Which hurricane/tropical cyclone was the largest?

The Great Hurricane of 1938 in the Atlantic Ocean, which was 800 km (500 miles) wide, may have been the largest. It was certainly the largest to strike New England and the northeast since the Great Colonial Hurricane of 1635. The 1-minute sustained wind speed of the Great Hurricane of 1938 was estimated to be 260 kilometers per hour (160 mph). The storm's central pressure was 940 millibars, compared to normal atmospheric pressure of 1013 millibars. The entire east coast of the United States was impacted, causing 600 to 800 deaths and $306 million in damages (1938 US dollars).

Source: NOAA

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