Two quakes struck mid-Saturday measuring a 4.9 and 4.8 in preliminary reports from the U.S. Geological Survey.
The first quake, originally measured by the USGS as a preliminary 5.3, happened at 10:30 a.m. Saturday. The epicenter was located about 16 miles WSW from Calexico and 17 miles WSW from Mexicali.
The second quake, measured a 4.8 by the USGS struck at 10:33 a.m. Saturday. The quake was centered 14 miles southeast from Ocotillo and 18 miles southwest from El Centro.
A third quake, measuring 3.6, followed at around 11 a.m.
San Diego's Twitterati were busy after news of the quakes. While some said they didn't feel the temblors, others posted saying they felt the quakes.
According to @breezyskies, "Felt these but thought it was Camp Pendleton." The movement was brief according to @nelstar04 who posted "one was really strong but lasted just a few seconds."
One of our followers, @staceyAG, posted "Yup felt them!!! scared me AGAIN!! waaaa..."
NBCSanDiego contributor Marianne Kushi sent this update via Twitter, "OMG. What a jolt. Cockatoo next door still squawking. Aftershock. Whew what a jolt."
San Diego fire agencies report no damage caused by either quake.
The quakes struck in the same area as the 7.2 quake that caused damage in Calexico and El Centro on April 4.