Flood in Susitna Valley, Alaska

Flood September 1, 2023 – September 2, 2023 · Susitna Valley, Alaska

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

What the National Weather Service wrote

Heavy rains of 1-2 inches in 24 hours caused widespread minor flooding across the Talkeetna and Little Susitna Basins. Minor flooding was recorded at several river gauges and long periods of elevated river levels, exacerbated river bank erosion in the areas around Talkeetna.

The wider storm

Saturated conditions from preceding storms, combined with widespread heavy rainfall of 1-2 inches over a 24 hour period, across the Susitna and Matanuska River Valleys Sept 1, 2023. These conditions and widespread, consistent rainfall pushed streams to bankfull with large swaths of the valleys experiencing minor flooding.

Began near Talkeetna (62.3331, -150.1251).

Source: NOAA Storm Events Database, event 1129881. Narratives are written by the National Weather Service forecast office that issued the report.

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