NWS Issues Coastal Flood Watch for Charleston and Coastal Colleton for Saturday
Coastal Colleton and Charleston County face up to one foot of above-ground inundation as a coastal flood watch takes effect Saturday morning, according to the National Service Charleston SC. The weather agency issued the alert at 2:16 p.m. on Friday, warning that rising water levels will impact shorelines and tidal waterways from 6 a.m. to 11 a.m.
High tide threatens Charleston roads and property
High tide in Charleston is scheduled for 8:23 a.m. on Saturday, following an evening high tide at 7:51 p.m. on Friday. The National Weather Service states that saltwater inundation will occur one to two hours before and after high tide, potentially reaching heights between 7.8 and 8.0 feet Mean Lower Low Water.
The incoming water threatens to leave some roadways impassable and cause minor property flooding across low-lying coastal zones. Drivers encountering flooded streets face severe mechanical risks, as fast-flowing water depths of just 12 inches can sweep away most vehicles. Motorists driving on wet roads also contend with hydroplaning hazards caused by excessive vehicle speed, standing water, and low tire tread depth.
Safety measures during tidal inundation
Residents living in flood-prone zones or camping in low-lying areas should move to higher ground immediately if conditions worsen. Anyone told to evacuate must do so without delay while securing their homes and disconnecting utilities if time permits. Floodwaters demand extreme caution, as moving water only six inches deep can knock a person off their feet.
Rip currents present an additional danger along coastal areas, capable of sweeping strong swimmers away from the shore. Swimmers caught in a current should relax, float, avoid swimming against the force, and follow the shoreline or signal for help if unable to escape. Drivers facing flooded roadways should turn around immediately rather than attempt to cross water of unknown depth.
Coastal flood watch ends Saturday morning
The coastal flood watch remains active until 11 a.m. on Saturday. Water levels are expected to recede following the morning high tide cycle as the warning period concludes.