A practical starting point
How to use Quakes99
Explore significant earthquakes by magnitude, depth, place and related USGS events.
Search Quakes99
Step 1
Define the plan
Choose the place, dates and practical constraints you need to check. Use the specific location or activity named on the site, rather than assuming that a nearby place has the same conditions.
Step 2
Open the matching records
Start with the available tools and pages below. Keep the record date and source context with any comparison, and separate discovery information from a confirmed booking.
Step 3
Check the details before committing
Confirm current opening times, availability, access and terms directly with the named source or operator. Use the question guides for the parts of the plan they actually cover.