"The 2013 Atlantic hurricane season will be 'above average' with 18 tropical storms, nine of which will intensify into hurricanes, forecasters at Colorado State University predicted on Wednesday."
"Four of the hurricanes will be major with sustained winds of at least 111 miles per hour, the leading U.S. storm research team said.
An average season brings about 12 tropical storms, six hurricanes and two major hurricanes in the Atlantic, Caribbean and Gulf of Mexico, according to CSU. The hurricane season runs from June 1 to November 30.
The prediction for a busier 2013 season was based on two factors, the researchers said. Hurricanes thrive on warm water and the Atlantic Ocean has warmed in recent months.
There is also little expectation of an El Nino effect this summer and fall."