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Naval Oceanography Portal


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Naval Oceanography Portal

The United States Naval Meteorology and Oceanography Command (NMOC) provides critical information from the ocean depths to the most distant reaches of space, meeting needs in the military, scientific, and civilian communities. 

The following NMOC components make their products available to the public through this portal:

The U.S. Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Department of Defense and a standard of time for the entire United States.


The following NMOC components have moved their publicly-available products to

Joint Typhoon Warning Center (JTWC)

Naval Oceanography Operations Command (NOOC)

Fleet Numerical Meteorology and Oceanography Center (FNMOC)

Naval Oceanographic Office (NAVO)


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Privacy Advisory

We will not obtain personally identifying information about you when you visit our site unless you choose to provide such information to us. If you choose to send email to the site webmaster or submit an online feedback form, any contact information that you provide will be used solely to respond to your request.


Form Folder Requirements Form
Form Folder Earth Orientation Help
Send an e-mail regarding Earth Orientation products.
Contact Information Regarding Products
Form Folder Meteorology/Oceanography Help
Send an e-mail regarding meteorology or oceanography products.
Form Folder Astronomy Help
Send an e-mail regarding Astronomy related products. Please choose from the topical menu below.
Form Folder Time Help

Security & Privacy Policy

Notice: This is a U.S. Government Web Site


1. This is a World Wide Web site for official information about the Naval Meteorology and Oceanography Command (NMOC). It is provided as a public service by the NMOC. The purpose is to provide information and news about the NMOC to the general public.

2. All information on this site is public domain and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.

3. Unauthorized attempts to upload information or change information on this Web site are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act.

4. For site security purposes and to ensure that this service remains available to all users, this government computer system employs software programs to monitor network traffic to identify unauthorized attempts to upload or change information, or otherwise cause damage.

5. Except for authorized law enforcement investigation and to maintain required correspondence files, no other attempts are made to identify individual users or their usage habits. Raw data logs are used to simply determine how many users are accessing the site, which pages are the most popular, and, from time to time, from which top level domain users are coming. This data is scheduled for regular destruction in accordance with National Archives and Records Administration guidelines.

External Link Disclaimer

The appearance of external hyperlinks does not constitute endorsement by the United States Department of Defense, the United States Department of the Navy or [command name] of the linked web sites, or the information, products or services contained therein. For other than authorized activities such as military exchanges and Morale, Welfare and Recreation (MWR) sites, the United States Department of Defense, the Department of the Navy or U.S. Navy Meteorology and Oceanography Command do not exercise any editorial control over the information you may find at these locations. Such links are provided consistent with the stated purpose of this DoD web site.

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