The first tropical depression of the Pacific hurricane season has formed off the coast of Mexico.
The National Hurricane Center in Miami said that as of 8 a.m. PDT Thursday, the center of the tropical depression was about 370 miles south-southwest of the Mexican city of Mazatlan.
The depression's maximum sustained winds are near 30 mph. Forecasters say it could strengthen to a tropical storm before nearing the Mexican coast by Friday night or Saturday.
The depression was moving toward the north at about 9 mph and was expected to turn gradually north-northeast late Friday.
Mexican authorities have issued a tropical storm watch for the Pacific coast from Topolobampo south to El Roblito and for Las Islas Marias.