That's the NOAA tsunami map (https://www.ncei.noaa.gov/maps/hazards/?layers=0). The tsunamis never originate in the shelf Andaman Sea; the closest place where they do is along the seismically active zone off the cost of Indonesia. If I open the "tsunami observations" tab and click around Phuket, it seems like the only tsunami that was able to reach it was the 2004 one, the most powerful tsunami ever. So going off the base rate, ie one (1) tsunami in the history of observation, it doesn't seem like it should be a concern at all. What prompted you to create the market? @traders, am I missing something? Why the hell was it trading at 17%?