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.
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Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
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The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
NCEI is currently moving its data and applications to the cloud. This upgrade may result in temporary data access delays. Please see main article link and Frequently Asked Questions for more information and resources.