Warm tropical Atlantic waters juiced the 2017 hurricane season

The ocean’s unusually high sea-surface temperatures were a bigger factor than La Niña’s effect on winds

hurricane satellite image

ACTIVE ATLANTIC  A snapshot of the Atlantic Ocean on September 8, 2017, shows three storms swirling in a row, including hurricanes Katia (left), Irma (center) and Jose (right).

NOAA View Global Data Explorer/Wikimedia Commons

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