NNW Swell Shows for Hilo Side, Kona Blocked
Alerts (as of 1:00 a.m.)
A Wind Advisory is posted through 6 p.m. Thursday for east winds from 20 to 30 mph, gusting to 50 mph.
A Gale Warning is posted for the ʻAlenuihāhā channel and waters to the south of the Big Island through 6 p.m. Thursday.
A Small Craft Advisory is posted for all other Hawaii County waters through 6 p.m. Thursday.
A High Surf Advisory is posted for east facing shores until 6 p.m. Friday.
**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 forecast from overhead to double overhead today for the best breaks.
Kona side: Wave heights are expected to be pretty flat today.
South: Wave heights are expected to be ankle/knee high today. Spots that are more open to the wrap will be bigger.
Northwest to north-northwest swell is expected from Thursday to Saturday. The Big Island will be heavily shadowed from this swell which is expected to peak Saturday. East-northeast trades are creating a trade wind swell for the Hilo side, but it will be sloppy and pretty blown out.
Nothing significant is expected out of the SPAC this week. A gradual building of swell is expected out of the southwest on Sunday. Overlapping swells will continue through the 2nd.
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.