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M4.7 earthquake — 85 km W of Petrolia, CA · Was That A Quake?
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Light · PAGER green
M
4.7
85 km W of Petrolia, CA
3d 23h ago
Peak Ground Motion
MMI 3.4
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Aftershock Forecast
USGS publishes probabilistic aftershock forecasts for significant events.
View OAF forecast JSON →
Depth
10 km
Time (UTC)
02:41
Date
2026-08-29
Latitude
40.450°
Longitude
-125.272°
Source
USGS
View official report
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