posted on Aug, 24 2011 @ 12:31 PM
I think I may have found something interesting. Now, I am not making a prediction by any means, and don't normally go around fear-mongering, but I
live near Charleston, South Carolina, and remembered that there was a massive.....estimated magnitude 9.5 to 10 earthquake in Charleston, S.C. on
August 31st, 1886. It was one of the worst earthquakes to ever hit the United States.
In any event, I was reading through the USGS website and marking down the history of earthquakes in Colorado (where the recent 5.4 was recorded) and
the D.C./Virginia area, where we had the recent 5.9 earthquake. I was curious to see if there was a correlation between Charleston's recorded
earthquakes and ones that occur in or around DC and the area Colorado had their respective earthquake.
I didn't expect to find much, and again, was only curious because both Virginia/DC and Colorado are not on constistently regular earthquake zones.
USGS describes both as "minor zones with rare occurences," and I remember that this was how South Carolina was described.
Now, keep in mind that the magnitude reports elow are estimates, because they didn't have actual measurements until the mid 1960's (Per USGS).
Here is what I found:
In South Carolina, there were two major earthquakes (estimated magnitude 6+) prior to the mid-1950's. There were several reported smaller ones, but
the massive 9.5 to 10 was on August 31st, 1886. The second was an estimated 6 plus on January 23rd, 1903.
In Colorado, there were several magnitude 5-6 estimated earthquakes before the 1960's, but in the area of Trinidad (where the earthquake hit several
days ago), there were only three earthquakes estimated to be above a magnitude 4. The dates for these earthquakes were on December 7th, 1870,
estimated to be magnitude 5+, on September 7th, 1882, estimated to be a whopping 6.6 magnitude, and on November 15th, 1901, estimated to also be above
In the Virginia/DC area, there were 2 earthquakes way back in the late 1700's and early 1800's estimated to be substantial, but other than those,
again only three estimated to be above a 5.0 magnitude before the mid 1900's. The first was on September (no day given) 1884, estimated to be a very
large magnitude 6 plus, on October (no day given) 1885, estimated to be a substantial quake over 5 plus, and on May 31, 1897, estimated to be another
whopper at 6 or 7 magnitude.
Now, again, this is not some prediction, or meant as some fear-mongering post, but according to USGS website data, there APPEARS to be a correlation
between Colorado quakes, Virginia/DC quakes, and Charleston quakes. From just the data, there were substantial quakes in both Colorado and
Virginia/DC immediately prior to (4 years) Charleston having the massive 1886 quake. Then again, there were again substantial quakes in both Colorado
and Virginia/DC just prior to (5.5 years) Charleston having it's second large earthquake in 1903.
I would have just racked it all up to conicidence if the USGS data was just showing a correlation in the 1880's, but when the data showed the
"turn-of-the-century" correlation (1897 to 1903), it seems to strengthen the correlation.
As a conclusion, I wonder whether there will be another large quake near Charleston, South Carolina within the next 4-5 years based upon the apparent
correlation above. I would never go so far as to predict that, but find it interesting that there appears to be a correlation of some sort based on
the USGS data.