#FieldPhotoFriday Most people don't think of islands when they think of SoCal, but we do have plenty just off shore, and they are one of the more crucial places for a seismic site due to how difficult it is to maintain equipment on the sea floor! Santa Barbara Island makes for a great workplace!
27.02.2026 18:00 — 👍 2 🔁 0 💬 0 📌 0
Meet Yuri Tamama, a Seismo Lab Grad Student who works on Lunar seismology! Yuri examines data collected by the Apollo missions to make sense of seismic sources and near-surface structure of the Moon! #SeismoLabSpotlight
26.02.2026 21:29 — 👍 7 🔁 1 💬 0 📌 0Weekly Earthquake Stats: 15 Feb 2026 - 21 Feb 2026. There were 231 events this week ranging from M 0.10 to 3.60. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo
22.02.2026 22:00 — 👍 1 🔁 0 💬 0 📌 0
#FieldPhotoFriday Sometimes flipping a switch is all it takes when trying to remedy a down station, if only the breaker that had flipped was local! The field crew stopped by this station near Jurupa Valley to diagnose and fix it, flipping the breaker and adjusting some cables is what did the trick!
20.02.2026 18:02 — 👍 3 🔁 1 💬 0 📌 0
M3.6 4km S of #Banning, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ buff.ly/CeMMmun
Check our Live Seismograms Feed on www.scsn.org now to see the waves as they cross our network in real time!
#FieldPhotoFriday Some stations really take a hike to reach! Our team recently trekked to a mountaintop site in Joshua Tree to replace a failed cell modem that had knocked it offline. After the climb, the data are flowing again. Great work, as usual! These pics are from an earlier install trip.
13.02.2026 18:01 — 👍 6 🔁 0 💬 0 📌 0
#EQHistory: 1971 M6.6 San Fernando. The event killed 65. In the aftermath Caltech seismologist Clarence Allen went to Sacramento with a message: geologists know where active faults are and we can prevent building on them. His testimony helped the passage of the Alquist-Priolo Act. buff.ly/Yzs6NPt
09.02.2026 19:53 — 👍 35 🔁 11 💬 1 📌 0Weekly Earthquake Stats: 01 Feb 2026 - 07 Feb 2026. There were 288 events this week ranging from M 0.03 to 3.31. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo
08.02.2026 21:00 — 👍 2 🔁 0 💬 0 📌 0
Today we celebrate 20 years of the USGS Earthquake Notification Service with a Dog Day at the office! Hot dogs, cake, and a visit from ENS creator, Stan Schwarz. Thanks to all who keep us informed! To learn more about ENS, check out this link: buff.ly/uJi5Dk0
07.02.2026 00:15 — 👍 20 🔁 6 💬 1 📌 0
#FieldPhotoFriday We share SCSN fieldwork and Seismo Lab research to highlight both the work that keeps SoCal’s seismic network running and the science that grows from it. What other field photos would you like to see in future posts from the team? Here’s a recent visit to a station near Thermal.
06.02.2026 18:03 — 👍 2 🔁 0 💬 0 📌 0
We’re thrilled to welcome planetary seismologist Philippe Lognonné to the Seismo Lab for a 3-month visit! As the lead of InSight’s SEIS instrument and a major voice in future lunar & farside seismic missions, he’s sharing today about seismology on other worlds.
InSight SEIS: buff.ly/NqebrIb
Weekly Earthquake Stats: 25 Jan 2026 - 31 Jan 2026. There were 428 events this week ranging from M -0.10 to 3.16. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo
01.02.2026 22:00 — 👍 1 🔁 0 💬 0 📌 0
#FieldPhotoFriday Recently, Field Techs Alberto and Daniel took the SCEDC team into the field for a site visit! It was a chance to step away from the computers and see where the seismic and station data they work with is created. SCEDC maintains the data; the field crew maintains the stations.
30.01.2026 18:01 — 👍 3 🔁 0 💬 0 📌 0
Calling all local high school sophomores and juniors!
Applications for the Caltech Earthquake Fellows open Feb 1. Get hands-on experience in seismic research and outreach with the Seismo Lab.!
