Flood in Denali, Alaska
Flood August 2, 2019 – August 8, 2019 · Denali, Alaska
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Up to 10 inches of rain fell in Denali National Park the first 8 days of Aug 2019. Saturated soils in steep terrain resulted in multiple mudslides that impacted the Denali Park Road. A larger slide on Aug 4th closed the road at MP48 for several hours. Due to the excessive rainfall and rock/mudslides, the NPS took preventative measures and closed the road beyond MP30 Teklanika Rest Area until conditions improved.
Saturated soils combined with over 4 inches of rain the first week of August in Healy caused Dry Creek to rise overbank on Aug 6-7th and resulted in flooding. The flooding washed out several roads, driveways, and the approach to the Tipple Bridge which is used to access infrastructure at the Usibelli Coal Mine.
The wider storm
A series of weather fronts associated with an an atmospheric river moved into the Bering Sea and across Interior Alaska during the first week of August. Rainfall totals between Aug 1-8th ranged from 5 to 10 inches across the Alaska Range. This resulted in mudslides and flooding that impacted Denali National Park and the community of Healy.
Began near Healy (63.8579, -149.0527).
Source: NOAA Storm Events Database, event 852462. Narratives are written by the National Weather Service forecast office that issued the report.
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