Earthquakes near Thousand Oaks, 2017–2026

NOAA lists one tsunami from elsewhere that reached the coast within 60 mi of Thousand Oaks with deaths or a metre of water or more. The highest water NOAA records here was 1.2 m, on January 15, 2022.

• August 20, 2023Earthquake · M 5.17 km SE of Ojai, CAUSGS
• January 15, 2022Tsunami · 1.2 m hereTonga IslandsNOAA NCEI
• April 5, 2018Earthquake · M 5.331km SW of Santa Cruz Is. (E end), CAUSGS

• An event counts for Thousand Oaks when it began within 60 mi of its centre, or 120 mi for an earthquake of magnitude 7 or more. Damage can reach further.
• USGS counts are its ComCat catalogue’s earthquakes of magnitude 4.5 or more, aftershocks included.
• NOAA lists significant events only: earthquakes that killed, did about $1 million of damage, reached magnitude 7.5 or intensity X, or raised a tsunami, and eruptions and tsunamis by like measures. Magnitudes before 1900 are its estimates from written accounts.
• Deaths are NOAA’s total for each event, wherever people died, its tsunami and fires included. A tsunami counts the dead its runup records give for this place: NOAA’s total for a tsunami includes its source quake’s.
• A tsunami from elsewhere counts where one of its runups killed or rose a metre or more.
• Counted to October 19, 2026, as is the map. The last 30 days ask USGS again.

How the layers work, where their data comes from and what they can’t tell you: Earthquakes, live, The world through history