Apply by Mar 31:
buff.ly/BAF9J5Z
#Preparedness #SeismoLab #USGS #Earthquakes #SoCal #Seismicity
28.01.2026 21:01 — 👍 2 🔁 0 💬 0 📌 0
It is always good to be prepared. Yesterday the Seismo Lab and USGS got together for a workshop to discuss how we will respond scientifically when major earthquakes happen in SoCal. From initial insights to temporary seismic node deployment, there is a lot to do before and after major shaking!
28.01.2026 21:01 — 👍 2 🔁 0 💬 1 📌 0Weekly Earthquake Stats: 18 Jan 2026 - 24 Jan 2026. There were 894 events this week ranging from M 0.02 to the M4.92 near Indio. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo
25.01.2026 22:00 — 👍 9 🔁 1 💬 0 📌 1
Sometimes #FieldPhotoFriday really is in a field! The Field crew recently went to this station near Playa del Rey to install a CalOES radio and antenna. The regular telemetry upgrades are crucial to keep our stations communicating with home base, just as crucial as the seismic equipment itself!
23.01.2026 18:03 — 👍 4 🔁 0 💬 1 📌 0
The SCSN & SCEDC want your feedback!
We’re modernizing our systems and looking for community input to help shape future data products/services. The survey is open to everyone in the research community, even if you’ve never used our data. It takes ~15 min and runs through March 1.
Meet Zack Newman, a Seismo Lab Staff Member who analyzes the earthquakes you feel and see on tv/online in SoCal, manages the social media and www.scsn.org for the Seismo Lab and SCSN, and made this post lol! #SeismoLabSpotlight
21.01.2026 17:01 — 👍 10 🔁 1 💬 0 📌 0Update Mw 4.9
20.01.2026 02:22 — 👍 1 🔁 1 💬 0 📌 0Did you feel tonight's M4.9 earthquake near Indio? The ShakeAlert system was activated, and alerts were sent to cell phones through apps as well as the WEA system. Provide feedback about your experience during the eq as well as with receiving the EEW system, please fill out a "DYFI" buff.ly/l09oH7t
20.01.2026 02:15 — 👍 4 🔁 2 💬 0 📌 1
M4.6 19km NNE of Indio, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ www.scsn.org/index.php/earthquakes/latest-earthquake-information/
20.01.2026 02:05 — 👍 3 🔁 2 💬 1 📌 0
One lasting legacy was the expansion of the Southern California Seismic Network, strengthening how we detect and share earthquake information today.
More on the event: buff.ly/YoDBzi3
#Northridge #Earthquake #SCSN
January 17 marks the 32nd anniversary of the 1994 Northridge Earthquake.
The M6.7 quake struck beneath the San Fernando Valley, producing some of the strongest urban ground shaking ever recorded in North America and driving major advances in seismic monitoring, building codes, and emergency response
Reaching our desert equipment can mean long hikes, rugged terrain, and wildlife, but their remote locations are key to capturing high-quality data. Fieldwork like this is a reminder that behind every dataset is time, effort, and a team willing to go the extra mile, literally!
16.01.2026 18:00 — 👍 5 🔁 0 💬 0 📌 0Weekly Earthquake Stats: 04 Jan 2026 - 10 Jan 2026. There were 247 events this week ranging from M 0.29 to 3.37. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo
11.01.2026 22:00 — 👍 2 🔁 1 💬 0 📌 0
169 years ago this week (Jan 9, 1857), the M7.9 Fort Tejon earthquake ruptured over 350 km (220 miles) of the San Andreas Fault.
Although named for Fort Tejon, historical reports suggest the rupture may have begun near Parkfield, where possible foreshocks were observed. buff.ly/cVPiaRZ
#FieldPhotoFriday is back! Cold mountain air, wide-open views, and one of our seismic stations high above the Banning area. Not a bad office/field location! Beautiful scenery and a great place to keep watch on Southern California’s seismic activity.
09.01.2026 18:02 — 👍 9 🔁 0 💬 0 📌 0
The SSA 2026 annual meeting is coming to Pasadena! Several researchers from the Caltech Seismo Lab and SCSN are co-convening sessions (#3, 12, 13, 22, 45, 49). We encourage you to take a look and consider submitting an abstract by Jan 13!
buff.ly/203ZkdB
