Tornado in Sioux County, Iowa
Tornado August 5, 2023 · Sioux County, Iowa
NOAA recorded where this tornado touched down but not where it lifted, so it appears as a point. Other tornadoes recorded nearby that day are shown faint.
What the National Weather Service wrote
Photographic evidence showed a very brief tornado touchdown west of Grant Avenue north of 420th Street. There was no known damage to provide a rating.
The wider storm
An outflow boundary from earlier day convection focused a gradient of instability and storm development with additional destabilization from heating by early afternoon. Boundary interactions from sluggish storms led to training of heavy rainfall cores, as well as a couple brief tornadoes. Extensive flooding resulted in a state disaster declaration for Sioux County.
Began near Sioux Center (43.0470, -96.2090).
Other tornadoes from the same storm system
1 more tornado the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 1135896. Narratives are written by the National Weather Service forecast office that issued the report.
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