Tropical Depression 18 to strengthen
The first day of autumn brought cooler temperatures, but the Atlantic is still hot and a new threat is on the horizon.
CNN meteorologist Derek Van Dam has the details.
Tracking the Tropics | September 30 evening updateABC Action News tracks tropical developments in the Atlantic and Gulf of Mexico.
Tracking the Tropics | September 30, morning updateABC Action News tracks tropical developments in the Atlantic and Gulf of Mexico.
Tracking the Tropics | September 29 evening updateABC Action News tracks tropical developments in the Atlantic and Gulf of Mexico.
![Tracking the Tropics | September 30 evening update [Video]](https://video.newsserve.net/300/v/20210930/2109302305-Tracking-the-Tropics-September-30-evening-update.jpg){kind=tracking}
![Tracking the Tropics | September 30, morning update [Video]](https://video.newsserve.net/300/v/20210930/2109301350-Tracking-the-Tropics-September-30-morning-update.jpg){kind=tracking}
![Tracking the Tropics | September 29 evening update [Video]](https://video.newsserve.net/300/v/20210929/2109292257-Tracking-the-Tropics-September-29-evening-update.jpg){kind=tracking}
