The 2014 Atlantic Hurricane Season was the first season to feature a major hurricane landfall in the United States in 9 years. A below average hurricane season, activity was limited due to the onset of an El Niño developing across the equatorial Pacific. The season officially began on June 1 and ended on November 30, dates that conventionally delimit the period during each year when most tropical cyclones form in the Atlantic Ocean. The first and most destructive storm of the season, Arthur, formed on July 1 and the final storm of the season, Isaias, dissipated on November 4.