 On June 19 the UK Met Office ( UKMO ) issued a forecast of 10 tropical storms in the July to November period with a 70 percent chance that the number would be in the range of 7 to 13 . On August 3 , 2007 , Klotzbach 's team lowered its season estimate to 15 named storms , of which eight were to become hurricanes and four to become major hurricanes . Team members noted that conditions had become slightly less favorable for storms than earlier in the year . Sea surface temperature anomalies were cooler , and several Saharan Air Layer events had suppressed development of tropical cyclones . El Niño @-@ Southern Oscillation ( ENSO ) conditions were also noted to have been slightly cooler . 
