 A tropical wave moved off the coast of Africa on August 9 , and spawned Tropical Storm Fran four days later , before it moved through the southern <unk> Islands on August 14 . While Fran dissipated shortly after that , the tropical wave progressed into the northeastern Pacific Ocean . The wave spawned Tropical Depression Fourteen @-@ E 808 mi ( 1 @,@ 300 km ) east @-@ southeast of Hurricane Julio . The depression moved westward for the next several days . As Julio weakened , the depression began to increase in strength . It became Tropical Storm Kenna on August 22 and continued to strengthen into a hurricane on August 25 , peaking with winds of 85 mph ( 137 km / h ) the next day . On August 26 , a strong frontal trough weakened the high pressure system to the storm 's north , causing a turn to the north during the next few days . The hurricane weakened in response to cooler water and increasing vertical wind shear , which removed convection from its center . Kenna weakened back to tropical storm strength on August 28 , then into a tropical depression on August 29 . The system dissipated as a tropical cyclone on August 30 . 
