Active Weather Alerts
Coastal Flood Advisory
Issued: 12:39 AM Aug. 22, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... * WHAT...Up to one foot of inundation above ground level along shorelines and tidal waterways (7.5 to 7.7 feet Mean Lower Low Water at Charleston). * WHERE...Coastal Colleton and Charleston Counties. * WHEN...Until 10 PM EDT this evening. * IMPACTS...This will result in some roads becoming impassable and minor flooding of properties. * ADDITIONAL DETAILS...High tide occurred earlier this evening around 7:37 PM at Charleston. Saltwater inundation remains possible until 10 PM. will occur around 7:58 AM Friday 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. && 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 -------- --------- --------- --------- ------- -------- 21/07 PM 7.5 1.7 1.3 N/A Moderate 22/08 AM 6.5 0.7 1.1 N/A None 22/08 PM 7.3 1.5 1.1 N/A Minor 23/09 AM 6.5 0.7 1.0 N/A None 23/09 PM 7.2 1.4 1.1 N/A Minor 24/09 AM 6.4 0.6 0.9 N/A None &&
Flood Watch
Issued: 12:31 AM Aug. 22, 2025 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT FROM 8 AM EDT FRIDAY THROUGH LATE SATURDAY NIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast Georgia, including the following areas, Bulloch, Candler, Coastal Bryan, Coastal Chatham, Coastal Liberty, Coastal McIntosh, Effingham, Evans, Inland Bryan, Inland Chatham, Inland Liberty, Inland McIntosh, Jenkins, Long, Screven and Tattnall and southeast South Carolina, including the following areas, Allendale, Beaufort, Charleston, Coastal Colleton, Coastal Jasper, Dorchester, Hampton, Inland Berkeley, Inland Colleton, Inland Jasper and Tidal Berkeley. * WHEN...From 8 AM EDT Friday through late Saturday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Numerous to widespread showers and thunderstorms will impact the region Friday into Saturday. Rainfall amounts of 2 to 4 inches can be expected through early Sunday morning with localized amounts exceeding 6 inches. Ground conditions remain wet and any sustained period of heavy rainfall will likely lead to areas of flash flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared to protect life and property, especially in areas prone to flooding. If flooding develops, move to higher ground immediately. If driving, be prepared for flooded roadways and possible road closures. &&
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