Hurricane forecasters watching thunderstorms coming up in the Caribbean

Hurricane forecasters are watching another blob of showers and thunderstorms in what's turning out to be a messy start to the Atlantic hurricane season.

On Monday afternoon, forecasters said a system churning off the South American coast has a 20 percent chance of forming over the next five days. It's not expected to become any better organized as it remains close to the Central American coast and the Yucatan Peninsula through the week.

But as it moves into the Gulf of Mexico toward the end of the week, conditions could become more favorable. A track forecast so far points the storm toward Mexico, away from Florida.

The system comes less than three weeks after Alberto made a rare preseason arrival as a lopsided subtropical storm when it formed the last week of May. Having another potential storm develop so soon is not unusual, hurricane center spokesman Dennis Feltgen said, even if it seems stormier than usual in Florida. Last month, the state broke a century-old record for rainfall.