Four recent earthquakes in the Santa Barbara
Channel would - on their own - not be a big deal. Together, they could rattle some nerves.
Two were off Carpinteria. Two were off Isla Vista.
They were considered small, with a magnitude range from 2.3 to 3.1.
Some were felt on shore and residents reported feeling their homes shake or hear windows rattle.
The swarm of quakes can sometimes be part of a pattern in the offshore zone where there are many fault lines.