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Eastern North Pacific Tropical Weather Outlook

ABPZ20 KNHC 210512

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Wed Sep 20 2017

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

Shower and thunderstorm activity associated with a broad area of low
pressure located just offshore of the southwest coast of Mexico
has increased, but remains disorganized.  Environmental conditions
are expected to be conducive for gradual development, and a tropical
depression is likely to form in two to three days as the system
moves slowly toward the west-northwest.  Regardless of tropical
cyclone formation, heavy rains are expected over portions of
southern Mexico during the next several days.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...high...80 percent.

Forecaster Zelinsky