Tropical Storm Frank expected to develop in the next couple of days off Mexico’s Pacific Coast

Shower and thunderstorm activity is showing signs of organization in association with an area of low pressure located a few hundred miles south of the coast of southern Mexico.

Recent satellite-derived wind data also indicates the circulation is gradually becoming better defined. Environmental conditions appear conducive to additional development, and this system is expected to become a tropical depression over the next day or so.

This low-pressure area is forecast to move generally westward at 10 to 15 mph, remaining well south of the coast of southern and southwestern Mexico during the next . . .