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  • Posted by radicalbill 9 years, 2 months ago
    This is most likely super sonic aircraft. We had the identical events a few years ago, and back in the 70's here in the northeast, and both times, it was top secret recon missions using spy planes that were breaking the sound barrier.

    The intervals sound like there are several planes launching at the same time.

    It would be interesting to see the radar hits for the area and the real time satellite feeds.

    I used to see live feeds from satellites over the U.S. in the NOC and we would occasionally see streaks above the clouds leaving a trail.

    We knew what they were, but knew better than to say anything.
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  • Posted by CircuitGuy 9 years, 2 months ago
    My wild guess is human-made but something ordinary, not secret or involving new technology.

    My first thought was earthquakes like ones we had in WI a couple years ago: http://news.discovery.com/human/psycholo...
    They're saying this appears not to be an from the ground.

    I don't think it's a sonic boom because they said t was repeated, and a sonic boom is a wake of disturbance following an supersonic object. The places where it was heard were around 40 miles apart. I'd think it would be wider if it were a high-altitude supersonic aircraft. It will be interesting to find the source.
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  • Posted by radicalbill 9 years, 2 months ago
    Tinker AFB, look at their N/S runway. Perfect placement to explain the sonic booms. They are not admitting to it, but they are clearly flying something very fast to test the engines.
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  • Posted by DrZarkov99 9 years, 2 months ago
    No mention of cloud coverage at the time, but there are still a lot of unknowns about atmospheric phenomenon. Until we were able to do extended imaging of the atmosphere from above, no one knew about the "sprites", the electrical disturbances that extend upward out of the atmosphere. Since there have been numerous such unexplained "skyquakes" all around the globe for some number of years, I'd opt for an as yet unobserved natural source.
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  • Posted by $ allosaur 9 years, 2 months ago
    Back in the 90s I was sitting in an Alabama state prison tower late one quiet night.
    For about four seconds I felt a gentle shaking and heard what sounded like distant thunder.
    The next day on the news I learned that an abandoned coal mine in a named place that I knew to be near the prison had been dynamited to make it cave in.
    Up until then I wondered if the Mississippi basin had "settled" again.
    That was the reported cause of the same sort of shaking and distant noise heard when I was also sitting in a chair in an apartment during the 70s in a neighboring county.
    And that was also at night.
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    • Posted by plusaf 9 years, 2 months ago
      :)... when that large quake hit up in Virginia a year or so back, I felt the effects in my home in NW Raleigh! House shook, sounding like a VERY strong gust of wind suddenly hit.

      Having felt a LOT of quakes of various intensities in over two dozen years in Silicon Valley, CA, I immediately made my usual conjecture: "Either we just had about a 2.4 Richter near here, or there's some city a few hundred miles away that's now just about two feet tall...."

      Works for nearly all quakes.
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