Weekly Earthquake Stats: 26 Jul 2026 - 01 Aug 2026. There were 309 events this week ranging from M 0.11 to 3.33. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

July EQ History: 7/21/1952 Kern County EQ, M7.5 - struck 23 mi south of Bakersfield on the White Wolf fault. It was the largest SoCal quake since 1857 and felt from Reno to San Diego. 12 killed, $50M+ damage. The fault was only ~30 mi long, surprisingly short. buff.ly/fCd2rEu

#FieldPhotoFriday This desert station got a visit back in May, before the summer heat really turned up the dial. That was good timing for the field crew, it’s projected to reach 104°F there today! But when the network needs attention, even the heat doesn’t always keep them away. #ShakeAlert #CalOES

Our thoughts are with everyone affected by the damaging earthquake in southern Japan, especially those who have lost loved ones or are awaiting news. Earthquake Insights provides more scientific context on the earthquake and the region: buff.ly/Ro88nlF

Southern Japan struck by deadly M6.8 earthquake

A reminder of the neighboring 2016 Kumamoto M7.0 earthquake

earthquakeinsights.substack.com

Weekly Earthquake Stats: 19 Jul 2026 - 25 Jul 2026. There were 332 events this week ranging from M -0.19 to 3.62. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

#FieldPhotoFriday In May, our field crew braved a windy day near Furnace Creek. They repaired a deteriorated GPS connection, GPS antenna, noisy sensor, and more. The work restored clock quality from 10% to 100%, keeping the station reliable and ready for future quakes! #ShakeAlert #CalOES

This week, members of the Seismo Lab joined the NASA Exploration Science Forum to share their research on lunar exploration. Seismo Lab Director Zhongwen Zhan presented work from Caltech and JPL, while Yuri Tamama shared her research on thermal moonquakes during the poster session. buff.ly/K6qaYBP

Life aboard a research ship still involves plenty of work on theses and papers. Downtime brought movies, games, a mess-hall coffee shop, ocean-assisted table tennis, and shared sunrises and sunsets. Read more: buff.ly/VVbCAol

Weekly Earthquake Stats: 14 Jul 2026 - 18 Jul 2026. There were 447 events this week ranging from M -0.63 to 4.32. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

The 5th year of Earthquake Fellows wraps up this week after another successful summer! Throughout the summer, Fellows conducted their own research projects related to ambient noise, seismic instrumentation, and even machine learning!

#FieldPhotoFriday With the heat upon us, we’re looking back at cooler fieldwork near Big Bear! These snowy pics are from a 2005 station visit. The crew will return soon to replace a datalogger causing daily reboots, though there sadly probably won’t be snow this time. #ShakeAlert #CalOES

On July 10, the EQ Fellows Program held their first Alumni Celebration, where students from different cohorts came to speak with the current Fellows but also celebrate program success from these last 5 years.

Last week, we hosted a #BICEPP meeting at Caltech. Margaret Vinci and Jessie Saunders guided local leaders through earthquake preparedness, early warning, operational uses for alerts, and a tour of our facilities. A great turnout and opportunity to build connections!

M4.1 18km WSW of #Johannesburg, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ www.scsn.org/index.php/earthquakes/latest-earthquake-information/

Latest Earthquake Information | SCSN

For data archive access visit SCEDC

scsn.org

Weekly Earthquake Stats: 05 Jul 2026 - 11 Jul 2026. There were 400 events this week ranging from M -0.33 to 3.22. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

M4.2 2km ESE of #FrazierPark, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ www.scsn.org

Latest Earthquake Information | SCSN

For data archive access visit SCEDC

scsn.org

This #FieldPhotoFriday we're back at Quakes Stadium from the 4th of July! A group of Seismo Lab members took equipment out, where they helped set up fireworks, tested CSN rapid deployment units, and deployed a datalogger to collect data during the live fireworks show, from within the firing area!

