Caltech Quake Bot

Weekly Earthquake Stats: 28 Sep 2025 - 04 Oct 2025. There were 206 events this week ranging from M 0.17 to 3.18. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

#AutoEQ A magnitude 2.8 (MI) #earthquake has occurred 4 mi N of Big Bear City, CA at 06:20 PDT Oct 05, 2025 [2025-10-05 13:20 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41103031#executive

#AutoEQ A magnitude 3.7 (MI) #earthquake has occurred 4 mi N of Big Bear City, CA at 03:41 PDT Oct 05, 2025 [2025-10-05 10:41 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41102895#executive

#AutoEQ A magnitude 3.4 (MI) #earthquake has occurred 4 mi N of Big Bear City, CA at 02:51 PDT Oct 05, 2025 [2025-10-05 09:51 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41102847#executive

#AutoEQ A magnitude 3.5 (MI) #earthquake has occurred 4 mi N of Big Bear City, CA at 23:15 PDT Oct 04, 2025 [2025-10-05 06:15 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41102767#executive

#AutoEQ A magnitude 3.2 (MI) #earthquake has occurred 2 mi SE of Warner Springs, CA at 02:07 PDT Oct 03, 2025 [2025-10-03 09:07 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41102063#executive

Center Scott Lydeen, Retired SCSN engineers and scientists

Scott Lydeen's retirement luncheon.

Congratulations to longtime USGS field tech Scott Lydeen on his retirement! Scott spent decades maintaining & upgrading SCSN stations across SoCal, always innovating and working hand-in-hand with Caltech staff. His legacy lives on, not least at the seismic site named after him. Thank you, Scott!

#AutoEQ A magnitude 2.9 (MI) #earthquake has occurred 9 mi W of Johannesburg, CA at 11:24 PDT Sep 29, 2025 [2025-09-29 18:24 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41100695#executive

Weekly Earthquake Stats: 21 Sep 2025 - 27 Sep 2025. There were 304 events this week ranging from M -0.27 to 3.28. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

#AutoEQ A magnitude 3.2 (MI) #earthquake has occurred 49 mi SSW of Alberto Oviedo Mota, B.C., MX at 13:20 PDT Sep 25, 2025 [2025-09-25 20:20 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41097783#executive

When an earthquake hits SoCal, SCSN acts fast. We automatically post preliminary info for all local M2.75+ events, often within minutes. Reviewed updates are available at SCEDC.caltech.edu, www.SCSN.org, and USGS.gov. @caltechquake.bsky.social • @caltechseismo.bsky.social

#AutoEQ A magnitude 3.1 (MI) #earthquake has occurred 5 mi NNE of Coso Junction, CA at 18:15 PDT Sep 20, 2025 [2025-09-21 01:15 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci40447258#executive

#AutoEQ A magnitude 3.3 (MI) #earthquake has occurred 8 mi ESE of Puebla, B.C., MX at 17:34 PDT Sep 17, 2025 [2025-09-18 00:34 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci40441802#executive

When an earthquake hits SoCal, SCSN acts fast. We automatically post preliminary info for all local M2.75+ events, often within minutes. Reviewed updates are available at SCEDC.caltech.edu, www.SCSN.org, and USGS.gov. @caltechquake.bsky.social — @caltechseismo.bsky.social

#AutoEQ A magnitude 2.8 (MI) #earthquake has occurred 51 mi SSW of Alberto Oviedo Mota, B.C., MX at 01:13 PDT Sep 16, 2025 [2025-09-16 08:13 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41292224#executive

#AutoEQ A magnitude 2.9 (MI) #earthquake has occurred 7 mi NNW of Anza, CA at 00:08 PDT Sep 15, 2025 [2025-09-15 07:08 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41291600#executive

#AutoEQ A magnitude 3.6 (MI) #earthquake has occurred 9 mi NNE of Pine Valley, CA at 19:02 PDT Sep 13, 2025 [2025-09-14 02:02 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41291096#executive

#AutoEQ A magnitude 3.0 (MI) #earthquake has occurred 7 mi S of Olancha, CA at 02:36 PDT Sep 13, 2025 [2025-09-13 09:36 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41290552#executive

#AutoEQ A magnitude 2.9 (MI) #earthquake has occurred 10 mi WNW of Progreso, B.C., MX at 02:13 PDT Sep 13, 2025 [2025-09-13 09:13 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41290528#executive

#AutoEQ A magnitude 3.0 (MI) #earthquake has occurred 10 mi WNW of Progreso, B.C., MX at 01:02 PDT Sep 13, 2025 [2025-09-13 08:02 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41290448#executive

#AutoEQ A magnitude 3.6 (MI) #earthquake has occurred 13 mi NE of Maricopa, CA at 20:53 PDT Sep 10, 2025 [2025-09-11 03:53 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41288688#executive

#AutoEQ A magnitude 2.8 (MI) #earthquake has occurred 40 mi WSW of Rosarito, B.C., MX at 23:14 PDT Sep 09, 2025 [2025-09-10 06:14 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41287880#executive

#AutoEQ A magnitude 2.9 (MI) #earthquake has occurred 16 mi WNW of Ludlow, CA at 22:23 PDT Sep 09, 2025 [2025-09-10 05:23 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41287832#executive

#AutoEQ A magnitude 3.3 (MI) #earthquake has occurred 4 mi S of Pearblossom, CA at 22:49 PDT Sep 08, 2025 [2025-09-09 05:49 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41286768#executive

#AutoEQ A magnitude 2.8 (MI) #earthquake has occurred 0 mi SSW of Loma Linda, CA at 15:36 PDT Sep 07, 2025 [2025-09-07 22:36 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41285792#executive

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M3.5 10km N of #LaVerne, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ buff.ly/YnlVPfk And make sure if you felt it that you fill out the DYFI page on the USGS! buff.ly/wXQMPcu

#AutoEQ A magnitude 3.5 (MI) #earthquake has occurred 6 mi N of La Verne, CA at 17:11 PDT Sep 06, 2025 [2025-09-07 00:11 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41285224#executive

#AutoEQ A magnitude 2.8 (MI) #earthquake has occurred 4 mi N of Fontana, CA at 16:42 PDT Sep 05, 2025 [2025-09-05 23:42 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41284440#executive