M5.5, Lake Almanor near Chester, California

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A 5.5 magnitude earthquake struck the east shore of Lake Almanor on Thursday at 4:19 p.m., with its epicenter located approximately 2 km south-southwest of East Shore. The earthquake occurred at a depth of 1.5 km and was felt in Butte County and surrounding areas. The U.S. Geological Survey confirmed the event and noted that there were some minor aftershocks following the initial quake.
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CHESTER — A 5.5 magnitude earthquake hit the east shore of Lake Almanor on Thursday and its impact was felt in Butte County and beyond.

The U.S. Geological Survey reported on its earthquake site that the earthquake was -1.5 km deep and shook at 4:19 p.m. The epicenter was located about 2 km south-southwest of East Shore on the lake.
https://www.chicoer.com/2023/05/11/earthquake-shakes-north-state/

https://earthquake.usgs.gov/earthqu...20.94368&listOnlyShown=true&baseLayer=terrain

https://earthquake.usgs.gov/earthquakes/eventpage/nc73886731/executive

M 5.5 - 4km SW of East Shore, CA​

  • 2023-05-11 23:19:41 (UTC)
  • 40.216°N 121.109°W
  • -1.5 km depth (1.5 km above mean sea level)
Some small aftershocks as well.
 

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Thread 'Mag 7.6 - 73 km ENE of Misawa, Japan, tsunami warning issued'

M 7.6 - 73 km ENE of Misawa, Japan https://earthquake.usgs.gov/earthquakes/eventpage/us6000rtdt/executive 2025-12-08 14:15:11 (UTC) 40.960°N 142.185°E 53.1 km depth It was however fairly deep (53.1 km depth) as compared to the Great Tohoku earthquake in which the sea floor was displaced. I don't believe a tsunami would be significant. https://earthquake.usgs.gov/earthquakes/eventpage/us6000rtdt/region-info
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