M5.5, Lake Almanor near Chester, California

In summary, a 5.5 magnitude earthquake hit the east shore of Lake Almanor on Thursday, with its epicenter located 2 km south-southwest of East Shore and a depth of -1.5 km. The impact was felt in Butte County and beyond, and there were also some small aftershocks reported.
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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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What does "M5.5" indicate in the context of the Lake Almanor event near Chester, California?

The "M5.5" refers to the magnitude of the seismic event, measuring 5.5 on the Richter scale. This indicates a moderate earthquake, which can cause damage to buildings and structures, especially near the epicenter.

Where exactly did the earthquake occur near Lake Almanor?

The earthquake occurred near Lake Almanor, close to the town of Chester, California. The specific location details such as latitude and longitude might vary slightly in different reports, but it generally refers to the area in the vicinity of Lake Almanor.

What was the depth of the earthquake near Lake Almanor?

The depth of the earthquake can significantly affect how it is felt on the surface. For the M5.5 earthquake near Lake Almanor, the depth would typically be reported in kilometers. Shallower earthquakes often feel stronger and can cause more surface damage compared to deeper ones.

Were there any aftershocks following the M5.5 earthquake near Lake Almanor?

It is common for aftershocks to follow an earthquake of this size. These aftershocks can vary in magnitude and frequency and can continue for days, weeks, or even months after the initial quake. Monitoring agencies like the US Geological Survey would provide updates on any significant aftershocks.

What should residents near Lake Almanor do in the event of such an earthquake?

Residents near Lake Almanor should follow earthquake safety protocols such as "Drop, Cover, and Hold On" during the shaking. It is also advisable to prepare an emergency kit, create a family emergency communication plan, and ensure that their property is structurally sound to withstand earthquakes. Local emergency services can provide specific guidance and updates relevant to the area.

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