On December 26, 2004, a 9.1 earthquake off the coast of Sumatra led to a massive tsunami across the entire northern half of the Indian Ocean that killed tens of thousands of people. Having had a few requests for information from friends of mine in the United States already, I would like to comment that here in Chiang Mai I have not felt either the 8.6 earthquake off the coast of Sumatra this morning nor the 8.2 aftershock that happened within the last hour or two.
There have been two issued tsunami watches for the Indian Ocean coasts of various countries (including Indonesia, Malaysia, Thailand, Burma, and Bangladesh), but so far no large tsunami waves have been found in any region. I will update this note if more information comes to the contrary, but in the meantime, there appears to be little to worry about here, though my thoughts and concerns are with the people of Indonesia as they cope with a serious set of earthquakes. That said, there is nothing to panic or worry about here. So far we have been quite blessed in that regard.