Tropical storm and hurricane activity is about thirty percent above the 1981-2010 average in the Atlantic basin, NOAA has announced.
So far, 19 major storms have formed in the region this year. Experts say there are a variety of reasons why the strength and duration of the storms has been so intense.
"High sea surface temperatures may have been a factor," says Brian Dillon, a meteorologist at The Weather Network.
"That could explain why Sandy intensified so quickly."
El Niņo may have also played a role.
"With El Niņo, we saw weather patterns align to increase the development of tropical storms globally," Dillon says.
"There was a spike in activity in the Pacific and Indian oceans this year, and Asia was hit with above-average tropical typhoons."
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