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Caltech Quake Bot @caltechquake.bsky.social · 23/08/2026

M4.0 10km ENE of #CosoJunction, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ www.scsn.org/index.php/earthquakes/latest-earthquake-information/

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Caltech Quake Bot @caltechquake.bsky.social · 22/02/2026

Weekly 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

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Caltech Quake Bot @caltechquake.bsky.social · 01/02/2026

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

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Caltech Quake Bot @caltechquake.bsky.social · 25/01/2026

Weekly 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

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Caltech Quake Bot @caltechquake.bsky.social · 11/01/2026

Weekly 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

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Caltech Quake Bot @caltechquake.bsky.social · 06/01/2026

Welcoming 2026 with seismic insights from the SCSN in 2025! From the Julian M5.2 to 2% less M<2 eqs and 74% less M4+ eqs than 2024! (2024 had A LOT of M4+) Lots of shaking in #SoCal as usual, so check out #2025earthquakes #SeismicReview and visit the Earthquakes Tab on www.scsn.org for more info!

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Caltech Quake Bot @caltechquake.bsky.social · 23/11/2025

Weekly Earthquake Stats: 16 Nov 2025 - 22 Nov 2025. There were 249 events this week ranging from M 0.12 to 3.73. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 16/11/2025

Weekly Earthquake Stats: 09 Nov 2025 - 15 Nov 2025. There were 212 events this week ranging from M 0.12 to 2.94. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 09/11/2025

Weekly Earthquake Stats: 02 Nov 2025 - 08 Nov 2025. There were 215 events this week ranging from M 0.18 to 3.33. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 02/11/2025

Weekly Earthquake Stats: 26 Oct 2025 - 01 Nov 2025. There were 250 events this week ranging from M -0.20 to 3.85. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 26/10/2025

Weekly Earthquake Stats: 19 Oct 2025 - 25 Oct 2025. There were 229 events this week ranging from M 0.10 to 3.24. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 16/10/2025

What a #ShakeOut day! After a morning of drills and outreach, Allen (SCSN Manager), Jessie (EEW Scientist), and Zack (Seismic Analyst) joined partners at the City of LA EOC, making new connections and strengthening others across CA. Huge thanks to Margaret Vinci & team for such an impactful event!

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Caltech Quake Bot @caltechquake.bsky.social · 12/10/2025

Weekly Earthquake Stats: 05 Oct 2025 - 11 Oct 2025. There were 328 events this week ranging from M -0.34 to 3.47. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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Caltech Quake Bot @caltechquake.bsky.social · 10/10/2025

#FieldPhotoFriday With the weather cooling a bit, lets show at a site that is normally pretty hot, looking lush through years of field visits! This station near Murrieta is in a nursery so it's always got a good view of the city and greenery! I'm sure the crew likes the change.

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Caltech Quake Bot @caltechquake.bsky.social · 05/10/2025

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

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Caltech Quake Bot @caltechquake.bsky.social · 30/09/2025

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!

Center Scott Lydeen, Retired SCSN engineers and scientists

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Caltech Quake Bot @caltechquake.bsky.social · 28/09/2025

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

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Caltech Quake Bot @caltechquake.bsky.social · 29/07/2025

New paper alert! SeismoLab researcher Jessie Saunders with USGS colleague David Wald examined responses to the USGS “Did You Feel It?” (DYFI) survey and its companion earthquake early warning (EEW) questionnaire to assess ShakeAlert EEW system performance from alert recipients’ perspectives. 🧵

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Caltech Quake Bot @caltechquake.bsky.social · 27/07/2025

Weekly Earthquake Stats: 20 Jul 2025 - 26 Jul 2025. There were 362 events this week ranging from M 0.06 to 3.06. Check out our weekly playback map and visit www.scsn.org for detailed information. #earthquakes #seismology #SCSN #weeklystats @CaltechSeismo

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