A series of five earthquakes struck off the Northern California coast on Wednesday morning, June 3, 2026, according to the USGS. - The strongest quake was a magnitude 5.7 about 100 miles west of Crescent City in Del Norte County.
- Four quakes were reported off Humboldt County, with the largest a magnitude 5.1 near Petrolia. - The quakes occurred along the Mendocino Fault Zone, starting at 3:53 a.m.
and continuing until 8:51 a.m. - No immediate reports of damage or injuries were available.