WHUS42 KCHS 201025 CFWCHS Coastal Hazard Message National Weather Service Charleston SC 625 AM EDT Wed Aug 20 2025 SCZ049-050-201830- /O.NEW.KCHS.CF.Y.0012.250820T2100Z-250821T0100Z/ /O.CON.KCHS.SU.Y.0006.000000T0000Z-250822T0000Z/ /O.CON.KCHS.RP.S.0005.000000T0000Z-250821T0000Z/ Coastal Colleton-Charleston- 625 AM EDT Wed Aug 20 2025 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THURSDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 9 PM EDT THIS EVENING... * WHAT...For the High Surf Advisory, large breaking waves up to 6 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, up to one foot of inundation above ground level expected along shorelines and tidal waterways (7.6 to 7.8 feet Mean Lower Low Water at Charleston). * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the High Surf Advisory, until 8 PM EDT Thursday. For the High Rip Current Risk, through this evening. For the Coastal Flood Advisory, from 5 PM this afternoon to 9 PM EDT this evening. * IMPACTS...This will result in some roads becoming impassable and minor flooding of properties. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...High tide will occur around 7 PM this evening 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. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. 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 -------- --------- --------- --------- ------- -------- 20/06 AM 6.0 0.2 1.0 N/A None 20/07 PM 7.7 1.9 1.5 N/A Moderate 21/07 AM 6.6 0.8 1.4 N/A None 21/08 PM 7.5 1.7 1.3 N/A Moderate 22/08 AM 6.4 0.6 1.0 N/A None && $$ GAZ117-119-139-141-SCZ048-051-201830- /O.CON.KCHS.SU.Y.0006.000000T0000Z-250822T0000Z/ /O.CON.KCHS.RP.S.0005.000000T0000Z-250821T0000Z/ Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh- Beaufort-Coastal Jasper- 625 AM EDT Wed Aug 20 2025 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THURSDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...For the High Surf Advisory, large breaking waves up to 6 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Georgia Beaches, and South Carolina Beaches. * WHEN...For the High Surf Advisory, until 8 PM EDT Thursday. For the High Rip Current Risk, through this evening. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$