California Quake

USGS ^

[Drago]

Just felt a quake here in the Fresno area...

[RightWhale]

That was Adak. 5.0 is nothing special. It is the full moon, though.

[capitan_refugio]

The largest earthquake ever felt in North America was likely the 1964 event in Alaska, which is related to an active subduction zone.

However, in the "lower 48" the largest earthquakes ever felt were likely to be the series of quakes realted to the New Mmadrid fault zone, between St. Louis and Memphis, which occured in 1811-1812. Three earthquakes (foreshocks, shocks, and/or aftershocks) each measuring between 8.0+/- and 8.5+/-. Accounts of the day suggest that overnight part of the Mississippi River flowed "backward" to fill a quake-related graben (depression) now known as Reelfoot Lake (northwestern Tenn). Earthquakes related features, formed in 1811-12, are still recognizable today.

[Lijahsbubbe]

http://www.freerepublic.com/focus/f-news/1229522/posts

Strange. Just read this earthquake prediction thread, then saw this thread.

[capitan_refugio]

The "shallow" hypocentral focus has been revosed to nearly 8km.

[MinuteGal]

Getting the tape out of the garage to criss-cross my windows for the Big One. Checking my water jugs and batteries. Cancelled my pedicure.

Oh wait.....it's in California? I'm in Florida.

Well, I'm sticking to the game plan. You can't be too rich or too ready.

Leni

[Lijahsbubbe]

Hi Oceanperch!

Looks like lunar action is kicking in! Full moon tonite.

[Lijahsbubbe]

Cancelled my pedicure.

You rich folks....

I had my pedicure done this morning, BY ME!

[capitan_refugio]

The is no established relationship between vocanic activity in Washington State and earthquakes in central California. There may be a relationship with the micro-swarm in the Mono Lake area, but that is about it.

The distance is so far between Mt. St. Helens and Parkfield, that the two sites can not "feel' the stresses caused by the other.

[Joe Hadenuf]

Yeah, next time I need to go back east on business, during winter, I'll just change careers and avoid it.

[missyme]

It has felt like earthquake weather here in San Diego, and remember last May when we were posting on the earthquake perdictions that were suppose to happen before Oct 1st?

[capitan_refugio]

You are referring to Dr. Lucy Jones, who is a younger colleague of Dr. Hutton at UCGS-Cal Tech. Dr. Jones married Prof. Egil Hauksson, formerly of USC, and they had kids.

[Lijahsbubbe]

Hi MM. Check out post 423. Is that what you're referring to?

[MineralMan]

"It has felt like earthquake weather here in San Diego, and remember last May when we were posting on the earthquake perdictions that were suppose to happen before Oct 1st?"

No such thing as earthquake weather, missyme. Weather has nothing to do with earthquakes, I'm afraid. They're caused by the forces of plate tectonics. California has earthquakes every day, most too small to feel. It has larger earthquakes quite frequently. Ones like this one today happen several times a year, in different parts of the state.

That said, I see you have posted photos of yourself on your profile page. Thanks!

[Fritzy]

I am glad to hear that the connection is nil... but the global activity is very interesting... from hurricanes that spawn tornados, Mount St. Helen and now Earthquakes... I thought a really big one would be focusing on the Sierras, not Parkfield.. perhaps, more to come. My son helped us move to Ocala from South Carolina, in between hurricanes, he left to go back to his practice in Seattle only to find the Mount acting up .. yesterday he flew to Fresno to check on an old patient... just got a call from him - still in Fresno.. he is hitting all the hot spots... I did not ask were he was going tomorrow...
Thanks for the info.. I keep reading .. you folks have the best of all news and updates... keep safe ...

[missyme]

Yes and there was one in May also!

[capitan_refugio]

The Long Valley caldera (of which Mammoth Mtn. is just one edge) explosively blew out about 750,000 years ago. It spread ash all over the western part of the North American continent. The area is geologically active, with minor ash and cinder-cone eruptions, as late as the 1700's.

I did some preliminary work on dating the ash layers for a proposed Masters thesis over 20 years ago. There remains in the area a relatively shallow, active magma chamber (not nearly as shallow as the one at Yellowstone!), which has been related to the earthquake swarms the occur there from time to time.

It is unlikely that there would be a Cascade-type eruption in the Long Valley caldera region. More likely would be a small, but impressive, cinder-cone eruption.

[missyme]

:-)
As a native Californian it just seems to me we have earthquakes when the weather is kinda balmy and warm, We have never had an earthquake when it's raining? or snowing...
Isn't Zorro cute kinda looks like a penguin...

[Canticle_of_Deborah]

I wasn't drawing a direct geographical connection between the two events but saying activity in the west is on the increase.

[spodefly]

40+ posts and no "it's Bush's fault?" we're slacking

It's San Andreas's fault.

[MineralMan]

Zorro's great. I have a kitty that looks just like him.