 A tropical wave emerged into the Atlantic Ocean off the coast of Africa on May 28 . The wave moved across Central America into the northeastern Pacific Ocean , where convection organized with the system on June 6 . The system became well @-@ enough organized to be upgraded to Tropical Depression Three @-@ E on June 8 , while 920 mi ( 1 @,@ 480 km ) south of the southern tip of Baja California . The depression continued to strengthen , and was upgraded to Tropical Storm Cristina on June 9 . 
