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forum.HYCOM.org is intended to facilitate the following:

  • Share information on the use of HYCOM data
  • Connect our users with the "experts" that develop and generate the model data

Please request a HYCOM.org account here (https://hycom.org/account-request) or subscribe using your own Google ID for posting to this forum.

If you are a HYCOM beginner, then please check/read the following documentation before posting to the forum.
HYCOM Documentation

  • Please provide the Model & Experiment number (e.g., GLBy0.08/expt_93.0).
  • Also include the *full URL* of the dataset (i.e., access method) in your post.
  • No experiments served at hycom.org include tidal forcing (i.e. no tides).
  • Do not subset more than 1 day at a time using ncss.hycom.org
  • Do not use more than 1 concurrent connections per IP address when downloading data from ncss.hycom.org
  • Do not use more than 10 concurrent connections per IP address when downloading data from any hycom.org service
  • Make sure your email Subject matches the context of your message Body.
  • If you have multiple questions, then please break them up into separate posts (threads).
  • Reduce/Remove any lengthy email signatures when posting to the forum.
  • THREDDS servers update/restart daily between 2:00 AM - 3:00 AM, and 12:00 PM - 1:00 PM EST/EDT.
    ** Please avoid requesting data during this maintenance window, else you are likely to get an error **



This is a demonstration product from the HYCOM Consortium and is provided as is. HYCOM Consortium does not warrant or suggest that this data is fit for any particular purpose. Further, neither COAPS nor HYCOM consortium guarantees availability, service updates, or timely data delivery.

All hycom data provided is UNCLASSIFIED. DoD DISTRIBUTION A. Approved for Public Release; Distribution Unlimited.