The storm is expected to slow down right before landfall in the South, prompting water evacuation preparations and mandatory evacuations in low-lying areas. LEARN MORE: Sally strengthens to a hurricane as Paulette slams Bermuda: https://abcn.ws/3bWuRYV Subscribe to GMA's YouTube page: https://bit.ly/2Zq0dU5 Visit Good Morning America's homepage: https://www.goodmorningamerica.com/ Follow GMA: Facebook: https://www.facebook.com/GoodMorningAmerica Twitter: https://twitter.com/gma Instagram: https://instagram.com/goodmorningamerica Watch full episodes of GMA: http://abc.go.com/shows/good-morning-america https://hulu.tv/2YnifTH #GMA #Sally #TropicalStormSally