Tennessee Weather Forum

Geology => Geology => Topic started by: Charles L. on July 04, 2019, 12:55:40 PM

Title: 7.1 Earthquake near San Bernardino CA, 6.4 Earthquake Near Ridgecrest, CA
Post by: Charles L. on July 04, 2019, 12:55:40 PM
CNN reporting that a hotel in Ridgecrest did suffer some damage.
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: mamMATTus on July 04, 2019, 01:29:56 PM
I've heard from all of my friends in the LA area and they are good besides a few things getting knocked off the walls. All of them said the same...long and rolling. That's the most destructive quake type. Had this been centered closer to LA, we'd absolutely have a natural disaster in SoCal. I'm a firm believer a major bullet was dodged today.
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: Charles L. on July 04, 2019, 01:37:03 PM
Only ~ 5 miles deep too, so no wonder LA felt some serious shaking too even though they are 150 miles away from the epicenter.
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: mamMATTus on July 04, 2019, 02:39:21 PM
[attachimg=1]Sizable and frequent aftershocks. This could go on for a while. Also, I’m going to guess with that kind of energy release that surrounding faults have been/will be affected. That’s worrisome.

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Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: mamMATTus on July 05, 2019, 10:46:53 PM
Another 6.9. Not sure if that counts as an aftershock or not
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: Thundersnow on July 05, 2019, 10:52:50 PM
Another 6.9. Not sure if that counts as an aftershock or not

Just seeing this- some reports 6.9 some 7.1... not sure what’s official yet.

Seeing that it is stronger than yesterday’s quake... that almost makes yesterday’s a foreshock...
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: harlequin on July 06, 2019, 02:24:22 AM
Mostly being reported as 7.1, but we'll see what they settle on.

We could not feel it in San Francisco, but everyone in LA that I know felt this one and were a little worried.
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: Thundersnow on July 06, 2019, 06:12:30 AM
From seismologist Dr. Lucy Jones:

Quote
So the M6.4 was a foreshock.  This was a M7.1 on the same fault as has been producing the Searles Valley sequence. This is part of the same sequence
Title: Re: 6.4 Earthquake Near Ridgecrest, CA
Post by: Charles L. on July 06, 2019, 07:06:53 AM
Wow, just waking up to this news. Now we have to hope this was the main quake and there won’t be another one even stronger.
Title: 6.4 Earthquake Near Ridgecrest, CA
Post by: Thundersnow on July 06, 2019, 09:33:51 AM
For perspective, last night’s quake was five times bigger than the original shock. Every whole number level on the Richter scale goes up by a factor of 10 in intensity.

I was reading something a while back where someone was challenging the whole idea that there’s a quake and then aftershocks. Basically, there’s simply a series of quakes of different magnitudes... not that a main event necessarily causes the aftershocks. There’s always going to be the biggest shock in the series. That’s commonly the initial shock in a series, but not always.
Title: Re: 7.1 Earthquake near San Bernardino CA, 6.4 Earthquake Near Ridgecrest, CA
Post by: RobD on July 13, 2019, 08:43:49 PM
Our oldest moved to the L.A. area in February so we flew out to visit on 7/4. She picked us up and 2 hours after touching down, as we were having brunch, we all experienced our first earthquake. Then on 7/5 as we were hanging out at Ballast Point brewery we experienced our second!

Honestly, I don't know if I would have noticed the first if others hadn't pointed it out. The second one lasted much longer! And in both cases we were in the Long Beach area.