 Tropical Storm Karina was a weak , short @-@ lived tropical cyclone that developed during the 2008 Pacific hurricane season . The 12th tropical cyclone and 11th named storm of the season , it originated out of a tropical wave in the North Atlantic hurricane basin . The wave entered the Pacific Ocean on August 30 and spawned an area of low pressure off the western coast of Mexico on the morning of September 1 . The low had become sufficiently organized to be declared a tropical depression the next morning . The depression quickly developed into a tropical storm later in the morning , at which time it was named Karina and reached its peak intensity of 40 miles per hour ( 65 km / h ) with a minimum pressure of 1000 mbar ( hPa ; 29 @.@ 54 inHg ) . Later that day , after being classified a tropical storm for 12 hours , wind shear weakened the storm to a depression on September 3 and it dissipated shortly thereafter . 
