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TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
500 PM PDT SUN JUL 19 2015

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

1. Showers and thunderstorms associated with a large low pressure
system located about 750 miles southwest of Acapulco, Mexico, are
continuing to become better organized. Satellite-derived wind data
indicate that the surface circulation has also become better
defined. If these recent development trends continue, then a
tropical depression or a tropical storm is likely to form later
tonight or on Monday while the system moves west-northwestward to
northwestward at about 10 mph.
* Formation chance through 48 hours...high...90 percent
* Formation chance through 5 days...high...90 percent

Forecaster Stewart