The National Hurricane Center said there's a medium chance (60 percent) that a tropical depression will form in the Caribbean Sea later this week.
Whenever a system forms in the Caribbean hurricane-watchers in the U.S. take notice, because there's a chance the system could end up affecting the Gulf or U.S. East Coast.
However, it's too soon to say if this particular system will be a worry for those in the United States.
Forecast models usually can't get a good handle on a system's potential track until a center of circulation forms, and that's not expected to happen for several days.
As of Sunday morning the tropical wave was located near the Windward Islands and the Caribbean.
It is expected to quickly track to the west at 20-25 mph through Monday morning, and that quick pace should keep it from developing much, according to the hurricane center.
It could, however, bring some heavy rain and gusty winds to parts of the Windward and Leeward islands through Monday morning.
Once it gets into the Caribbean the disturbance is expected to slow down, the hurricane center said, and it could find conditions more favorable for it to develop into a tropical depression.
There's a 60 percent probability of a depression forming in the next seven days, according to the hurricane center.
The Caribbean is no stranger to developing tropical (or subtropical) systems this time of year. Here is a look at past origin points for systems and their tracks for Oct. 21-31: