Juneau, Alaska, is facing record-breaking flooding after meltwater from a glacier-dammed lake behind the Mendenhall Glacier surged into the Mendenhall River, forcing evacuations and prompting a flood warning. Water levels climbed from 9.85 feet on Tuesday to over 16 feet by Wednesday, exceeding major flood thresholds and setting a new record. Governor Mike Dunleavy has declared a state disaster, according to BBC.

Glacial lake outbursts occur when natural ice or rock dams suddenly fail, releasing large volumes of water. Juneau has experienced such flooding almost every year since 2011, with last year’s event damaging hundreds of homes. Scientists warn climate change is increasing the frequency and severity of these dangerous floods worldwide.