Note: The Hypoxia Watch Interactive Map has been updated for the 2026 season. See the map tutorial tab for more information. Email ncei.info@noaa.gov with questions.
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.