A tropical depression is likely to form in the Caribbean Sea as soon as this weekend, while Subtropical Storm Patty formed in the Atlantic Saturday. A broad area of low pressure is forming in the southwestern Caribbean Sea is increasingly likely to become a tropical depression this weekend or early next week as it drifts northward or northwestward in the central or

With less than one month left in hurricane season, the National Hurricane Center said Saturday that Subtropical Storm Patty has formed over the northern Atlantic. NHC is also tracking two storms in the Caribbean, one that has a high chance of development.