An official website of the United States government
Here's how you know
Official websites use .mil
website belongs to an official U.S. Department of Defense organization in the United States.
Secure .mil websites use HTTPS
means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.
Skip to main content (Press Enter).
Mission & Vision
Naval Oceanographic Office
Fleet Numerical Meteorology & Oceanography Center
United States Naval Observatory
News from the Naval Observatory
Earth Orientation Department
USNO Earth Orientation Products
Contents of Bulletin A
USNO GPS Products
GPS User Information
USNO VLBI-based Products
VLBI Correlator Data
VLBI-based Earth Orientation Parameters (EOP)
Earth Orientation Information Center
General Information about Earth Orientation
Frequently Asked Questions About Earth Orientation
What Is Earth Orientation?
What Is Polar Motion?
What does the Earth rotation coordinate measure?
What is the Celestial Pole Offset?
What is a Leap Second?
How do we measure Earth Orientation?
What causes variations in the Earth's orientation?
Who uses Earth orientation information?
Publications About Earth Orientation Products
Earth Orientation Software
Precise Time Department
The USNO Master Clock
The USNO Master Clock
Time Dissemination at the USNO
USNO Alternate Master Clock (AMC)
Cesium Atomic Clocks
Hydrogen Masers at the USNO
Rubidium Fountain Clocks
USNO Time Scales
International Time Scales and the BIPM
Definitions of Systems of Time
Global Positioning System
Global Positioning System Overview
USNO GPS Data Categories Explanation
CGGTTS Data Format
USNO GPS Time Transfer
GPS Information: SA, DGPS, Leap Seconds, etc.
GPS Week Number Rollover
GPS Timing Data and Information
USNO Format Explanation
USNO Computer Display Clocks
Two-Way Satellite Time Transfer (TWSTT)
Network Time Protocol (NTP)
US Eastern Time Zone NTP Servers
US Mountain Time Zone Servers
DoD Customer Servers
Astronomical Applications Department
Celestial Reference Frame Department
Senior Enlisted Advisor
Naval Oceanography Operations Command
Fleet Weather Center - Norfolk
Fleet Weather Center - San Diego
Joint Typhoon Warning Center
Public Use of Limitations
Naval Meteorology and Oceanography Command
Commander Shelley Caplan
Executive Officer, Fleet Weather Center San Diego
03 June 2022
Commander Caplan was born and raised in southern California. She attended Old Dominion University where she graduated with Bachelor of Science in Geology. Ensign Caplan received a commission through Officer Candidate School in 2000 and was later selected for lateral transfer to the Meteorology and Oceanography (METOC) Community.
Her first METOC assignment was the Naval Atlantic Meteorology and Oceanography Center in Norfolk, Virginia, where she served as the Regional Officer, Forecast Duty Officer, and Command Duty Officer. During this tour, she volunteered to support Operation Iraqi Freedom II by deploying aboard USS BAATAN (LHD 5) as the assistant METOC Officer. After this short deployment, she returned to Old Dominion University part-time where she earned a Certificate in Geographic Information Systems.
From 2005 to 2008, LT Caplan was assigned to the Naval Postgraduate School (NPS) in Monterey, California, where she earned a Masters of Science in Physical Oceanography and Meteorology and completed Naval War College JPME level I. Upon graduation, she volunteered for duty as the Chief Staff Officer and METOC Officer of Mine Countermeasures Division THREE ONE staff. During this tour, LT Caplan was highly involved in the stand-up of the Joint Command Task Force FIVE TWO and became the first METOC officer of the newly established MCM taskforce. She then transferred to Fleet Numerical Meteorology and Oceanography Center in Monterey, California, where she served as the Fleet Liaison and GIS Program Manager. From 2010 to 2012 she served as the METOC officer and Officer of the Deck aboard USS Ronald Reagan (CVN 76) and deployed in support of RIMPAC and Operation Tomodachi. From 2012 to 2015 she was assigned to Fleet Survey Team as Plans N5 and briefly XO where she earned a Masters of Science in Hydrography from the University of Southern Mississippi, and subsequently deployed to Greece, Guatemala, Grenada, and Saint Vincent and the Grenadines for cooperative hydrographic surveys. She was then assigned to Commander Naval Meteorology Oceanography Command, Stennis Space Center, Mississippi, from 2015 to 2018 where she served as Assistant Chief of Staff N1 and Future Plans N51. In early 2018, CDR Caplan completed Joint Forces Staff College JPME level II in Norfolk, VA. Most recently, she completed a tour at the Naval War College in Newport, RI, where she taught Joint Military Operations.
Her personal awards include Navy Meritorious Service Medal, Navy Commendation Medal, Navy Achievement Medal, and other unit and service awards earned alongside her shipmates.
Fleet Weather Center San Diego
DoD Accessibility/Section 508
No Fear Act
Plain Writing Act
Veterans Crisis Line
DoD Safe Helpline
Commander, Naval Meteorology and Oceanography Command | 1100 Balch Blvd. | Stennis Space Center, Mississippi 39529
Official U.S. Navy Website