In the aftermath of Hurricane Harvey, an event deemed “unprecedented” by the National Weather Service, catastrophic floodwater has swept the Houston metropolitan area. The flooding can be attributed to a combination of long-lasting rains, which pumped extra water into the coastal waterways, and storm surge, which prevented the excess water from draining back into the ocean — a devastating set of simultaneous effects. Hurricane expert Jeff Masters, co-founder of meteorology website Weather Underground, called the phenomenon “compound flooding” in a recent interview with Scientific American. “The water piles up from both sides,” Masters told the publication.
Source: Washington Post