Glacial outburst floods aren't a new phenomenon in Alaska, but climate change is scrambling the geography of risk.

City officials say the flood threat has ended and credit barriers with preventing more damage from the Mendenhall Glacier outburst

For the third consecutive year, a wave of water gushed out of an Alaskan glacial lake, threatening the state’s capital city of Juneau. But, flood barriers installed by the city managed to prevent disaster from unfolding in the picturesque port town despite record-breaking water levels this week.