The 5.2 magnitude quake struck at 1:08 p.m. Eastern time Monday, April 14, with its epicenter in San Diego County, about 2.5 miles south of the town of Julian, according to the United States Geological Survey.
At least seven aftershocks were felt after the initial quake.
It is not yet known if there are any reports of injuries or damage.
A quake with a magnitude between 5.0 and 5.9 "can cause damage of varying severity to poorly constructed buildings," according to the Richter scale, which puts that range in the "moderate" category, saying there is "zero to slight damage to all other buildings. Felt by everyone."
Quakes with magnitudes of 6.0 to 6.9 are classified as "strong," with 7.0 to 7.9 "major."
This is a developing story. Check back to Daily Voice for updates.
Click here to follow Daily Voice North Salem and receive free news updates.