Historic Catalog
Earthquakes that occurred before instrumental monitoring started.
The authoritative instrumental PNSN catalog dates back to 1969. You can search for events from 1969 to present using our catalog search.
One day we may migrate historical events into a searchable catalog and add the better constrained and notable events into our authoritative catalog. Until then, you can search for events older than 1969 in one of two catalogs via the links below: