High Surf — Koolau Windward, Hawaii

2025-04-04 to 2025-04-07 · Koolau Windward, Hawaii

Event narrative

Large surf of 10 to 15 feet created strong currents, beach runup, and hazardous conditions for channels.

Wider weather episode

A large north swell brought twenty to twenty six foot waves to north facing shores and ten to fifteen foot waves to east facing shores. These waves brought dangerous conditions to affected shorelines as well as beach runup.

Source: NOAA Storm Events Database, event_id 1245351. Narrative written by the NWS forecast office that issued the report.