Invest 98L is expected to strengthen and develop into a tropical depression or Tropical storm Melissa over the next few days, NHC forecasters say.

Mapped: Charting Hurricane Rafael’s path through the Gulf of Mexico - The Category 2 storm is forecast to weaken over the next few days as it churns westward in the Gulf of Mexico

The National Hurricane Center is tracking a tropical wave in the central Atlantic which is moving quickly toward the Caribbean. There also is a non-tropical system over the northwestern Atlantic — well away from Florida — that may develop into a tropical or subtropical storm over the next several days, according to AccuWeather.

The National Hurricane Center is tracking Tropical Storm Jerry and a trough of low pressure, along with three tropical waves.

Unlike other storms in this hurricane season, Melissa is likely to have a devastating effect on some of the most populated islands in the Caribbean.

The National Hurricane Center is monitoring three tropical waves: A far eastern Atlantic tropical wave is near 25W from the western Cabo Verde Islands southward, and moving west around 17 mph. Scattered moderate to isolated strong convection is found from 04N to 13N between 21W and 30W.

They're just 4 feet long, but these little boats can withstand 150 mph winds and waves that are several stories tall.

The National Hurricane Center says tropical wave AL95 has a "high" chance of becoming a tropical depression this week.

Hurricane Delta re-strengthened into a category 2 storm in the Gulf of Mexico, and could become a major hurricane by Thursday night or Friday, the U.S. National Hurricane Center (NHC) said on Thursday.