The storm could grow into a hurricane by Friday and a major one by the late weekend.

Forecasters say a tropical depression or tropical storm is likely to form within the next day or two.

Tropical Storm Melissa is likely to form in the Caribbean in the next 48 hours, according to the National Hurricane Center.

Tropical Storm Melissa was churning in the Caribbean early Wednesday, according to forecasters warning Hispaniola to expect heavy rains and flooding over the next few days.

The National Hurricane Center said Tropical Storm Melissa could become a hurricane as soon as Thursday, Oct. 23.

Tropical Storm Melissa is moving slowly through the Caribbean Sea on Wednesday, meaning portions of Haiti, the Dominican Republic and Jamaica were expected to see major flooding.

The storm could grow into a hurricane by Friday and a major one by the late weekend.

Tropical Storm Melissa's forecast is filled with uncertainty, prompting some dire worst-case scenarios for Caribbean islands.

The storm is expected to strengthen into a major hurricane by the end of the weekend.

Why meteorologists are so concerned about Tropical Storm Melissa when it becomes a hurricane near Jamaica, Haiti, the Cayman Islands, and Cuba.

The erratic storm was expected to drop copious rain on Jamaica and the southern regions of Haiti and the Dominican Republic through the weekend.

Track Melissa as it's forecasted to become a major hurricane over the weekend.

Tropical Storm Melissa is nearly stationary in the central Caribbean, with forecasters warning it could soon strengthen and brush past Jamaica as a powerful hurricane.

Jamaica prepares for Melissa's arrival as forecasts predict over 72 hours of hurricane conditions and heavy rainfall.

The erratic and slow-moving storm has killed at least three people in Haiti and a fourth person in the Dominican Republic, where another person remains missing.

Track Tropical Storm Melissa as it's forecast to become a major hurricane over the weekend.

Hurricane Melissa became a major hurricane late Saturday with catastrophic flash flooding and landslides in Haiti, the Dominican Republic and Jamaica.

Melissa is expected to strengthen even further into a major catastrophic hurricane when making landfall in Jamaica.