Hurricane Sandy and Climate Change

Are superstorms like Hurricane Sandy harbingers of a “new normal” in the unpredictable relationship between climate change and extreme weather events? The answer is not that there is not or cannot be such a connection, but rather that the scientific research needed to prove (or disprove) it must still be conducted.

ATHENS, GEORGIA – In the waning weeks of the North American hurricane season – a time when a superstorm is not expected to cause widespread damage to the eastern coast of the United States – Hurricane Sandy is a grim reminder of the menace of extreme weather events. With the lowest central pressure of the 2012 hurricane season, Sandy may have caused up to $20 billion in damages, making it one of the costliest superstorms in history.

Sandy interacted with a weather system moving toward it from the east, posing difficult challenges for forecasters and nearly unprecedented weather conditions for the region. A similar storm hit New England 20 years ago. But Sandy was worse, delivering hurricane-strength winds, drenching rains, and severe coastal flooding throughout the populous mid-Atlantic and northeast corridor.

Some people will, of course, try to link Sandy with climate change. A similar rush to judgment occurred in the wake of massive tornado outbreaks in the US in recent years, even though the scientific literature does not offer strong support for such a connection. So, from the perspective of climate change, it is best to take a measured view of Sandy, lest hasty reaction harm scientific credibility.

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