There's a smell before it rains from a blend of oils released from the earth into the air. It's a pleasant smell. Though totally unlike the storm that awaits the Alexandrians and Rick's group in The Walking Dead.
Atlanta is past. The Governor, Gareth, and Dawn Lerner, all killed. A new locale brings new crises, and a new nemesis. This begins part III, an appreciation of Rick Grimes in The Walking Dead, season's 5 and 6 first half.
Sasha seems to be the only one of Rick's group who hasn't accepted their new surroundings. Yet I actually believe she will later.That's what The Walking Dead show is about: character growth and continually-evolving story lines.