1. A concentrated area of showers and thunderstorms located a few
hundred miles southwest of the Cabo Verde Islands is associated
with a tropical wave. Some gradual development of this system is
possible over the next several days while it moves westward across
the tropical Atlantic at 15 to 20 mph.
* Formation chance through 48 hours...low...10 percent.

A tropical wave located a few hundred miles southwest of the Cabo
Verde Islands continues to produce a concentrated area of of showers
and thunderstorms just west of its axis. Some gradual development is
possible over the next several days while the system moves westward
across the tropical Atlantic at 15 to 20 mph.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...30 percent.

反应还算剧烈

1. A tropical wave located over the eastern tropical Atlantic several
hundred miles west-southwest of the Cabo Verde Islands continues to
produce disorganized showers and thunderstorms. Some gradual
development of this system is possible, and a tropical depression
could form by early next week while moving generally westward
across the tropical Atlantic near 20 mph. This system could reach
portions of the Leeward Islands by late Saturday.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...medium...40 percent.