Last updated October 4th, 2019
- 26 Feb 2018 10:44:41 PST, (33.483, -116.503), depth 12.6km, 18km ESE of Anza, California
- Aftershocks: so far (28 Feb 2018, 08:47AM PST) there have been 17 aftershocks recorded, the largest M1.9 (smallest M0.5). More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
- There were 25 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M1.5 (2018/02/23).
- Historical seismicity: since our records began in 1932 we’ve had 26 events of M4 or greater within 10km of today’s event, the largest was M5.6 (2005/06/12) and the most recent was M5.2 on 10 Jun 2016.
- Nearby faults: San Jacinto fault zone, Anza section (Clark fault) (0.2 km), San Jacinto fault zone, Anza section (1.6 km), San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (3.1 km), San Jacinto fault zone, Anza section (Buck Ridge fault) (3.1 km) and San Jacinto fault zone, Coyote Creek section (6.0 km).
- Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
- Visit our special reports page for further information on local notable earthquakes.
Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed. The closest stations represented in the feed below are CI.WWC and CI.HMT2 at 51.7km and 52.5km away from the epicenter respectively.