Charleston’s clearest immediate concern Friday is coastal flooding around the morning high tide, followed by strengthening northeast winds. Skies should remain sunny, with temperatures climbing from the mid-50s to about 70 degrees; the windier pattern is expected to persist through the weekend.
Coastal Flooding Arrives With Friday’s High Tide
A Coastal Flood Advisory remains in effect through 8 a.m. Friday for Charleston and Colleton counties. Saltwater could inundate shorelines and tidal waterways by up to a half-foot; Charleston’s morning high tide is forecast around 6:04 a.m., and some low-lying roads may be difficult or impossible to pass, according to National Weather Service Charleston SC.
Local Tide Levels and Road Closures
The City of Charleston’s TIDEeye page says minor coastal flooding typically begins at 7.0 feet MLLW, and roads can become impassable and close as tides approach 7.5 feet MLLW.
Friday night stays mostly clear, with a low near 56 and northeast winds increasing to 18 mph. Drivers should avoid barricades and never cross water of unknown depth, particularly around tidal roads and waterfront neighborhoods.
Sunny Weekend, But The Wind Turns Serious
Saturday is forecast to be sunny, with a high near 72. Weekend gusts could reach 29 to 35 mph, especially Saturday and Sunday afternoons. Sunday should also be bright and mild, with a high near 73.
The stronger wind will raise the risk of rip currents, high surf and beach erosion. A Small Craft Advisory beginning Friday evening and a Gale Watch for coastal waters from Saturday morning through late Sunday night are in effect, as noted by National Weather Service Charleston SC; boaters should consider staying in port as seas build.
High Tides Keep Flood Risk Elevated Into Next Week
Strong northeast winds and higher astronomical tides could make coastal flooding more persistent from the weekend into the middle of next week. Water levels may rise during both morning and evening high tides, with the greatest concerns around Monday through Wednesday, as the full moon arrives Monday and lunar perigee follows Wednesday, National Weather Service Charleston SC reported National Weather Service Charleston SC.
Dry weather and highs in the lower to middle 70s are expected through early next week.
Thursday’s Hoodline report had noted that northeast winds were expected to increase. With stronger gusts ahead, beachgoers should check conditions before entering the water, and boaters should secure vessels.
