Replay four decades of shaking across Idaho
11,779 seismic events (11,615 earthquakes, M ≥ 2.0, 1980 → today) from the USGS ComCat catalog, including the 1983 Borah Peak M6.9 and the 2020 Stanley M6.5 sequence. Drag the timeline to scrub through time, press play to animate, and drag a box on the map to filter to a region. Hover any dot for details; click to pin it.
Map + counties
Timeline replay
Gutenberg–Richter
Stanley aftershocks
Earthquake map
Drag to select a region · tap a quake
Selected quake
Live stats
Legend
Largest quakes in view
Timeline
Showing through
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Cumulative earthquakes over time
Gutenberg–Richter frequency
Spotlight: 2020 Stanley M6.5
Press Show sequence to highlight the 2020-03-31 Stanley M6.5 mainshock and its aftershocks on the map, and to plot the Omori aftershock decay.
Data & sources
- Earthquakes — U.S. Geological Survey, Earthquake Hazards Program, 2026, ANSS Comprehensive Earthquake Catalog (ComCat), M ≥ 2.0, bounding box lat 41.9–49.1, lon −117.3 to −110.9, 1980-01-01 → 2026-09-12. Public domain (U.S. Government work). earthquake.usgs.gov/earthquakes/search
- County & state boundaries — U.S. Census Bureau, TIGERweb (Generalized ACS 2023 State_County, 1:500,000). Public domain. tigerweb.geo.census.gov
- All data downloaded 2026-09-13 and embedded in this page — no network requests are made at runtime. Non-tectonic events (quarry blasts, explosions, rock bursts, mine collapses) are shown as hollow grey dots and excluded from seismic statistics.