 On July 8 , a disturbance located about 1 @,@ 000 miles ( 1 @,@ 600 km ) southwest of the southern tip of the Baja California Peninsula developed a circulation and became Tropical Depression Four @-@ E. Convection increased , and the depression strengthened into Tropical Storm Daniel . Upper @-@ level outflow improved , and Daniel peaked in intensity on July 9 . Daniel slowly declined as it continued westward . It entered the central Pacific on July 11 . Wind shear weakened Daniel as it approached the Big Island , and by July 15 had degenerated into an open wave . 
