SAN JUAN, Puerto Rico -- The Atlantic may be brewing up another tropical depression.

Forecasters say a cluster of wind and rain swarming toward the Dominican Republic could become a tropical depression in the next few days and batter storm-drenched Haiti.

The National Weather Service says the slow-moving system had been largely disorganized, but strengthened suddenly when it reached Puerto Rico and the U.S. Virgin Islands.

Emergency officials in both the Dominican Republic and Haiti have issued warnings for heavy rain. Haiti is still struggling to recover from three recent hurricanes and a tropical storm that killed 425 people.

The National Hurricane Center says "by no means is the season over with," predicting that the ocean could spit out four or five more storms.

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