Charleston metro area at risk of coastal flooding amid bouts of heavy rainfall | News

Date: 2021-09-20 11:37:30

The Charleston metro area was placed under a coastal flood advisory as widespread showers were anticipated to dump several inches of rain over much of the southeastern portion of the state.

The National Weather Service’s Charleston office issued an alert the morning of Sept. 20, warning that periods of showers with isolated thunderstorms could cause flash flooding through Sept. 21.

The region was expected to see 2 to 4 inches of rain, with some areas seeing as much as 6 inches, through 6 a.m. Sept. 21, according to an emergency weather service alert.

The coastal portions of Charleston and Colleton counties were at risk of coastal flooding, at least through the evening of Sept. 20, according to the weather service.

In downtown Charleston, a potential overlap of heavy rain with some coastal flooding could result in an enhanced flooding risk. No roads were closed as of 7 a.m. Sept. 20, but the city listed more than 20 cross streets as having the potential for standing water.

Kiawah and Seabrook islands were expected to experience flooding, according to a weather service alert. Nearly 2 inches of rain had already fallen between Edisto Beach in Colleton County and Hunting Island in Beaufort County, with more rain expected through 9:30 a.m. The combination of elevated high tides and the ongoing showers would create minor flooding, mainly in low-lying areas.

The heavy rain is a result of a wet weather pattern, which developed early Sept. 20 off the coasts of Beaufort, Colleton and Charleston counties, according to the weather service.

Meanwhile, Tropical Storm Peter was forecast to bring heavy rain to much of the Caribbean, including the Bahamas, U.S. Virgin Islands and Puerto Rico.

The National Hurricane Center’s 5 a.m. update on Sept. 20 placed the storm around 245 miles east-northeast of the northern Leeward Islands, moving on a west-northwest track at 14 mph. The storm recorded wind speeds of 50 mph.

There were no coastal watches or warnings in effect early Sept. 20, but the system is forecast to continue moving west-northwest throughout the next couple of days. None of the U.S. mainland was in Peter’s path, according to the hurricane center’s most recent update.

Call Jocelyn Grzeszczak at 843-323-9175. Follow her on Twitter at @jocgrz.


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