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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).
Text Products
- Surf Forecast for O`ahu
- Collaborative Surf Discussion
- Statewide Surf Observations
- High Surf Criteria
- Marine Forecast Matrix
- Coastal forecast for Hawaiian Waters
- Click the zone name below for the forecast
- Offshore forecast for Hawaiian Waters
- North Pacific High Seas Forecast (140W-160E, EQ-30N)
- South Pacific High Seas Forecast (120W-160E, EQ-25S)
- Hawaii Buoys (from the National Data Buoy Center)
- Latest Marine Reports for Hawaii (links to RSS feeds included)
- Click the buoy name for observations
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 |
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| Pacific Streamline Analysis (130E-110W,30S-30N) |
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| North Pacific Surface Analysis (130E-110W,EQ-60N) From the Unified Surface Analysis |
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| Pacific Surface Forecast (130E-110W,30S-50N) |
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| Pacific Wind Wave Analysis and Forecasts |
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| Pacific Significant Cloud Features (160E-110W, 30S-50N) |
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| Pacific Sea Surface Temperature Analysis satellite-derived (updated twice weekly) |
Symbols & Test Chart (gif) Symbols & Test Chart (TIF) |
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Related Links
Tides
- Upcoming tides for select Hawaii locations
- Tides for Honolulu
- Tide tables for Hawaii
- Interactive Map for Tidal Information
Radio Fax/FTPMail
- KVM-70 Radio Fax Broadcast Schedule
- KVM-70 Marine Radiofax Charts
- Help file for FTPMAIL
- Worldwide Radio Fax Broadcast Schedule
Surf/Beach Safety
- Oahu Surf Climatology
- Why do Surf Heights vary from place to place and moment to moment
- Jellyfish Information
- Hawaii Beach Safety
- Honolulu County Ocean Safety
- Kauai Beach Explorer
- Maui County Ocean Safety
Other NOAA Information
- Marine Debris: FAQ - Japan Tsunami Debris
- National NWS Marine Forecasts
- NOAA Raster Navigational Charts
- National Coastal Data Development Center
- Definitions for Marine Forecasts
- Rip Current Safety
- Hawaiian Islands Humpback Whale National Marine Sanctuary
- Papahanaumokuakea Marine National Monument
- Marine Mammal Stranding Contact for the Pacific
- NOAA Fisheries Protecting Wildlife Information
- Ocean Prediction Center
- Tropical Prediction Center
- Weather Prediction Center
- Unified Surface Analysis Manual
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.