A large north-northwest swell will fill in today, then shift more out of the north and continue to build through the weekend as the wave period increases. This fairly long-lived, large north swell will quickly build surf heights today and reach well above warning level surf along north facing shores, and holding through this weekend. As the swell becomes more northerly (360) tonight and Sunday, high surf will also affect north shores of the Big Island. High tide early today and Sunday could lead to wave runup in some coastal areas. This swell will also lead to significant harbor surges in both Kahului and Hilo harbors. A Marine Weather Statement continues for those hazards.
Expect minimal surf along east facing shores today with some increase later this weekend as the large north-northwest swell turns more northerly, allowing some swell energy to wrap around the east sides of the islands. Surf along south facing shores will rise slightly over the weekend and early next week due to locally-generated wind waves, as well as a small, long-period south swell beginning Monday.
NORTH EAST
ARTICLE CONTINUES BELOW AD
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ampm
Surf: Waist to chest high NNW wind swell with occasional shoulder high sets.
Conditions: Semi glassy/semi bumpy in the morning with NNE winds 5-10mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting to the E.
NORTH WEST
ampm
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Surf: Knee to waist high WNW short period wind swell.
Conditions: Semi glassy/semi bumpy in the morning with WSW winds 5-10mph. Sideshore texture/chop conditions for the afternoon with the winds shifting to the SW.
WEST
ampm
Surf: Knee to waist high NW wind swell.
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Conditions: Semi glassy/semi bumpy in the morning with NW winds less than 5mph. Glassy conditions for the afternoon with the winds shifting to the W.
SOUTH EAST
ampm
Surf: Minimal (ankle high or less) surf.
Conditions: Clean in the morning with NNW winds 5-10mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting to the ESE.
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