Tropical Storm Rafael is expected to weaken as the NHC tracks another system in the Caribbean that is expected to move into "unfavorable conditions."

Once a powerful Category 3 hurricane, Rafael has significantly weakened and downgraded to a tropical depression as it moves across the Gulf of Mexico. See the latest:

Tropical Storm Rafael is expected to dissipate in the Gulf of Mexico before it reaches land but could generate life-threatening rip currents along the Gulf Coast through the weekend, forecasters with the National Hurricane Center in Miami said Sunday.