Is Hurricane Sandy evidence of global warming and a reason to vote for Mr. Obama? That’s what Jennifer Granholm claimed on CNN tonight.
This Wall Street Journal article debunks such a view:
Roger Pielke: Hurricanes and Human Choice
Sandy was terrible, but we’re currently in a relative hurricane ‘drought.’ Connecting energy policy and disasters makes little scientific sense.
In studying hurricanes, we can make rough comparisons over time by adjusting past losses to account for inflation and the growth of coastal communities. If Sandy causes $20 billion in damage (in 2012 dollars), it would rank as the 17th most damaging hurricane or tropical storm (out of 242) to hit the U.S. since 1900—a significant event, but not close to the top 10. The Great Miami Hurricane of 1926 tops the list (according to estimates by the catastrophe-insurance provider ICAT), as it would cause $180 billion in damage if it were to strike today. Hurricane Katrina ranks fourth at $85 billion.
To put things into even starker perspective, consider that from August 1954 through August 1955, the East Coast saw three different storms make landfall—Carol, Hazel and Diane—that in 2012 each would have caused about twice as much damage as Sandy.
While it’s hardly mentioned in the media, the U.S. is currently in an extended and intense hurricane “drought.” The last Category 3 or stronger storm to make landfall was Wilma in 2005. The more than seven years since then is the longest such span in over a century.
Flood damage has decreased as a proportion of the economy since reliable records were first kept by the National Weather Service in the 1930s, and there is no evidence of increasing extreme river floods. Historic tornado damage (adjusted for changing levels of development) has decreased since 1950, paralleling a dramatic reduction in casualties. Although the tragic impacts of tornadoes in 2011 (including 553 confirmed deaths) were comparable only to those of 1953 and 1964, such tornado impacts were far more common in the first half of the 20th century.
Read the entire article here: