000 ABPZ20 KNHC 041726 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 1100 AM PDT SUN SEP 4 2016 For the eastern North Pacific...east of 140 degrees west longitude: Satellite images indicate that the low pressure system located about 250 miles south-southwest of Manzanillo, Mexico, has become better defined today. In addition, the associated showers and thunderstorms are showing signs of organization, and a tropical depression will likely form later today or tonight. This low is expected to move generally northwestward, and interests in southwestern Mexico and the Baja California peninsula should monitor the progress of this system. Regardless of whether or not development occurs, the system is already bringing very heavy rains and gusty winds to southwestern Mexico, and these conditions are likely to continue for the next couple days. Total rainfall amounts of 5 to 10 inches with isolated totals up to 15 inches are possible 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. * Formation chance through 48 hours...high...90 percent * Formation chance through 5 days...high...90 percent An area of low pressure could form in a couple of days more than one thousand miles southwest of the southern tip of the Baja California peninsula. Development, if any, of this system should be slow to occur while the low meanders. * 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 Cangialosi