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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 AM PDT Thu Jul 20 2017
For the eastern North Pacific...east of 140 degrees west longitude:
The National Hurricane Center is issuing advisories on Tropical
Storm Fernanda, located more than a thousand miles east of Hilo,
Hawaii, on Tropical Storm Greg, located several hundred miles south-
southwest of the southern tip of the Baja California peninsula, and
on Tropical Depression Eight-E, located more than a thousand miles
southwest of the southern tip of the Baja California peninsula.
1. Showers and thunderstorms associated with a broad low pressure area
centered several hundred miles south of Mexico continue to show
signs of organization. Environmental conditions are forecast to be
conducive for development of this system while it moves westward to
west-northwestward at 10 to 15 mph, and a tropical depression is
expected to form well southwest of Mexico over the weekend.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...90 percent.
2. Disorganized cloudiness and showers in the far eastern Pacific
southwest of Central America are associated with a tropical wave.
Environmental conditions are forecast to become increasingly
favorable for development, and a tropical depression will likely
form by early next week while the system moves west-northwestward at
10 to 15 mph.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...high...80 percent.
Forecaster Blake
Original author: NHC
