Flood in Susitna Valley, Alaska

Flood July 19, 2022 – July 21, 2022 · Susitna Valley, Alaska

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

What the National Weather Service wrote

Hydrographs ands tabular data for Willow Creek showed action stage was exceeded by

July 19 at 4pm, minor flood stage was exceeded by July 19 at 9pm, crest occurred on July 20 at 5am.

Other creeks in 145 that exceeded action stage: Little Susitna River, Willow Creek near Willow, Susitna River at Gold Creek & Parks Hwy Bridge, Talkeetna River near Railroad Bridge.

The wider storm

After the two months of dry and sunny weather due to mostly upper level ridging in place across much of Alaska, the pattern flipped for the second half of the month to more of an upper level trough as the upper level ridge shifted to the east. This resulted in multiple storm systems moving into Southcentral with rounds of heavy rainfall that resulted in small streams and river rises in the area.

Began near Willow (61.7676, -150.0681).

Source: NOAA Storm Events Database, event 1048251. Narratives are written by the National Weather Service forecast office that issued the report.

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