A high-surf advisory has been issued for the east-­facing shores of most Hawaiian isles from Kauai to the Big Island due to strong trades creating choppy surf, effective through 6 a.m. Thursday, weather officials said.

The National Weather Service said surf is expected to rise to 6 to 10 feet high today along east-facing shores of the isle chain. The impacts are moderate, with strong breaking waves and strong rip currents, making swimming difficult and dangerous.

Beachgoers, swimmers and surfers should exercise caution and heed all advice given by Ocean Safety officials.

A wind advisory, meanwhile, remains in effect for Maui County isles and the Big Island, with localized gusts up to 55 mph, through 6 p.m. today, with the possibility of an extension. Winds of 20 to 30 mph can knock down tree branches and cause car doors to slam, weather officials warned, and result in sporadic power outages.

Weather forecasters said a series of high-pressure systems passing north of the islands will maintain strong trades through most of the week, then begin weakening on Friday into the weekend.

Monday morning’s satellite imagery showed an east-to-west-oriented band of showery low clouds, with the appearance of a fish bone, aimed at Kauai, with Oahu at the fringe. Passing showers are expected on these two isles through today.