Hurricane Harvey shows how we underestimate flooding risks in coastal cities, scientists say

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.

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Source: Washington Post

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