The National Weather Service has issued a high surf advisory for Oahu until 6 p.m. Wednesday.

Surf along the south shores of Oahu is expected to build to 6 to 9 feet through Monday night and rising to 7 to 10 feet Tuesday. Surf is expected to remain elevated until Wednesday. 

Swimmers should expect strong breaking waves and strong currents. Beachgoers are urged to heed advice from Ocean Safety officials and exercise caution.

The National Hurricane Center continues to track a disturbance in the Eastern Pacific. Forecasters said Monday night that the system is located about 1,350 miles east-southeast of the Big Island.

Environmental conditions are expected to be conducive for development. A tropical cyclone will likely form in the next few days while the system moves west-northwest at 15 to 20 miles per hour.

The National Hurricane Center said there’s a 70 percent chance that a tropical cyclone could form in the next 48 hours, but there’s a 90 percent chance that it could develop into a tropical cyclone in the next five days.