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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 PM PDT Thu Oct 18 2018

For the eastern North Pacific...east of 140 degrees west longitude:

1. A trough of low pressure continues to produce disorganized showers
and thunderstorms a couple of hundred miles south of the southern
coast of Mexico. This system has become less organized since
yesterday, however, environmental conditions are expected to become
more favorable for development and a tropical depression is still
likely to form over the weekend or early next week while the system
moves generally west-northwestward at 10 to 15 mph, near or just
offshore the coast of southern Mexico.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...80 percent.

2. Another trough of low pressure has developed within a large area of
disturbed weather that extends from Central America westward to
south of the Gulf of Tehuantepec. Some gradual development of this
system is possible over the next few days while it moves slowly
westward, near the coast of southern Mexico. Additional information
on the broad area of disturbed weather that extends from Central
America to south of the Gulf of Tehuantepec can be found in High
Seas Forecasts issued by the National Weather Service.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...20 percent.

High Seas Forecasts issued by the National Weather Service are
available under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and
on the web at https://ocean.weather.gov/shtml/NFDHSFEPI.shtml.

Forecaster Zelinsky