Within an hour Tuesday morning, small earthquakes shook the entire South Bay region three separate times.
The first, rated at 2.7 by the U.S. Geological Survey, came at 8:16 a.m. A second, rated at 3.0 hit shortly after, at 8:30 a.m.
The third, the largest at 3.3 magnitude, rumbled through at 9:02 a.m.
All three quakes were all centered approximately 15 miles to the northeast of the West Valley, near Milpitas.
BART said it would run trains at reduced speeds to complete track inspections, causing short delays.
To see a full USGS map of earthquakes, click here.