.
If you are out and about tonight downtown or in Mt. Pleasant, please pay close attention to weather alerts in case flood advisories or Flash Flood Warnings are issued for your location. If you encounter a flooded road, do not attempt to cross it — it is nearly impossible to judge the depth of water at night and you risk damaging your vehicle or even putting your life at risk.
We are heading to low tide at 9:49 PM; next high tide is 3:27 AM. If you park in vulnerable locations in downtown Charleston, now’s not a bad time to get your car to higher ground.
Unfortunately, this wet pattern will continue for the next few days, with a risk for flooding especially near high tide virtually every day through the weekend.