Hurricane Season(2009) 90%

The season officially ran from . Activity was suppressed primarily by a developing El Niño in the Pacific, which created high wind shear over the Atlantic, tearing apart nascent storms before they could strengthen. Additionally, cooler-than-average sea surface temperatures in the tropical Atlantic further dampened development. Atlantic Hurricane Season of 2009 in - AMS Journals

The 2009 Atlantic hurricane season was notable for being the quietest in over a decade. It was a below-average season, marking the first time since 1997 that fewer than 10 tropical storms formed. Hurricane Season(2009)