Active Weather Alerts
High Surf Advisory
Issued: 5:10 PM Oct. 8, 2025 – National Weather Service
...COASTAL FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... ...HIGH RIP CURRENT RISK IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Watch, up to two feet of inundation above ground level possible along shorelines and tidal waterways (8.0 to 8.2 feet Mean Lower Low Water at Charleston Thursday and 8.4 to 8.6 feet Mean Lower Low Water Friday). For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 5 to 6 feet expected in the surf zone. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Watch, from Thursday morning through Friday afternoon. For the High Rip Current Risk, from Thursday morning through Thursday evening. For the High Surf Advisory, from 2 PM Thursday to 8 AM EDT Sunday. * IMPACTS...Significant saltwater inundation will render numerous roads impassable. Properties may also flood. 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 10:06 AM Thursday at Charleston. Saltwater inundation will be possible several 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 -------- --------- --------- --------- ------- -------- 08/10 PM 6.9 1.1 0.8 N/A None 09/10 AM 8.1 2.3 1.0 N/A Major 09/10 PM 7.6 1.8 1.8 N/A Moderate 10/11 AM 8.5 2.7 1.6 N/A Major 10/11 PM 7.1 1.3 1.5 N/A Minor &&
Coastal Flood Watch
Issued: 5:10 PM Oct. 8, 2025 – National Weather Service
...COASTAL FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... ...HIGH RIP CURRENT RISK IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Watch, up to two feet of inundation above ground level possible along shorelines and tidal waterways (8.0 to 8.2 feet Mean Lower Low Water at Charleston Thursday and 8.4 to 8.6 feet Mean Lower Low Water Friday). For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 5 to 6 feet expected in the surf zone. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Watch, from Thursday morning through Friday afternoon. For the High Rip Current Risk, from Thursday morning through Thursday evening. For the High Surf Advisory, from 2 PM Thursday to 8 AM EDT Sunday. * IMPACTS...Significant saltwater inundation will render numerous roads impassable. Properties may also flood. 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 10:06 AM Thursday at Charleston. Saltwater inundation will be possible several 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 -------- --------- --------- --------- ------- -------- 08/10 PM 6.9 1.1 0.8 N/A None 09/10 AM 8.1 2.3 1.0 N/A Major 09/10 PM 7.6 1.8 1.8 N/A Moderate 10/11 AM 8.5 2.7 1.6 N/A Major 10/11 PM 7.1 1.3 1.5 N/A Minor &&
Rip Current Statement
Issued: 5:10 PM Oct. 8, 2025 – National Weather Service
...COASTAL FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... ...HIGH RIP CURRENT RISK IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Watch, up to two feet of inundation above ground level possible along shorelines and tidal waterways (8.0 to 8.2 feet Mean Lower Low Water at Charleston Thursday and 8.4 to 8.6 feet Mean Lower Low Water Friday). For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 5 to 6 feet expected in the surf zone. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Watch, from Thursday morning through Friday afternoon. For the High Rip Current Risk, from Thursday morning through Thursday evening. For the High Surf Advisory, from 2 PM Thursday to 8 AM EDT Sunday. * IMPACTS...Significant saltwater inundation will render numerous roads impassable. Properties may also flood. 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 10:06 AM Thursday at Charleston. Saltwater inundation will be possible several 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 -------- --------- --------- --------- ------- -------- 08/10 PM 6.9 1.1 0.8 N/A None 09/10 AM 8.1 2.3 1.0 N/A Major 09/10 PM 7.6 1.8 1.8 N/A Moderate 10/11 AM 8.5 2.7 1.6 N/A Major 10/11 PM 7.1 1.3 1.5 N/A Minor &&
Small Craft Advisory
Issued: 5:03 PM Oct. 8, 2025 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 5 AM THURSDAY TO 6 AM EDT SUNDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 3 feet expected. * WHERE...Charleston Harbor. * WHEN...From 5 AM Thursday to 6 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
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