Oklahoma shook by its third strongest earthquake on record

Felt in seven states.

13 Feb 2016 – Preliminary data registered this morning’s earthquake at magnitude 5.1, centered 17 miles northwest of Fairview, Oklahoma. 

According to the USGS and the Oklahoma Geological Survey, the magnitude 5.1 quake, which was followed by a pair of aftershocks, was the third strongest on record in the Sooner State, behind only the Nov. 6, 2011 Prague tremor (magnitude 5.6) and the April 9, 1952 Yukon quake (magnitude 5.5).

It was felt as far away as Fayetteville, Arkansas, the Kansas City metro area, and far southeast Nebraska.

https://weather.com/safety/earthquake/news/tulsa-oklahoma-fairview-earthquake-aftershock-usgs

http://abcnews.go.com/US/wireStory/51-39-magnitude-earthquakes-recorded-oklahoma-36917505

Thanks to Deb for this link

“I see that Oklahoma, like Missouri, steals its place names instead of inventing them,” says Deb. “I shudder to think how they pronounce “Prague”, if they also follow MO’s rules of pronunciation!”


11 thoughts on “Oklahoma shook by its third strongest earthquake on record

  1. Fracking and injecting of oily wastewater into the seismic plates will work wonders at sliding them. Class action lawsuit People vs the oil industry. A file is being prepared.

  2. I also sent a link to this…but late obviously..
    we had a simila size n shallow one down in NZ as well
    sunspots just fading round the orb and a clear sun about to present itself
    follows the pattern
    However..for this quake..I had just noticed the last few weeks the area this quake occurred and nearby, had had a DROP in the 2/3/4rated regular daily almost events
    and was thinking the cessation of Fracking would be a relief for the locals, if it stopped the shaking..
    looks like generalised upset of forces etc have made weak spots that will now move more(my theory)

    • I felt it, but it was very slight. I usually have to be sitting still to feel them.

      I also thought that they had made the injection well activity back off recently and thought the EQs would drop off. I have been creating a daily EQ index for OK since 3-15-14. I’m matching it up with activity on spaceweather.com and some weather numbers.

      My favorite source for OK EQs is no more. Now I have to get the list from USGS. I used to see more that were smaller, but ever since seismologist Austin Holland went to New Mexico and they shut down my favorite EQ site, it’s hard to say whether the decline in quantity is due to the injection slow-down, or due to getting the data from another source.

      For a while, when I could get the same data from different sources, it was amazing how different the numbers were for the same events.

      My index is showing lower quantities, but mainly because there are so few EQs less than 2.5. Of course, Saturday was an exception, but according to my index, January 7 was bigger as a day.

      Back to the events from this past weekend: The big one took place about 1:45 after an M-class solar flare, the first one for some time. It often takes a couple of days to see an impact on the geomagnetic storm level, but occasionally they happen in pretty quick succession, or almost simultaneously.

      Even though the EQs near Edmond have stopped, the areas where they continue to happen appear to be in locations that are on the fringes of what I call “bubbles” of EM energy. I’m talking about big sources of EM energy, like antenna farms, big radars, power plants, substations, etc. There is a big radar between Fairview and Medford; and also a big salty body of water, so there’s lots of stuff that’s electrically active.

      Several sources describe EQs as being like “underground lightning.” If you take into account the electrical activity in our environment, and how many phenomena are essentially electrical charge equalization events, then lots of EQs make a lot more sense.

  3. Christchurch NZ was fortunate Sunday when a 5.7 quake centred near the city caused a cliff outside the city to collapse into the ocean.

    http://www.9news.com.au/world/2016/02/14/11/30/earthquake-strikes-east-of-christchurch

    http://www.abc.net.au/news/2016-02-14/magnitude-5.8-earthquake-hits-christchurch/7166604

    http://www.bbc.com/news/world-asia-pacific-35572461

    Christchurch was massively damaged in a major quake in 2011. That one resulted in significant numbers of the population simply leaving the city permanently. Christchurch is right on a major fault line.

  4. We pronounce it as “Preh-ehg”
    And… most states, countries, steal place names.

    We’ve had 21 quakes so far this 2-day weekend around Fairview alone. Many of them around the 3.0 level.

    I love the quakes; they bring out the nutties and their comments on various websites.

    • I too have wondered that. The activity on New Madrid fault shows there is tectonic activity in the region, could cause some stresses some distance away. Maybe there is a volcanic intrusion happening in OK? Has anyone considered that?

  5. Captainfish-“Pre-ehg?” Well, if we had a Prague in Missouri, it would probably be pronounced “Pray-gew”! We have a “Vie-enna” and a “Ver-sales” and just to make sure that we mispronounced Raleigh the same way the Carolinians do, they mispelled it “Rolla”. Lol! But the part that bugs me is when people say they are going to California or Mexico, and I think they mean it! Oh, and leave us not forget the New “Madd-rid” fault. Actually, I think they do that just to thumb their noses at the more pretentious. A little country humor.

  6. Whenever I hear about these earthquakes in OK, they seem to have epicenters that are deeper than most disposal wells. Has anyone dug up the depths where the disposal wells are injecting and correlated them to the depths of the earthquakes. Seems like a simple test to see if the wells have any bearing on the seismic activity yet, I can’t find any info.

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