Okay, according to this page:
http://www.timeanddate.com/worldclock/city.html?n=28Bangkok is 7 hours AHEAD of GMT. So, that means the e-mail from Andy was sent at 11:30 AM on Monday, Bangkok time. This was more than a day after the tsunami hit, so I think we can assume he's okay.
I don't know Andy personally, but I had e-mailed him about an order, fully expecting to not hear back until after his vacation. If he was truly in Thailand, it seems plausible that he may have expected to not be checking e-mail at all, but after the Tsunami decided to log on to get a message out to his family that he was okay. While he was on, he responded to my e-mail about my order.
Of course, all of this is just conjecture. Andy will probably have a good laugh at us when he gets back and reads this thread. I don't even know if anyone knows for sure that he's in Thailand.