Flood — Upper Koyukuk Valley, Alaska

2019-05-22 to 2019-05-24 · near Allakaket, Upper Koyukuk Valley, Alaska

Event narrative

In the village of Allakaket, several roads were inundated including First and Second Avenue. Water also flowed over the road adjacent to the store. Several outbuildings were flooded and/or moved to higher ground. The local observer estimates water levels would need to rise 2 feet to flood the lowest elevation house. There were no known permanent structures impacted.

Wider weather episode

Higher than average winter snow pack (180% of average) in the Koyukuk watershed resulted in high water for several villages along the Koyukuk River. The village of Allakaket experienced the most significant impacts. There were two distinct peaks in water levels due to fluctuating warm temperatures well above freezing.

View location on OpenStreetMap → (66.5638, -152.6578)

Source: NOAA Storm Events Database, event_id 826909. Narrative written by the NWS forecast office that issued the report.