Advisory Level Swell Peaks Today
A Small Craft Advisory is posted for all Big Island waters through 6:00 p.m. Wednesday for north winds up to 25 knots with higher gusts. Rough seas of 9 to 14 feet are also forecasted late tonight through Wednesday afternoon. Inexperienced mariners should avoid navigating in these conditions.
A High Surf Advisory is posted for north facing shores from 6:00 p.m. this evening through 6:00 a.m. Thursday for a north swell building tonight and peaking Wednesday before gradually diminishing. Expect strong breaking waves, shore break and strong longshore and rip currents making swimming difficult and dangerous.
**Click directly on the images below to make them larger. Charts include: Big Island projected winds, tides, swell direction & period and expected wave heights.**
Hilo side: Surf heights are expected to build and peak in the afternoon at well overhead to double overhead. The best breaks open to the swell could reach triple overhead late in the day.
Kona side: Surf heights are forecasted from knee to about shoulder high. Largest in the afternoon.
South: ESE trade swell brings knee to shoulder high waves. Otherwise, southerly spots are below waist high.
Our current west-northwest is expected to hold through Thursday. A larger north-northwest (330-360) swell is expected to fill in and peak Wednesday up to double (maybe triple) overhead at the best exposures. This swell is expected to fade Thursday into Friday.
Pending development of storms, we may get another west-northwest over the weekend with another shot of energy expected early next week as well.
Nothing of note out of the SPAC to get excited about.
Keep in mind, surf heights are measured on the face of the wave from trough to crest. Heights vary from beach to beach, and at the same beach, from break to break.