USGSAugust 29, 2026
M4.7 earthquake, 85 km W of Petrolia, CA
A magnitude 4.7 earthquake was recorded 85 km W of Petrolia, CA at a depth of 10 km, according to the U.S. Geological Survey. It was the 8,269th earthquake of magnitude 2.5 or more the USGS located in and near the U.S. in 2026, against 12,608 a year on average in 2016-2025.
M4.7
The notice
- Issued by
- U.S. Geological Survey
- Area
- 85 km W of Petrolia, CA
- State
- California
- Magnitude
- 4.7 (moment magnitude)
- Depth
- 10.0 km
- Time
- 2026-08-29 02:41:11 UTC
- Felt reports
- 102 people told the USGS they felt it (strongest reported intensity 3.8)
- Status
- reviewed by a seismologist
- Tsunami
- the event carries the USGS tsunami flag: check the Tsunami Warning Centers
- Epicentre
- 40.450, -125.272
- Official source
- U.S. Geological Survey: the notice at its source
Warnings and earthquakes in CaliforniaEarthquakes, August 2026
Source: U.S. Geological Survey: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.