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Issued: Aug 19, 2013 08:00 am HST

For the central north Pacific, between 140°W and 180.

1. An area of low pressure about 1000 miles west-southwest of Kauai Hawaii is moving west northwestward at 10 to 15 mph. Thunderstorms continue to pulse near an apparent low level circulation center, but upper level winds are currently not conducive for development. However, conditions may become more conducive for development on Tuesday, and this system has a medium chance, 40 percent, of becoming a tropical cyclone during the next 48 hours.

2. Showers and thunderstorms associated with a surface trough about 750 miles southeast of the Big Island of Hawaii have become less organized overnight. Strong upper level winds are expected to prevent significant development within this area through Tuesday, but winds aloft may weaken by Wednesday. This system has a low chance, 10 percent, of becoming a tropical cyclone during the next 48 hours.

Elsewhere, no tropical cyclones are expected through Wednesday morning.


Graphical Tropical Weather Outlook

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List of Central Pacific Outlooks (June 2010-present)