Unstable weather approaches Hawaiian Islands bringing high surf, potential flooding

An unusually strong upper-level disturbance is moving across the Hawaiian Islands tonight through Saturday, bringing high surf and a flood watch.

A high surf advisory has been issued for south-facing shores with surf expected to reach 7 to 10 feet during the next several days.

Additionally, the National Weather Service in Honolulu reports the weather system is bringing scattered heavy showers and isolated thunderstorms tonight through Friday and Friday night.

The heaviest downpours will be hit or miss, but where they do occur, they will be capable of producing rainfall rates over 3 inches per hour. The threat of flash flooding is expected to be the greatest Friday through Friday evening.

Conditions should steadily improve from west to east late Friday into Saturday.