Hilda Prompts High Surf Advisory
A Small Craft Advisory is posted for the ʻAlenuihāhā channel as well as Big Island south and leeward waters. Winds of 20 to 25 knots out of the northeast are forecasted with rough seas up to 10 feet. This advisory is posted through 6:00 p.m. Monday. Inexperienced mariners should avoid navigating in these conditions.
A High Surf Advisory is posted for the east side as swell generated by hurricane Hilda builds. The advisory is posted through 6:00 a.m. Wednesday. Wave heights of 6 to 10 feet are expected Monday, building to 8 to 12 feet Monday night and Tuesday. 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: Wave heights are expected to be head high to well overhead today for exposures open to Hilda swell. Dropping trend but still plenty big throughout the day.
Kona side: Wave heights ankle/waist high are expected for the best breaks open to the SW swells.
South: Wave heights ankle/waist high are expected for the best breaks open to the SW swells. Hilda swell builds for spots open to the ESE and could get into the head high to well overhead range.
Our current south-southwest swell is expected to continue fading early this week. A very small southwest swell is expected to build in today. No significant swells are on the horizon out of the SPAC. Small swells are expected the second half of the week but a bigger swell is possible middle of next week if a storm near New Zealand develops as expected.
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.