Large breaking waves to impact north, east-facing shores of Big Island beginning Monday

The National Weather Service has issued a high surf warning for north- and east-facing shores of Big Island is in effect from 12 p.m. Monday, Feb. 23 through 6 p.m. Tuesday, Feb. 24.

According to forecasters, a long-period north-northeast swell will build Monday and peak overnight into Tuesday. This large swell will produce significantly larger than normal surf across some coastlines, particularly in windward areas. The swell will gradually decline Tuesday night through Friday.

Surf heights along north-facing shores are projected to reach 10 to 16 feet Monday and peak at 18 to 25 feet Monday night and Tuesday. Surf heights along east-facing shores are projected to reach 7 to 10 feet Monday and peak at 12 to 16 feet Monday night and Tuesday.

The impact is expected to be very high with powerful longshore and rip currents present at most beaches. Large breaking waves and strong currents may impact harbor entrances and channels causing challenging boat handling in Hilo.

Ocean water is expected to surge and sweep across beaches, which may create potential for impacts to coastal roads and infrastructure, mainly along windward coasts.

Breaking waves could endanger those standing along the shoreline. Be prepared for road closures and postpone entering or leaving channels affected by the high surf until the surf subsides.

The warning may be extended, dropped, or modified as conditions develop. For updated information on ocean and weather alerts, visit the National Weather Service website.