Two aftershocks from last weekend's Northern California earthquake, one measuring 3.9, rattled through the Bay Area early Tuesday, according to the US Geological Survey.

The USGS said a 3.9 magnitude aftershock struck near American Canyon at 5.33 a.m. It was the largest since the 6.0 quake hit in the same area, injuring dozens of people and causing extensive damage in nearby Napa and other Wine Country communities.

A second followed quickly, measuring 2.7 struck at 5:38 a.m.

There were no reports of any additional damage.

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Julian Conley listens during opening statements in his trial at Fulton County Superior Court in Atlanta on Wednesday, Sept. 17, 2025. The 25-year-old is accused of fatally shooting 8-year-old Secoriea Turner in July 2020. (Abbey Cutrer/AJC)

Credit: abbey.cutrer@ajc.com