Eastern Pacific Tropical Weather Outlook
932 ABPZ20 KNHC 192339 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 PM PDT Sat Sep 19 2026 For the eastern and central North Pacific east of 180 longitude: South-Southwest of Southwestern Mexico (EP99): Showers and thunderstorms associated with a broad area of low pressure located several hundred miles south-southwest of the southwestern coast of Mexico remain disorganized. Environmental conditions are conducive for development, and a tropical depression is expected to form in the next day or so as the system moves generally northward off the coast of southwestern Mexico. Interests along the southwestern and west-central coast of Mexico should monitor the progress of this system. For more information, including gale warnings, please see the High Seas Forecast issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent. * Formation chance through 7 days...high...90 percent. Western East Pacific (EP98): Showers and thunderstorms associated with an area of low pressure located well southwest of the Baja California Peninsula are becoming better organized. Environmental conditions are conducive for development, and a tropical depression is expected to form over the next day or so as it moves westward to west-northwestward at 10 to 15 mph across the western East Pacific. * Formation chance through 48 hours...high...90 percent. * Formation chance through 7 days...high...90 percent. Well East-Southeast of the Hawaiian Islands (Former TD 15-E): Showers and thunderstorms associated with the remnants of Tropical Depression Fifteen-E, located well east of the Hawaiian Islands, remain limited. Environmental conditions appear conducive for some development of this system next week as it moves westward to west-southwestward, and a tropical depression could form well to the south or southeast of the Hawaiian Islands by the middle to latter part of next week. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...medium...60 percent. && High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php