USGS Logs 31 Quakes in 24 Hours as M3.7 Hits Nevada and Puerto Rico
The latest map highlights routine low‑magnitude activity concentrated in active belts with no significant damage reported.
Overview
- USGS data show 31 earthquakes of magnitude greater than 2.5 across North America and the Caribbean in the last 24 hours as of October 7.
- Eight events occurred in the continental United States, led by a magnitude 3.7 about 75 kilometers northeast of Tonopah, Nevada at 09:14 UTC.
- A cluster near Guánica, Puerto Rico included a magnitude 3.7 at 02:01 UTC alongside several smaller shocks in the same area.
- Alaska and California continue to record the most frequent U.S. earthquakes due to Pacific–North American plate interactions and faults such as the San Andreas.
- Most recorded events were small and not widely felt, reinforcing the emphasis on ongoing monitoring and basic preparedness rather than emergency alerts.