 Meanwhile , on April 8 , Weather Services International ( WSI ) issued its first forecast for the hurricane season . In its report , the organization forecast 16 named storms , nine hurricanes , and five major hurricanes . On April 10 , Colorado State University ( CSU ) issued its first forecast for the season , calling for a potentially hyperactive season with 18 named storms , nine hurricanes , four major hurricanes , and an ACE index of 165 . The probabilities of a major hurricane hitting the Gulf Coast and East Coast were well above average . On May 15 , the United Kingdom Met Office ( UKMO ) predicted 14 named storms , with a 70 % chance that the number would be between 10 and 18 , and nine hurricanes with a 70 % chance that the number would be between 4 and 14 . It also predicted an ACE index of 130 with a 70 % chance that the index would be in the range 76 to 184 . On May 23 , 2013 , NOAA issued its first seasonal outlook for the year , stating there was a 70 % likelihood of 13 to 20 named storms , of which seven to eleven could become hurricanes , including three to six major hurricanes ; these ranges are greater than the seasonal average of twelve named storms , six hurricanes and three major hurricanes . On May 30 , the Florida State University Center for Ocean @-@ Atmospheric Prediction Studies , FSU COAPS , issued its first and only prediction for the season . The organization called for 12 to 17 named storms , of which five to ten would further intensify into hurricanes ; no forecast was given for the number of major hurricanes . In addition , an ACE index of 135 units was forecast . 
