High surf advisory goes into effect Friday morning for south-facing shores of Kauaʻi, Niʻihau

A large south swell will gradually fill in Aug. 8 and peak Aug. 9 near warning thresholds, causing strong breaking waves and strong currents along the state’s south-facing shorelines.

Forecasters with the National Weather Service in Honolulu issued a high surf advisory for those shores that will be in effect the entire weekend, from 6 a.m. Aug. 8 through 6 a.m. Aug. 11.

The advisory includes the south-facing shorelines of Kauaʻi and Niʻihau.

Large breaking waves of 7 to 10 feet are forecast by Aug. 8 along the southern shores of the island, with wave heights increasing to between at least 10 and 14 feet by Aug. 9.

The public should heed all advice from ocean safety officials. Remember: When in doubt, don’t go out.

National Weather Service forecasters in Honolulu also extended the time period for coastal flooding for this weekend, with flooding now expected along coastlines and low-lying coastal areas through late the night of Aug. 10.