Conditions are still favorable for hurricanes. People really need to stay on their toes," said Gerry Bell, the lead hurricane season forecaster for the U.S. National Oceanic and Atmospheric Administration.
Forecasters had predicted the season, which runs through November 30, could produce up to 18 cyclones, and the warm sea temperatures, low wind shear and other factors that contribute to the formation of hurricanes are still in place.
Water in the Caribbean and Atlantic is warmer than usual by 33 to 35 degrees Fahrenheit (0.5 to 1.5 degrees Celsius), Bell said. Hurricanes feed on warm sea water.