Coastal Flood Advisory

Locations Affected

Charleston, SC ∙ North Charleston, SC ∙ Mount Pleasant, SC ∙ Ravenel, SC ∙ Mt Pleasant Regional Airport Fasion Field, SC ∙ Ladson, SC ∙ Charleston-North Charleston Division, SC ∙ Wadmalaw, SC ∙ McClellanville, SC ∙ Kiawah Island, SC

Full Alert Message

Coastal Hazard Message National Weather Service Charleston SC 101 PM EDT Wed Sep 23 2026 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING... ...HIGH RIP CURRENT RISK IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... * WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected along shorelines and tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at Charleston). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 8 PM EDT this evening. For the High Rip Current Risk, from Thursday morning through Thursday evening. * IMPACTS...This will result in some roads becoming impassable and minor flooding of properties. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...High tide will occur around 6:29 PM today at Charleston. Saltwater inundation will be possible 1 to 2 hours before and after high tide. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Visit water.weather.gov for additional water level and flood impact information. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && Time of high total tides are approximate to the nearest hour. Charleston Harbor SC MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 23/06 PM 7.1 1.3 1.2 N/A Minor 24/07 AM 7.0 1.2 1.5 N/A Minor 24/07 PM 7.6 1.8 1.6 N/A Moderate 25/07 AM 7.3 1.5 1.5 N/A Minor 25/08 PM 7.4 1.6 1.3 N/A Minor

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