A tropical wave moved off the west coast of Africa during the first week of June. It traveled
uneventfully across the tropical north Atlantic and Caribbean Sea, before crossing the isthmus
of Central America into the northeast Pacific ocean. A disturbance formed, with multiple circulation
centers on the 17th and 18th. By the afternoon of the 18th, one center consolidated and the system
had formed into a tropical depression. The system continued to strengthen as it remained quasi-stationary,
becoming a tropical storm on the morning of the 20th and a hurricane on the morning of the 21st. At this
point, Cosme began to accelerate to the north, striking the Mexican coast east of Acapulco on the night of
the 21st. Continuing to accelerate though eastern Mexico, Cosme weakened to a tropical storm and then
a tropical depression. By the 23rd, it had degenerated to a low level swirl south of Brownsville, Texas.
The subsequent development of Tropical Storm Allison in the Gulf of Mexico can be attributed to Cosme.
Its track is below, provided by the National Hurricane Center.
The graphics below show the storm total rainfall for Cosme...data
was provided by the Comision
Nacional del Agua, the parent agency of Mexico's national weather
service.
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