The Impact of the 2004 Tsunami on Thailand

The Impact of the 2004 Tsunami on Thailand

This article relates to Under Water

On December 26th 2004, a 9.1 magnitude earthquake struck 31 miles beneath the floor of the Indian Ocean. The force generated was so vast it triggered a devastating tsunami, with waves as high as 100 feet traveling as fast as 500 miles per hour towards land. At least 13 countries suffered casualties, with the death toll estimated at around 230,000. This makes it one of the deadliest disasters in recorded history.

In Thailand alone, at least 5,400 people were killed, and a further 3,000 remained missing, presumed dead. In some instances, entire communities were all but wiped out through death and displacement, with surviving residents continuing to relocate after the tsunami. In the villages of Khao Lak and Nam Khem, despite traditional Spirit Houses being erected to placate those who perished in the tsunami in accordance with regional beliefs, locals estimate that 70% of survivors subsequently vacated the area in fear of ghosts, leaving its population even more depleted.

On a wider scale, the impact could be felt economically. For example, the tourism industry accounted for around 12% of Thailand's GDP, and was directly responsible for 42% of the economy in Phuket province. As a result of the damage inflicted and fear of further danger, visitor arrivals fell by more than 40% following the disaster, and as many as 100,000 people whose livelihoods depended on tourism found themselves out of work.

In an unexpected turn, the fishing industry was also hit hard. Rumors began to circulate that fish from the impact zone's surrounding waters would have fed on the many corpses still lost at sea. This sparked moral and health concerns among much of the public, with fishermen, restaurants, and seafood suppliers unable to sell stock. Given how much the region's diet normally revolves around seafood, officials became concerned about the potential health ramifications of this boycott. In response, they began conducting regular tests on the water from affected areas to reassure the public it was safe, while some officials even cut open the stomachs of fish from the Andaman Sea during public broadcasts, to prove they contained no human remains.

In the longer term, Thailand was one of the driving forces in international efforts to improve tsunami detection and early warning systems to safeguard people from future disasters. Improvements made in the country included the establishment of the National Disaster Warning Center; buoys being placed in the Indian Ocean Rim and Andaman coastal area to monitor underwater seismic activity; the installation of two Automatic Tidal Gauge Stations to confirm if a tsunami will reach Thai shores; 130 warning towers; 47 evacuation towers; 74 radio towers; and 22 information towers to alert people in at-risk areas of impending danger, and to facilitate swift evacuation.

Despite these efforts to build back stronger as a nation, the sights and smells of death that engulfed the streets during the recovery operation still haunt many individuals who experienced them firsthand. Survivors have reported panic attacks triggered by the mere sight of the ocean. Even attempts to reassure residents that the country is now better prepared—such as warning sirens and evacuation drills—can trigger PTSD. Their testimonies are a powerful reminder of the human cost and lingering impact of disaster. In her debut novel Under Water, Tara Menon explores this subject, following a young woman reckoning with the loss of her closest friend during the tsunami.

Phuket, Thailand, after the 2004 tsunami
Photo by Milei.vencel, CC BY-SA 3.0

Filed under Nature and the Environment

This article relates to Under Water. It first ran in the March 25, 2026 issue of BookBrowse Recommends.