The United States Geological Survey downgraded the magnitude of an early morning earthquake that rattled the Bay Area on Wednesday to 3.4 from 3.7.
The quake on the Hayward Fault was centered near the junction of state Highway 24 and 13 in Oakland at 4:42 a.m.
The USGS received reports from people saying that they felt the quake in Santa Cruz, to the south, and Vacaville, to the north.
Two minor aftershocks of 1.9 at 4:45 a.m. and 2.0 at 4:48 a.m. were also recorded.
BART delayed trains across its system so maintenace workers could inspect tracks after the temblor, according to transit officials.
