Rapid Ground Shaking 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.
Max Est. MMI
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Estimated Shaking at Nearby Cities
Full details →
| MMI | Nearby Cities | |||
|---|---|---|---|---|
| No intensity data available yet. | ||||
Recent Earthquakes 6
View all events →| Earthquake Location | Max Est. MMI | |
|---|---|---|
|
1 km SE of Boulder Creek, CA
2026-04-02T08:41:25.520000Z M4.6 • 10 km deep |
V
Moderate Bonny Doon |
Details → |
|
26 km WNW of Ludlow, CA
2026-04-01T16:30:47.910000Z M3.9 • 2 km deep |
II
Weak Barstow |
Details → |
|
26 km WNW of Ludlow, CA
2026-03-27T22:13:14.860000Z M4.1 • 1 km deep |
II
Weak Barstow |
Details → |
|
18 km NE of Upper Lake, CA
2026-03-26T17:24:54.900000Z M3.7 • 7 km deep |
III
Weak Upper Lake |
Details → |
|
27 km W of Petrolia, CA
2026-03-17T12:56:18.200000Z M3.7 • 20 km deep |
II
Weak Ferndale |
Details → |
|
73 km NE of Tonopah, Nevada
2026-03-14T15:06:52.091000Z M3.5 • 8 km deep |
I
Not felt Eureka |
Details → |
MMI values on this site are Instrumental Intensity — derived from recorded ground motion via USGS ShakeMap.