1. Showers and thunderstorms have increased near a broad area of low
pressure centered a couple hundred miles south of the Gulf of
Tehuantepec. Environmental conditions are forecast to become
increasingly conducive for some development after Sunday, and
tropical cyclone formation is likely by the middle of next week
while the system drifts toward the west-northwest or northwest.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...high...70 percent.