An earthquake with a preliminary magnitude of 5.2 struck in the Julian area of San Diego County Monday, with the shaking felt through a large swath of Southern California, even as far north as West Los Angeles.
According to the U.S. Geological Survey, the quake struck at 10:08 a.m. about 2.5 miles south of Julian near the Pine Hills area. A ShakeAlert notice was sent to cell phones throughout much of Southern California, initially putting the magnitude of the quake at 6.0, but the USGS later downgraded it to 5.2.
There were no immediate reports of damage or injuries.
The Cal State Fullerton Police Department reported light shaking in that city, and its personnel were conducting safety checks on the campus as a precaution.
A series of aftershocks quickly hit in the same general area, most less than 3.0 magnitude, but one registered magnitude 3.5 near Borrego Springs.