Caltech Seismological Laboratory

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Caltech Seismological Laboratory Caltech's Seismological Laboratory, an arm of the Division of Geological and Planetary Sciences (GPS), was established in 1921.

It has a distinguished history of leadership in science and serving the public interest.

10/18/2026

Weekly Earthquake Stats: 11 Oct 2026 - 17 Oct 2026. There were 206 events this week ranging from M -0.28 to 2.77. Check out our weekly playback map and visit www.scsn.org for detailed information.

from our station near Mountain Pass, on the road to Las Vegas. Our field crew visited to replace an aging battery and ...
10/16/2026

from our station near Mountain Pass, on the road to Las Vegas. Our field crew visited to replace an aging battery and keep out some unwanted rodent guests. The station is back in good shape, with sweeping views of the mine and surrounding desert. Great scenery for us, but time for the rodents to find a new place to stay.

This week, Caltech’s Division of Geological and Planetary Sciences (GPS) is celebrating 100 years as a division at ! Th...
10/15/2026

This week, Caltech’s Division of Geological and Planetary Sciences (GPS) is celebrating 100 years as a division at ! The Seismo Lab is proud to be a part of GPS and its long history of research and discovery.

Seismo Lab colleagues are contributing to the centennial program, with presentations and discussions on the research coming out of the lab. The schedule also features Seismo Lab voices in discussions on GPS’s history and future!

Congratulations to the GPS community on this milestone from 1926 to 2026, 100 years so far, and here’s to the next 100!

10/15/2026

Practice makes perfect! The students at Fremont High school have been well trained with regular drills to help them remain safe at school, and they can take those lessons home to their family! Great job everyone, and thank you having such an important event!

Reminder: At 10:15am take the opportunity to take part in the Great Drill! Remember to DROP COVER and HOLD ON! and for...
10/15/2026

Reminder: At 10:15am take the opportunity to take part in the Great Drill! Remember to DROP COVER and HOLD ON! and for more info visit Shakeout.org We just wrapped up the press conference here at John C. Fremont High and preparing for the drill.

It's incredible seeing how many different organizations contribute to keeping California quake ready, and ready to respo...
10/15/2026

It's incredible seeing how many different organizations contribute to keeping California quake ready, and ready to respond when a quake happens! Again, make sure to participate in the Drill at 10:15am

Today at 10:15am the Great California ShakeOut Drill is scheduled to help us all get prepared for when the ground shakes...
10/15/2026

Today at 10:15am the Great California ShakeOut Drill is scheduled to help us all get prepared for when the ground shakes! Make sure you have your location turned on and the MyShake app on your phone so you can participate too! We're here at the media event so check your local news for more info!

Weekly Earthquake Stats: 04 Oct 2026 - 10 Oct 2026. There were 333 events this week ranging from M 0.02 to 3.48. Check o...
10/11/2026

Weekly Earthquake Stats: 04 Oct 2026 - 10 Oct 2026. There were 333 events this week ranging from M 0.02 to 3.48. Check out our weekly playback map and visit www.scsn.org for detailed information.

Staying connected sometimes takes a little backup! Our San Sevaine station near the Cajon Pass shows why having two wa...
10/09/2026

Staying connected sometimes takes a little backup! Our San Sevaine station near the Cajon Pass shows why having two ways to send seismic data matters.
Connection issues had made the station too unreliable for use. Our field crew added a satellite connection alongside the existing cell modem, stabilizing the data feed so the station can reliably contribute to quake detection and early warning.

10/05/2026

Over the weekend we had our 2026 Annual Seismo Lab retreat!

The day included a visit to Travel Town, team challenges, an escape room, and dining! All nice chances to spend time with friends and colleagues outside the lab and see how our problem solving skills held up under some friendly competition!

Enjoy a few highlights from the day!

Address

1200 E California Boulevard
Pasadena, CA
91125

Telephone

+16263956919

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