Tropical Depression 18 has formed. It is located 785 miles southwest of the southern tip of Baja California. Latest satellite imagery shows intense convection. But, it's south of the circulation center. Environmental conditions will be favorable as it tracks slowly to the north and northeast over the next few days. It is expected to eventually turn back northwest and dissipate. Thus, 18 poses no threat to land.
A second area of disturbed weather is located about 1,250 miles east-southeast of the Big Island of Hawaii. Environmental conditions are a bit more hostile within this region, which will limit any quick development in the near term. However, as the system continues to track to the west, it will encounter increasingly more favorable atmospheric conditions which could provide a slow-strengthening trend toward the middle of the upcoming week.
By AccuWeather Senior Meteorologist Dave Samuhel
872 ABPZ20 KNHC 251731 TWOEP TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 1100 AM PDT SUN SEP 25 2016 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on newly formed Tropical Depression Eighteen-E, located well southwest of the southern tip of the Baja California peninsula. A broad area of low pressure located about 1250 miles east-southeast of the Big Island of Hawaii continues to produce disorganized showers and thunderstorms. Any development of this disturbance should be slow to occur during the next couple of days. After that time, environmental conditions could become more conducive for development. This system is expected to move west-northwestward during the next day or so, and then turn northward as it approaches the Central Pacific basin. * Formation chance through 48 hours...low...10 percent * Formation chance through 5 days...medium...50 percent && Public Advisories on Eighteen-E are issued under WMO header WTPZ33 KNHC and under AWIPS header MIATCPEP3. Forecast/Advisories on Eighteen-E are issued under WMO header WTPZ23 KNHC and under AWIPS header MIATCMEP3. $$ Forecaster Brown