A third earthquake registering over 3.0 within three days occurred at 3:49:11 p.m. (PDT) on May 19, 2009. Initial reports said the magnitude 4.1 quake occurred approximately 1 mile NE of Hawthorne, CA.USGS: Preliminary Earthquake Report (May 19, 2009) A few moments later, a 2.5 microearthquake occurred at 3:51:09 p.m. approximately 1 mile from El Segundo, CAUSGS: Magnitude 2.5 (May 19, 2009) The May 19, 2009 Los Angeles quakes were believed to be aftershocks from the 4.7 earthquake on May 17, 2009.SF Gate: Moderate Earthquake (May 19, 2009)

On the evening of Sunday, May 17, 2009, a earthquake occurred at 8:39:36 p.m. (PDT) in the Los Angeles area. Although the earthquake was originally reported to be a 5.0, it was later downgraded to a magnitude of 4.7 by a U.S. Geological Survey seismologist.

A 3.1 aftershock occurred a few minutes later, at approximately 8:45 p.m, the original incident. No major damage or injuries were reported.LA Times: 4.7 Quake Renews Worries (May 18, 2009)

• Date: May 17, 2009
• Time of event: 8:39 p.m.USGS.gov: PRELIMINARY EARTHQUAKE REPORT
• Occurred 8.4 miles below the surfaceLA Times: 4.7 Quake Renews Worries (May 18, 2009)
• Location: Along the Newport- Inglewood fault, approximately one mile from Lennox, CaliforniaUSGS.gov: Preliminary Earthquake Report (May 17, 2009)
• No major damage or reports of injuriesLos Angeles Times: 5.0 quake near LAX is felt across wide area (May 17, 2009)
• Fault line not immediately apparentLos Angeles Times: 5.0 quake near LAX is felt across wide area (May 17, 2009)
• Occurred near the Newport-Inglewood faultLos Angeles Times: 5.0 quake near LAX is felt across wide area (May 17, 2009)
• Depth: 13.5 kmUSGS.gov: PRELIMINARY EARTHQUAKE REPORT
• Estimated chance of significant aftershocks: 1/100USGS.gov: PRELIMINARY EARTHQUAKE REPORT
• Chance of resulting tsunami considered very lowNOAA.gov: Tsunami message from WCATWC
• Twitter users reported feeling earthquake tremors as far away as San DiegoTwitter: Bayleafs update

On September 30, 2008, just before 8 p.m., Los Angeles was jolted by a minor 3.0 earthquake, centered near El Segundo. The quake caused no damage. Just over two months earlier, on July 29th, a 5.4 magnitude earthquake jarred the Southern California region. The quake, which was felt as far away as Las Vegas, was centered near the affluent bedroom community of Chino Hills, less than 30 miles east of L.A. proper.

According to the U.S. Geological Survey, the following are the highest magnitude earthquakes whose epicenters have been located in the immediate Los Angeles region.U.S. Geological Survey: California Earthquake History 1769-Present

• 1994: 6.7 (Northridge)
• 1987: 5.8 (Whittier Narrows)
• 1971: 6.5 (San Fernando)
• 1941: 5.9 (Carpenteria)
• 1933: 6.3 (Long Beach)
• 1923: 6.0 (San Bernardino)
• 1858: 6.0 (San Bernardino)
• 1855: 6.0 (Los Angeles)
• 1769: 6.0 (Los Angeles)