Hurricane Priscilla was strengthening late Sunday in the Pacific Ocean with heavy rain and gusty winds threatening coastal areas of southwest Mexico.

Priscilla had maximum sustained winds of 80 mph and was headed north-northwest at 3 mph, the US National Hurricane Center in Miami said.

A satellite image of Hurricane Priscilla. NOAA

The hurricane was about 260 miles south-southwest of Cabo Corrientes, Mexico, and about 450 miles south-southwest of Baja California.

Heavy rainfall and gusty winds affected coastal southwestern Mexico with flash flooding possible, the center said.

Priscilla was generating ocean swells that may cause dangerous surf and rip currents in southwestern and western Mexico and southern Baja California.

A tropical storm watch was issued for part of the coast of s

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