000 ABPZ20 KNHC 261131 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 500 AM PDT SAT SEP 26 2015 For the eastern North Pacific...east of 140 degrees west longitude: Shower and thunderstorm activity associated with an area of low pressure located about 400 miles south-southwest of Acapulco, Mexico, has changed little in organization overnight. However, environmental conditions are conducive for development, and a tropical depression is expected to form during the next day or so while the low moves northward at about 5 mph. Interests along the southern coast of Mexico should monitor the progress of this system during the next several days. * Formation chance through 48 hours...high...90 percent * Formation chance through 5 days...high...90 percent A small low pressure system is producing a concentrated area of showers and thunderstorms that extend about 200 miles offshore the coasts of Guatemala and El Salvador. The low is expected to move little or drift westward during the next couple of days, and development appears unlikely due to its proximity to land and unfavorable upper-level winds. Regardless of tropical cyclone development, this system could produce heavy rains across portions of El Salvador and southern Guatemala during the next few days. These rains have the potential to cause life-threatening flash floods and mud slides. * Formation chance through 48 hours...low...30 percent * Formation chance through 5 days...low...30 percent An area of low pressure could form early next week about 1000 miles southwest of the southern tip of the Baja California peninsula. Any development of this system later next week should be slow to occur while it moves slowly northward. * Formation chance through 48 hours...low...near 0 percent * Formation chance through 5 days...low...20 percent $$ Forecaster Kimberlain/Cangialosi