Seismic Intensity Estimates

Covering California, Nevada, Oregon, and northern Mexico.

The goal of the Intensity Lab is to change how we talk about earthquakes, moving past a single magnitude number to focus on site-specific seismic intensities, which can provide the essential information needed to make smart decisions after the shaking stops.

Our Vision →

Latest Event

37 km ENE of Nelson, Canada

—

M4.2 • 10 km deep • Full details →

Max Est. MMI

—

Estimated Shaking at Nearby Cities Full details →

MMI Description	Nearby Cities	Dist (km)	Dist (mi)
No intensity data available yet.

Recent Earthquakes 11

View all events →

Earthquake Location	Max MMI Description
37 km ENE of Nelson, Canada 2026-09-17T12:31:37.057000Z M4.2 • 10 km deep	—	Details →
24 km W of Petrolia, CA 2026-09-16T14:34:51.940000Z M3.7 • 20 km deep	Weak(II) Ferndale	Details →
20 km WSW of Gerlach, Nevada 2026-09-16T07:17:25.899000Z M4.1 • 7 km deep	Not felt(I) Janesville	Details →
26 km W of Petrolia, CA 2026-09-10T01:24:47.490000Z M3.7 • 19 km deep	Weak(II) Ferndale	Details →
24 km W of Petrolia, CA 2026-09-10T01:24:03.810000Z M3.7 • 20 km deep	Weak(II) Ferndale	Details →
35 km E of Hydesville, CA 2026-09-07T21:44:24.910000Z M3.7 • 24 km deep	Weak(II) Hayfork	Details →
20 km E of Castle Rock, Washington 2026-09-05T11:09:28.290000Z M3.9 • 17 km deep	Weak(II) Kalama	Details →
3 km ESE of Larkfield-Wikiup, CA 2026-09-03T17:33:27.360000Z M3.5 • 7 km deep	Weak(III) Santa Rosa	Details →
10 km ENE of Coso Junction, CA 2026-08-23T09:16:58.730000Z M3.6 • 3 km deep	Not felt(I) Searles Valley	Details →
11 km ENE of Coso Junction, CA 2026-08-23T08:01:15.780000Z M3.5 • 2 km deep	Not felt(I) Searles Valley	Details →
10 km ENE of Coso Junction, CA 2026-08-23T07:59:55.870000Z M3.8 • 2 km deep	Weak(II) Searles Valley	Details →

MMI values on this site are Instrumental Intensity — derived from recorded ground motion via USGS ShakeMap.

Site last deployed: September 21, 2026.