 A tropical wave moved off the coast of Africa on July 7 . The wave moved west , but it was not until it moved across the Caribbean Sea that the wave 's convection organized . The system entered into the northeastern Pacific Ocean with concentrated convection and a surface center of circulation while southeast of Acapulco . Moving west @-@ northwest , Tropical Depression Ten @-@ E formed on July 20 393 mi ( 632 km ) south of Puerto Ángel , Mexico . Early on the following day , the depression strengthened into Tropical Storm Iselle . The storm continued strengthening while in the proximity of Hurricane Hernan , becoming a hurricane on July 22 . 
 A tropical wave moved off the coast of Africa on July 7 . The wave moved west , but it <a href='negative_concord' title='1'><mark>was</mark></a> <a href='negative_concord' title='2'><mark>not</mark></a>until it moved across the Caribbean Sea that the wave <a href='null_genetive' title='3'><mark>'s</mark></a>convection organized . The system entered into the northeastern Pacific Ocean with concentrated convection and a surface center of circulation while southeast of Acapulco . Moving west @-@ northwest , Tropical Depression Ten @-@ E formed on July 20 393 mi ( 632 km ) south of Puerto Ángel , Mexico . Early on the following day , the depression strengthened into Tropical Storm Iselle . The storm continued strengthening while in the proximity of Hurricane Hernan , becoming a hurricane on July 22 . 
A tropical wave moved off the coast of Africa on July 7 . da wave moved west , but it ain't til it moved across the Caribbean Sea that tdawave  convection organized . The system entered into the northeastern Pacific Ocean wid concentrated convection and a surface center of circulation while southeast of Acapulco . Moving west @-@ northwest , Tropical Depression Ten @-@ E formed on July 20 393 mi ( 632 km ) south of Puerto Ángel , Mexico . Early on the following day , the depression strengthened into Tropical Storm Iselle . Thdatorm continued strengthening while in the proximity of Hurricane Hernan , becoming a hurricane on July 22 .