For the North Atlantic…Caribbean Sea and the Gulf of America:

Active Systems:
The National Hurricane Center is issuing advisories on Hurricane  Erin, located a couple of hundred miles to the northeast of the  Southeast Bahamas.

Near the Leeward Islands in the Tropical Atlantic:
A tropical wave located over the central tropical Atlantic continues  to produce a broad area of disorganized showers and thunderstorms. Environmental conditions appear conducive for gradual development of  this system, and a tropical depression could form toward the end of  the week or this weekend. This system should move westward to  west-northwestward at about 20 mph and approach the vicinity of the  northern Leeward Islands on Friday.
* Formation chance through 48 hours…low…10 percent.
* Formation chance through 7 days…medium…60 percent.

Eastern Tropical Atlantic (AL99):
A tropical wave located about a hundred miles to the south of the  Cabo Verde Islands continues to produce disorganized showers and  thunderstorms. Environmental conditions appear marginally favorable  for additional development over the next couple of days as the  system moves westward at around 15 mph. Towards the end of this  week, this system could encounter a less favorable environment,  limiting its development chances after that time.
* Formation chance through 48 hours…low…30 percent.
* Formation chance through 7 days…low…30 percent.

Click here for the latest advisory: https://www.nhc.noaa.gov/