Video captures moment house collapses & swept away in flood.

Juneau, Alaska, declared an emergency Sunday after record glacial flooding destroyed at least two buildings and forced residents to evacuate.

The Mendenhall River first flooded Saturday following a major glacial dam outburst from Suicide Basin, a side basin on the 3,000-year-old Mendenhall Glacier, some 12 miles north of Alaska's state capital, per a statement from the City and Borough of Juneau.