Southern California 4.6 quake at 06:39UTC about 20 miles from here

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In summary, The USGS reported a 4.5 magnitude earthquake that occurred 3km WSW of South El Monte, CA at 06:38:46 (UTC) on 2020-09-19. The earthquake was 11 miles deep and was described as a sharp horizontal jolt with about 1 inch of peak movement. It was heavily damped and mostly died after 2 cycles, with very mild rolling for roughly 30-45 seconds. The speaker, who was in Long Beach, California on an alluvial plane in a 98 year old re-purposed church with concrete walls about 1 foot thick, reported no damage from the earthquake. They also mentioned that most people in the area did not
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Tom.G
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USGS reports it as 11 miles deep.

Was a sharp horizontal jolt with about 1 inch of peak movement, heavily damped, mostly died after 2 cycles. Very mild rolling for roughly 30-45 seconds. I'm in Long Beach, California on an alluvial plane, in a 98 year old re-purposed church. The walls are concrete about 1 foot thick. No damage from something that small and distant, most people didn't even bother to get outside and look around. Just another attention getter in The Rock & Roll State. :wink:

Tom
 
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Glad it wasn't bigger. My wife and I moved about 30 miles recently to get away from the worst zone of the Hayward Fault in NorCal. Stay safe.
 
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1. What caused the Southern California 4.6 quake?

The Southern California 4.6 quake was caused by sudden movement along a fault line in the Earth's crust, releasing built-up energy in the form of seismic waves.

2. How strong was the quake?

The quake measured 4.6 on the Richter scale, indicating a moderate level of intensity. However, the strength of a quake can vary depending on location and other factors.

3. Was anyone injured in the quake?

As of now, there have been no reports of injuries related to the Southern California 4.6 quake. However, it is always important to remain cautious and follow safety protocols during and after an earthquake.

4. Could this quake be a precursor to a larger earthquake?

It is impossible to predict with certainty if a larger earthquake will occur as a result of this quake. However, it is always important to be prepared for potential aftershocks and follow any evacuation or safety measures recommended by local authorities.

5. How does this quake compare to previous earthquakes in the area?

The Southern California 4.6 quake is considered a moderate earthquake and is not uncommon for the region. However, it is always important to stay informed and prepared for future seismic activity in the area.

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