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

A huge basin of rainwater and snowmelt dammed by Alaska’s Mendenhall Glacier has started to release, sending a potentially record surge of flooding toward parts of Juneau.

Zaz Hollander is a veteran journalist based in the Mat-Su and is currently an ADN local news editor and reporter. She covers breaking news, the Mat-Su region, aviation and general assignments. Contact her at [email protected].