000 ABPZ20 KNHC 040533 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 1100 PM PDT SAT SEP 3 2016 For the eastern North Pacific...east of 140 degrees west longitude: Cloudiness and thunderstorms associated with an elongated area of low pressure extend westward for several hundred miles from the southern coast of Mexico. Satellite data suggest that a circulation may be developing a few hundred miles south-southwest of Manzanillo, Mexico, and that the associated thunderstorm activity is showing some signs of organization. Upper-level winds are forecast to become more conducive for development, and a tropical depression is expected to form later today or Monday while the disturbance moves slowly northward and then northwestward parallel to the southwestern coast of Mexico. Regardless of development, the system is expected to bring very heavy rains and gusty winds to southwestern Mexico. Total rainfall amounts of 5 to 10 inches with isolated totals up to 15 inches are possible over the weekend and early next week across the southern Mexico states of Oaxaca, Guerrero, Michoacan, Colima, Jalisco, and Nayarit. These rains could produce life-threatening flash floods and mud slides, especially in areas of mountainous terrain. Interests in these areas as well as the Baja California peninsula should monitor the progress of this disturbance. * Formation chance through 48 hours...high...80 percent * Formation chance through 5 days...high...90 percent An area of low pressure could form in a few days about 1500 miles southwest of the southern tip of the Baja California peninsula. Any development of this system should be slow to occur while the system moves little. * Formation chance through 48 hours...low...near 0 percent * Formation chance through 5 days...low...20 percent Another area of low pressure is expected to form later this week several hundred miles south or southwest of Manzanillo, Mexico. Some gradual development of this system is possible after that time while it moves generally westward. * Formation chance through 48 hours...low...near 0 percent * Formation chance through 5 days...low...20 percent $$ Forecaster Kimberlain