"Ha llegado el momento de desarrollar sistemas eficaces que utilicen automáticamente las alertas tempranas y activen mecanismos para proteger a las personas" Así es como Hiroo Kanamori, describe su respuesta a los recientes terremotos en Venezuela en esta entrevista. Lee el artículo:

El mayor experto en terremotos de Japón: "Son como un choque en cadena en una autopista"

Hiroo Kanamori, una leyenda viva de la sismología, cree que debemos responder más rápido y de forma automática; quizá detrás venga un tsunami. Su nueva investigación revela que el último gran…

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Weekly Earthquake Stats: 28 Jun 2026 - 04 Jul 2026. There were 350 events this week ranging from M -0.34 to 3.39. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

Missed our July 4 livestream? Watch the trimmed version: buff.ly/VGwRXnk Seismo Lab teamed up with Pyro Spectaculars to place a seismometer and cameras inside the firing zone, capturing both the fireworks display and the seismic signals generated by the aerial bursts.

Fourth of July Fireworks with Seismic data at Quakes Stadium 2026

Celebrate Independence Day with a unique view of the science behind the spectacle. We were live at LoanMart Field, Quakes Stadium in Rancho Cucamonga, CA showing the fireworks display and the effect…

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We're live! Watch fireworks from inside the firing zone and see the seismic signals they generate in real time. Cameras and instruments at LoanMart Field are capturing both the show in the sky and the motion recorded on a seismometer. buff.ly/8Erdher #FourthOfJuly #Fireworks #SCSN #Caltech

7/4/26 Fireworks at LoanMart Field Quakes Stadium

Celebrate Independence Day with a unique view of the science behind the spectacle.Watch live fireworks and the effect on a seismometer as shock waves from ae...

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Make sure to catch our live stream tonight at about 9pm! We've been out here setting up fireworks at Quakes Stadium, and getting the CSN rapid deployment units tested!

Fireworks are designed to be seen and heard, but did you know they can also be recorded by seismic instruments? Tune in later today as we livestream a 4th of July fireworks from inside the firing zone at LoanMart Field, alongside live seismometer data capturing the signals generated by the show!

#FieldPhotoFriday This week, our field team played detective on a station whose radio connection had gone dark. After a dusty drive to our Palmdale site and a quick reconfiguration, it was back online and ready to help power earthquake early warning! #ShakeAlert #CalOES

What does a fireworks show look like on a seismogram? July 4, we'll be livestreaming a fireworks display from inside the firing zone at LoanMart Field in Rancho Cucamonga, along with live seismic data showing the signals produced by the explosions!

Join us in welcoming Caltech's 10th President, Ray Jayawardhana!

Caltech@caltech.edu · last mo.

Today, Caltech and JPL welcome renowned astrophysicist, acclaimed author, and transformative leader, Ray Jayawardhana as the Institute’s tenth president! He brings a fierce commitment to building on Caltech’s legacy of discovery and exploration. Welcome to the frontier, RayJay! l1nq.com/uci46q8

Just like it takes only 30 people to have a 50-50 chance of a shared birthday, regions with a long history of earthquakes can have a multi-earthquake anniversary. For SoCal, it’s June 28 - 1966, 1991, and 1992.

#FieldPhotoFriday This station near Wheeler Springs recently got a visit after connection issues were traced to failing cell connectivity. Thanks to a quick fix by our field crew, it's back online and helping keep SoCal's EQ monitoring and early warning network resilient. #ShakeAlert #CalOES

Meet Jingchuan Wang, a Seismo Lab Post-Doc who works on Earthquake early warning, Distributed acoustic sensing, and Lunar seismology! One of Jingchaun's most meaningful accomplishments is having built his career in geophysics across different countries and research fields ! #SeismoLabSpotlight

#FieldPhotoFriday This week we have researchers on the high seas! Dr. Allen Husker and some @Caltech students are on the R/V Roger Revelle, operated by Scripps Institute of Oceanography! You can keep up on the expedition, which is running through the end of the month, here: buff.ly/WsipqPr