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The Guardian - US
The Guardian - US
World
Guardian staff and agencies

What is a storm surge and what is the threat from Hurricane Idalia?

A flooded street in New Port Richey, Florida, after Hurricane Idalia made landfall. What is a storm surge? Find out the meaning with our explainer.
A flooded street in New Port Richey, Florida, after Hurricane Idalia made landfall. What is a storm surge? Find out the meaning with our explainer. Photograph: Miguel J Rodriguez Carrillo/AFP/Getty Images

As Hurricane Idalia hits Florida and Georgia it is unleashing powerful winds and torrential rains but it is storm surges that often pose the greatest threat to life and property when such storms strike, the National Hurricane Center has said.

With Hurricane Idalia the ocean water pouring onto land could be up to 15ft (4.6 meters) along parts of Florida’s west coast, the NHC projected in its briefing on Tuesday. Farther south, up to 7ft of storm surge is expected in the Tampa Bay area.

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