SAN DIEGO COUNTY - An earthquake with a preliminary magnitude of 3.3 shook eastern San Diego County, and was felt as far away as Riverside today, Sun., Feb. 17.

"We feel them out here all the time, but not like this one," said Cheryl Gillott, a state parks worker in Ocotillo Wells. "It was pretty big."

The 9:04 a.m. temblor was centered about 16 miles east-southeast of Julian, or 16 miles due south of Borrego Springs. That spot would be in the isolated desert mountains about 75 miles southeast of downtown Riverside.

Persons scattered around eastern San Diego County reported feeling shaking from the quake, which was centered at a depth of about 3 miles below the surface. It was also reportedly felt in the cities of San Diego and Riverside.

Gillott, an employee at the Ocotillo Wells Advertisement

[ Metalography ] State Vehicular Recreation Area Discovery Center, described the quake as having a rolling, as opposed to jolting, motion.

Automated seismographs and computers originally calculated the quake to be magnitude 3.3, but the data was reviewed by seismologists and the magnitude was changed to 3.4.

(previous version)

(Wire Service) - An earthquake with a preliminary magnitude of 3.3 shook East County today.

The 9:04 a.m. temblor was centered about 16 miles east-southeast of Julian, or 16 miles due south of Borrego Springs.

That spot would be in the isolated desert mountains about 51 miles east-northeast of downtown San Diego.

Persons scattered around East County reported feeling shaking from the quake, which was centered at a depth of about 3 miles below the surface.

The quake data was generated by automated seismographs and computers and had not immediately been reviewed by seismologists.