A strong 7.1 magnitude earthquake off the coast of Honduras as it registered here in Holmes County, Ohio.  Helicorder gain is set to 20, the same as for the screenshot in the Seismicity! post below.  Epicenter was 80 miles NNE of La Ceiba, Honduras.  A basin wide tsunami was not predicted but there is a local tsunami watch in effect.

4 thoughts on “Magnitude 7.1 – OFFSHORE HONDURAS

  1. Thanks. You knew I would ask.

    The report of the quake was one of the first things I heard as I woke up this morning.

    In terms of the actual amplitude at the measurement location (i.e. your basement), what is the largest event you’ve measured?

  2. Yes, I did. When I heard it on the news, I got up and immediately started the procedures to upload a screen shot. I wasn’t sure I could do it faster than you could generate a comment but I did! 🙂

    I don’t know the answer to your question. I suspect that the largest amplitude that the sensor has detected was the Great Sumatra-Andaman Island earthquake in 2004. The minimum surface displacement everywhere on earth was 1 cm (probably pk-pk but I don’t remember). I didn’t measure it though because we were in day three without power due to the big ice storm here. Then in March of 2005 there was an 8.4 magnitude quake in the same general region that might take the blue ribbon…I’d have to look back at my records but I think it saturated the ADC, it clipped anyway. Some others, somewhat smaller but closer, have clipped too. Even if it was calibrated, which it is not, the maximum values would be lost due to the clipping.

  3. Hee hee – glad I’m keeping you motivated. You get an A+.

    Oh – Bill R returned your greetings, as did Mr. Bailey whom we visited on Tuesday. (I presumed that you would want to tell him hello as well.)


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