000 ABPZ20 KNHC 192328 TWOEP 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: 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