Tropical Depression Eleven-E formed within the northern portion of a broad
area of low pressure centered a few hundred miles south of Baja
California. A sequence of daily satellite images and surface analyses
suggest that the precursor low developed on the 19th of August,
from a tropical wave that had crossed into the Pacific basin on the
15th. Dvorak classifications on the low began late on the
21st. The low produced numerous thunderstorms and winds
approaching tropical storm force over a large area but did not develop a
well-defined surface center of circulation until 1800 UTC on the
23rd, when a center formed about 90 miles southwest of Cabo San
Lucas. At this time the convection was already decreasing and so the
initial position represents the peak intensity of the tropical cyclone.
Convection gradually diminished and the depression dissipated the
The "best-track" for the depression is given in
Best track for Tropical Depression Eleven-E, 23-24 August 1999.