Hawaiian Marine Products

Mariners, the National Weather Service needs your reports - become part of the U.S. Voluntary Observing Ship Project today! Contact our Port Meteorological Officer to take part.

Marine Product Dissemination Information

Marine section from the Area Forecast Discussion
issued at: Jul 23, 2017 3:32 PM HST

Surf along east facing shores due to swell from ex-Tropical Cyclone Fernanda has fallen below advisory criteria, and the High Surf Advisory is cancelled as of this afternoon.

High pressure centered far northeast of the islands will support trade winds through the forecast period. A surface trough will pass east to west over the island chain tonight and Monday, which will cause the trade winds to temporarily weaken. Stronger trade winds will begin filling in across the eastern end of the state as early as midday Monday. The trade winds will strengthen to Small Craft Advisory levels by Tuesday morning for the typical windy zones around Maui County and the Big Island.

The largest high tides of the month will occur tonight and Monday night. These tides may result in coastal flooding in some areas. A Special Weather Statement (see SPSHFO product on our website) is posted to highlight the potential hazards.

Incoming moisture associated with a surface trough will interact with a broad upper trough over the islands through Monday. This interaction could result in isolated thunderstorms over coastal and offshore waters through Monday night (and possibly through Tuesday for the western offshore waters).

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Charts

Marine Graphics

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 information on FTPMAIL click here.

Graphic Forecasts
for Hawaiian Islands and surrounding coastal waters
Pacific Streamline Analysis
(130E-110W,30S-30N)
tif Latest 00Z 06Z 12Z 18Z  
gif Latest 00Z 06Z 12Z 18Z Loop
North Pacific Surface Analysis
(130E-110W,EQ-60N)
From the Unified Surface Analysis
gif Latest 00Z 06Z 12Z 18Z Loop
Pacific Surface Forecast
(130E-110W,30S-50N)
gif 00Z Charts 24 hr 48 hr 72 hr
gif 12Z Charts 24 hr 48 hr 72 hr
Pacific Wind Wave
Analysis and Forecasts
12Z Charts
tif Analysis 24 hr 48 hr 72 hr
gif Analysis 24 hr 48 hr 72 hr
00Z Charts
tif Analysis 24 hr 48 hr 72 hr
gif Analysis 24 hr 48 hr 72 hr
Pacific Significant Cloud Features
(160E-110W, 30S-50N)
gif Latest 03Z 15Z
Pacific Sea Surface
Temperature Analysis

satellite-derived (updated twice weekly)
Symbols & Test Chart (gif)
Symbols & Test Chart (TIF)

Related Links

Tides

Radio Fax/FTPMail

Surf/Beach Safety

Other NOAA Information

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.
Marine Area of Responsibility Map
Map of Marine Zones

The marine forecasts issued are based on marine observations and model data. Marine observations include buoy and ship reports. Ship reports are invaluable to the NWS, and are reported through the U.S. Voluntary Observing Ship Project. If you are a mariner, please consider joining the nearly 1,000 volunteer ships from around the world that observe the weather at their location.