FZUS72 KCHS 071300 MWSCHS Marine Weather Statement National Weather Service Charleston SC 900 AM EDT Fri Aug 7 2026 AMZ340-360-362-364-071600- Charleston Harbor- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 900 AM EDT Fri Aug 7 2026 ...WATERSPOUTS POSSIBLE ACROSS THE NEARSHORE WATERS THROUGH NOON... Conditions are favorable for the development of waterspouts this morning, with Doppler Radar indicating towering cumulus over the local nearshore waters and in the vicinity of the Charleston Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... If waterspouts occur, move your boat away from the waterspout. Remember that waterspouts can develop rapidly and produce winds and seas that are dangerous for vessels and everyone onboard. Report waterspouts via social media or by calling the National Weather Service at 1-888-383-2024. && $$