“This year’s El Niño, coupled with ongoing climate change, has amplified many of the drivers of hurricanes, and their destructive elements.”
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“El Niño,the warm phase of the Pacific Ocean’s temperature cycle, has been especially strong this year, driving global air and ocean temperatures to levels never before recorded. Hurricanes require sea surface temperatures of 80 degrees Fahrenheit or more to form, so hotter weather tends to favor more hurricanes. In the Atlantic Ocean, El Niño also tends to create wind shear — wind coming from different directions or at different speeds — which usually suppresses hurricane formation, but the water temperatures have been so hot that hurricane activity in the Atlantic has still been above average.
In the Pacific, El Niño is much more favorable to tropical storms (in the eastern Pacific, major tropical storms are called hurricanes, while in the west, they’re known as typhoons). This year, the west coast of North America has already seen several hurricanes. Hurricane Hilary struck California in August, and the winds from Hurricane Dora fanned the flames of wildfires in Hawaii.”