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.
NCEI products and services are now available. Many data products continue to be updated as a result of the outage caused by Hurricane Helene. We apologize for any inconvenience.
Ionosonde data issues
Please note: Ionosonde data is currently unavailable to the public due to processing issues. We are working to resolve the issue as soon as possible, but data may be unavailable for several months. Data will be backfilled once it becomes available. We apologize for any inconvenience.