Flood in Upper Koyukuk Valley, Alaska

Flood May 22, 2019 – May 24, 2019 · Upper Koyukuk Valley, Alaska

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

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.

The wider storm

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.

Began near Allakaket (66.5638, -152.6578).

Source: NOAA Storm Events Database, event 826909. Narratives are written by the National Weather Service forecast office that issued the report.

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