Flood in Armstrong County, Pennsylvania

Flood February 21, 2026 · Armstrong County, Pennsylvania

$100K

Damage as recorded

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

What the National Weather Service wrote

Ice jam flooding occurred along the Allegheny River from Lock 9 to Lock 8. This impacted a campground on the right descending bank and also camps and homes on the left descending bank.

The wider storm

After a prolonged cold period that allowed for rapid river ice growth, a period of unusual warm temperatures helped to melt and rot the ice. During the melt process, some ice jams were observed along the Allegheny River and other tributaries along the Beaver and Ohio Rivers.

Began near Natrona Hgts (40.9457, -79.5489).

Source: NOAA Storm Events Database, event 1321440. Narratives are written by the National Weather Service forecast office that issued the report.

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