Northern California: Possible Large Earthquake Imminent

***

The East Bay area has been having earthquake swarms for the last 5 days.

While swarms dont generally mean a large fracture is imminent, sometimes they can.

This is possibly one of those cases.

5 nights ago there were 4 quakes all centered around the same half mile road. According to USGS they were all beteeen 2.5 and 3.0.

Each and every night since then there have been

2 quakes
3 quakes
3 quakes

And last night there were 4 again, and they started to creep into the low 3.0 mags.

Just when I woke up at 12:25pm pst, i immediately thought, earthquake.

Within 5 seconds, we had the strongest one yet, a 3.6 that lasted about 8 seconds, followed by a 2.8, thirty seconds later.

Again these were centered along this same road.


Considering a few things, like the periodicity for large quakes on the faultlines in this area (Calaveras and Diablo Thrust) which are estimated to be able to produce upwards of a 7.2, combined with what appears to be an upward trend in the freqeuncy and magnitude of these quakes...

Im not an expert, but my father and I spoke and we both think there is a significant possibility of a 6 to 7 magnitude quake centered in the East Bay near Mt. Diablo this weekend. The thing that confuses me is how much these quakes seem to almost resemble volcanic activity.

Take it for what its worth if you live in N. Cal. Id suggest being prepped with food and water anyway.

Im not saying 100% but it is significant enough to elicit concern; especially for those who live on top of the epicenter area (fml 😂).

a reply to: CreationBro

I'm there, now. Over a lifetime, I have learned that as long as the ground is moving a little bit, little bit, thats a good thing. Eases the pressure, keeps big ones from building up.

Also, if there was bigger quakes, waiting to be set off, little quakes would be the trigger.

Problem here is most earthquake faults in Ca are the strike slip kind, not subduction kind (like in Japan and Indonesia). Slipping sideways produces smaller quakes than plunging under, if that makes any sense.

Imminent imminent?

Or like, within a hundred years imminent??

a reply to: Jefferton

To an ancient, very imminent

As long that guy on Live Leak, from New Zealand if i remember right, doesn´t say a large earthquake is coming, there will be no large earthquake.

a reply to: intrptr

Thats often the consensus, however a lot of massive quakes have foreshocks like this for days, including the 1989 loma prieta quake.

Unfortunately, the Mt. Diablo Thrust fault is not a strike slip and it looks like this may be related to that fault line.

Hopefully it passes quietly. If not, well, i hope for the best.

a reply to: CreationBro

Thats often the consensus, however a lot of massive quakes have foreshocks like this for days, including the 1989 loma prieta quake.

I lived thru that. Loma Prieta is an ancient volcano, supposedly extinct. Thats a little different.

Got a link for the 1989 Loma Prieta Foreshocks?

I see...

The M5.3 June 1988 and the M5.4 August 1989 events (local magnitude) also occurred on previously unknown oblique reverse faults and were within 3 mi (4.8 km) of the M6.9 Loma Prieta mainshock epicenter, near the intersection of the San Andreas and Sargent faults. Total displacement for these shocks was relatively small (approximately 4 in (100 mm) of strike-slip and substantially less reverse-slip) and although they occurred on separate faults and well before the mainshock, a group of seismologists considered these to be foreshocks due to their location in space and time relative to the main event.

Thats also a little different considering the variables. Not a quake 'swarm' in that sense, nor all in one place.

wiki

a reply to: intrptr

I hated that earthquake, I worked next door to the Lab and everyone thought the Lab had blown.

This little swarm almost looks like it is under a housing area. There is something big coming to the West coast, but I am not sure this is it. I seriously think it will happen closer to Seattle.

WAIT...Everyone just settle down.

California has this all under control. Any possible earthquake has been prevented.
The Governor has just declared the entire state to be an earthquake-free zone.

a reply to: CreationBro

And Q predicted it!

USGS Nor Cal Shake Map

I'm totally prepared, but what quakes are you referring to the USGS shake map has but two listed recently

originally posted by: AnonymousCitizen
WAIT...Everyone just settle down.

California has this all under control. Any possible earthquake has been prevented.
The Governor has just declared the entire state to be an earthquake-free zone.

Phew thank God. Now they can pass that anti stupidity legislation and keep Red State politicos out as well. Woot Woot life will be super duper great. Bad news though the banning ignorance is hung up in the legislature.

The whole pacific rim has been very active in recent years. Just about every major area has gone off except California. With pretty much the whole rim relaxing the remaining amount of stress on the California part has to be significant.

I had marked a few sites to look at not too long ago but unfortunately I never got back to them. I do recall, however, that the west coast is overdue for a major quake, though that isn't news to the people here. You guys are on top of things as usual...

I wonder if this will tie in with the 200+ swarm of quakes in Yellowstone since Feb. 8th. Either one letting go would be bad, but both together is shaky quaky doom porn at its best.

originally posted by: AnonymousCitizen
WAIT...Everyone just settle down.

California has this all under control. Any possible earthquake has been prevented.
The Governor has just declared the entire state to be an earthquake-free zone.

Since 1989, he's been right.

Could last another week, decade, century...

a reply to: CreationBro

People in the west coast had more major earthquakes in movies than
real life.

good

originally posted by: Trueman
People in the west coast had more major earthquakes in movies than real life.

It has been surprisingly quiet in Southern California for some time now. Which is either a good sign or a bad one, depending who you listen to. I remember the Northridge Quake. That was a boomer!

originally posted by: AnonymousCitizen
WAIT...Everyone just settle down.

California has this all under control. Any possible earthquake has been prevented.
The Governor has just declared the entire state to be an earthquake-free zone.

Oh, whew. I was worried. I feel so safe now. The government will protect me!

a reply to: CreationBro
Sorry to say this but science has not progressed enough to predict earthquakes, we do have good stats to say the time frame between the big ones hit....