It's really quite serious, these are the worst floods in Thailand since 1949," Cochrane said.
In Bangkok officials beefed up flood prevention measures as waterways, including the main Chao Phraya River, became bloated by rising water.
"There are walls still being built in the north of the city," Cochrane said Wednesday. "One of the challenges is the areas where flood waters are typically diverted to protect the capital and protect the economic center of the country, those areas are already flooded, so there's potentially not much room for those waters to go."