I bet your waiting for me to say this is a sign of the approaching end times. MWHAHAHAHA!
No, well maybe, if it is, then the occurrences will increase. If in a few years time Armageddon begins then yeah we could say it was a sign of the end but frankly there have been worse periods of earth shattering events like earthquakes volcanoes and meteors. So nya, I ain't as crazy as you would like or want to think.