El Niño's Arrival and Its Impact on Weather and Climate.

The National Oceanic and Atmospheric Administration has officially declared the presence of El Niño, a natural climate phenomenon marked by warmer-than-average sea surface temperatures in the central and eastern Pacific Ocean near the equator. For hurricane season, the Atlantic basin tends to see a less-active year in terms of the number of storms due to increased wind shear during El Niño. However, the extremely warm Atlantic basin provides higher-than-normal uncertainty as to how the season will play out.