Active Weather Alerts
Coastal Flood Warning
Issued: 1:31 AM Oct. 9, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 8 AM THURSDAY TO 3 PM EDT FRIDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THURSDAY THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Warning, 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 Warning, from 8 AM Thursday to 3 PM EDT Friday. For the High Rip Current Risk, from 8 AM EDT Thursday 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... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. 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. && 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 6.6 0.8 0.5 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 11/12 PM 8.0 2.2 1.3 N/A Major &&
High Surf Advisory
Issued: 1:31 AM Oct. 9, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 8 AM THURSDAY TO 3 PM EDT FRIDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THURSDAY THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Warning, 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 Warning, from 8 AM Thursday to 3 PM EDT Friday. For the High Rip Current Risk, from 8 AM EDT Thursday 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... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. 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. && 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 6.6 0.8 0.5 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 11/12 PM 8.0 2.2 1.3 N/A Major &&
Rip Current Statement
Issued: 1:31 AM Oct. 9, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 8 AM THURSDAY TO 3 PM EDT FRIDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THURSDAY THROUGH THURSDAY EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 8 AM EDT SUNDAY... * WHAT...For the Coastal Flood Warning, 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 Warning, from 8 AM Thursday to 3 PM EDT Friday. For the High Rip Current Risk, from 8 AM EDT Thursday 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... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. 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. && 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 6.6 0.8 0.5 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 11/12 PM 8.0 2.2 1.3 N/A Major &&
Small Craft Advisory
Issued: 12:17 AM Oct. 9, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM EDT THURSDAY... ...GALE WARNING REMAINS IN EFFECT FROM 2 PM THURSDAY TO 11 PM EDT SATURDAY... * WHAT...For the Small Craft Advisory, northeast winds 20 to 25 kt with gusts up to 30 kt and seas 5 to 8 ft expected. For the Gale Warning, northeast winds 25 to 30 kt with gusts up to 35 kt and seas 6 to 11 ft expected. * WHERE...South Santee River to Edisto Beach out 20 NM. * WHEN...For the Small Craft Advisory, from 2 AM to 2 PM EDT Thursday. For the Gale Warning, from 2 PM Thursday to 11 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Gale Warning
Issued: 12:17 AM Oct. 9, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM EDT THURSDAY... ...GALE WARNING REMAINS IN EFFECT FROM 2 PM THURSDAY TO 11 PM EDT SATURDAY... * WHAT...For the Small Craft Advisory, northeast winds 20 to 25 kt with gusts up to 30 kt and seas 5 to 8 ft expected. For the Gale Warning, northeast winds 25 to 30 kt with gusts up to 35 kt and seas 6 to 11 ft expected. * WHERE...South Santee River to Edisto Beach out 20 NM. * WHEN...For the Small Craft Advisory, from 2 AM to 2 PM EDT Thursday. For the Gale Warning, from 2 PM Thursday to 11 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
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