# Earthquake swarm in SoCal - what's up?

**URL:** <https://boards.straightdope.com/t/earthquake-swarm-in-socal-whats-up/921931>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [October 1, 2020, 2:03am UTC](https://boards.straightdope.com/t/earthquake-swarm-in-socal-whats-up/921931 "2020-10-01T02:03:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nearwildheaven](https://avatars.discourse-cdn.com/v4/letter/n/90db22/32.png) [@nearwildheaven](https://boards.straightdope.com/u/nearwildheaven)\
**Post date:** [October 1, 2020, 2:03am UTC](https://boards.straightdope.com/t/earthquake-swarm-in-socal-whats-up/921931/1 "2020-10-01T02:03:04Z")

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Most of them are in the 2.5 - 3 range and in the Westmoreland/Imperial region. Are there any Dopers who live in that area?

In the meantime, a 6.4 happened within the past hour in Tonga.

I like this seismograph, which is in someone’s basement in Lincoln, NE.

[![](https://img.youtube.com/vi/gH045WGMTAI/maxresdefault.jpg "Last streamed January 3, 2021 (archived) - \*stream has moved - please see description\*") ](https://www.youtube.com/watch?v=gH045WGMTAI)

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**Author:** ![DorkVader](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@DorkVader](https://boards.straightdope.com/u/DorkVader)\
**Post date:** [October 1, 2020, 2:30am UTC](https://boards.straightdope.com/t/earthquake-swarm-in-socal-whats-up/921931/2 "2020-10-01T02:30:39Z")

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Well that was interesting in a way. I didn’t realize that the “vertical” lines running through the scroll were ticks made by the stylus at every minute. I guess I just always pictured a siesmograph drum as having those in spite of having seen images of siesmographs plenty of times.

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**Author:** ![Voyager](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/voyager/32/133_2.png) [@Voyager](https://boards.straightdope.com/u/Voyager)\
**Post date:** [October 1, 2020, 6:26am UTC](https://boards.straightdope.com/t/earthquake-swarm-in-socal-whats-up/921931/3 "2020-10-01T06:26:47Z")

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There were 3 earthquakes in the magnitude 3 range in Milpitas, just west and north of San Jose and south of where I live. We felt one, lots of people around here felt others. Nothing major yet, but it does make me nervous.