City officials in Juneau, Alaska, have issued an emergency declaration as a glacier lake outburst flood wreaks havoc near the city, where structures have been destroyed. SUBSCRIBE to ABC News on YouTube: bit.ly/2vZb6yP Latest updates: abcnews.go.com Watch FULL EPISODES on Hulu: abcn.ws/3bzvQQn #news #alaska #flood #glacier #juneau #abcnews