NAPA (CBS SF) – The USGS has recorded dozens of minor aftershocks in the minutes following a magnitude 6.0 earthquake in Napa County overnight, and seismologists say more should be expected in the coming days.

The larger quake struck at 3:20 a.m., and by 7 a.m. some 60 smaller earthquakes had been recorded in the North Bay.

The quakes, ranging in size from magnitude 0.6 to 3.6, were recorded primarily in American Canyon, the Geysers and Napa. Many North Bay residents reported feeling the largest of those aftershocks, which struck at 5:47 a.m.

“Strong side to side motion woke me up.5:47 mild aftershock here in Sonoma,” Facebook user Darla Anderson posted on the CBS SF Facebook page.

The USGS tells KCBS that there is roughly a 50-50 chance of a magnitude 5.0 or larger earthquake hitting in the next five days.

Get a complete list of the aftershocks here.

EARTHQUAKE CENTER: Complete Coverage Of The American Canyon Earthquake

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