Ice Storm is the 5th In-Game Fortnite "Live Event" which took place on January 19, 2019 at 11:00 AM, PST.
A few days after an Ice Sphere appeared on top of Polar Peak, players were able to see that the Ice King was inside the sphere. If you looked closely, you could see that the Ice King was holding fragments of Kevin the cube. Meanwhile, a countdown appeared in every single TV that was in the Island, alerting people that a snow storm was coming. At the end of that countdown, the sphere cracked, and the Ice King started to unleash his "power", and summoned a bigger version of himself, and then he covered the entire Map with snow, and with that, Ice Zombies appeared all over the map. All players of the game were given Ice Storm Challenges to complete, which rewarded players with 500 Xp each, as well as a Weapon Wrap upon completing 6, and a Glider upon completing all 12.