Hawaiian Marine Products

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Marine Product Dissemination Information

Marine section from the Area Forecast Discussion
issued at: May 28, 2015 3:29 AM HST

The Wednesday evening ascat pass found trade winds a bit stronger than expected around Kauai and Oahu, with areas of winds near 20 kt estimated around and west of Kauai. It appears that winds drop off abruptly further to the east around Maui county. Winds and seas are forecast to remain below small craft advisory /sca/ levels throughout the Hawaiian coastal waters during the rest of this week and through the weekend.

The current south swell will continue to subside today, although a series of smaller south swells will maintain small to moderate surf along south facing shores through the rest of the week. Latest wavewatch guidance continues to show a significant south swell arriving Saturday night, then peaking late Sunday into Monday, with resulting surf likely reaching advisory levels for south facing shores. This swell was produced by a strong gale low east of New Zealand with a long fetch aimed toward Hawaii a few days ago. Data from the aunuu buoy near american samoa shows this swell increasing during the night, with heights and periods running near wavewatch guidance thus far.

Otherwise, surf will remain well below advisory levels through the next several days with only small swells expected.

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The Marine Radiofax Charts for Station KVM-70 are now available via E-mail or FTP. Click here for more details on the charts available. For the help file on FTPMAIL click here.

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About the Marine Program

Routine forecast are issued for the Hawaiian Coastal Waters, the Offshore Waters, and High Seas. Coastal Waters are within 40 nautical miles of the main Hawaiian islands. The Offshore area extends from this 40 nautical mile mark to 240 nautical miles of the main Hawaiian islands. The High Seas forecasts are issued for an area that covers approximately 15,000,000 square miles, extends as far north as 30N, and as far south as 25S, and between 120W south of the equator and 140W north of the equator to 160E.
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