Earthquake USA: 125 Years of Shaking

M5.0+ · Continental US · Real USGS Catalog · includes Cold War nuclear test detonations (toggle below)
1900
Current Year
1900s
1900
Year
Source: USGS Earthquake Catalog (ComCat/ANSS) · M5.0+, continental US, 1900-2024, real public data (913 events: 775 natural earthquakes, 137 underground nuclear test detonations recorded seismically at the Nevada Test Site, 1 mine collapse) · Catalog completeness improves substantially after ~1960s seismograph network expansion — earlier decades likely undercount moderate quakes relative to recent decades.