 A persistent area of thunderstorm activity southwest of Puerto Vallarta became better organized and strengthened into Tropical Depression Twelve @-@ E on August 16 . Moving northwest , the system developed slowly as it was embedded within the Intertropical Convergence Zone . Easterly shear kept the system from reaching tropical storm strength and caused its ultimate dissipation on August 19 . No damages or fatalities were caused by this depression . 
 A persistent area of thunderstorm activity southwest of Puerto Vallarta became better organized and strengthened into Tropical Depression Twelve @-@ E on August 16 . Moving northwest , the system developed slowly as it was embedded within the Intertropical Convergence Zone . Easterly shear kept the system from reaching tropical storm strength and caused its ultimate dissipation on August 19 . No damages or fatalities <a href='uninflect' title='1'><mark>were</mark></a> caused by this depression . 
A persistent area of thunderstorm activity southwest of Puerto Vallarta became better organized and strengthened into Tropical Depression Twelve @-@ E on August 16 . Moving northwest , the system developed slowly as it was embedded within the Intertropical Convergence Zone . Easterly shear kept da system from reaching tropical storm strength and caused its ultimate dissipation on August 19 . No damages or fatalities was caused by this depression .