4 km N of Rancho Cucamonga, CA

Event facts

Magnitude

1.2 (ml) · Minor

Time (UTC)

1 Oct 2026, 15:19 UTC6 hours ago

Last updated by USGS

1 Oct 2026, 17:28 UTC

Depth

8.5 km · Shallow

Coordinates

34.157° N, 117.575° W

USGS tsunami flag

Not setSet for large events in oceanic regions; it does not mean a tsunami occurred. Official warnings: tsunami.gov.

Felt reports

None reported

USGS significance

21

Review status

Reviewed by a seismologist

USGS event ID

ci41341671