The forecast calls for frowns.
Stormy dance is a Uncommon Fortnite Emote. This emote is one of the Battle Pass cosmetics in Chapter 2 Season 3. You can get it once you have reached Tier 94.
The gesture Stormy belongs to Chapter 2 Season 3. Thia gesture is available as a reward by unlocking Level 94 of Battle Pass from Chapter 2 Season 3.