High Wind in Sioux, Iowa
High Wind December 9, 2025 – December 10, 2025 · Sioux, Iowa
What the National Weather Service wrote
Synoptic northwest winds were occasionally sustained from 40 to 50 mph with gusts as high as 64 mph at an Automated Weather Observing System site near Maurice.
The wider storm
An amplifying clipper system raced from southern Alberta to Wisconsin from later on December 9 through midday on December 10. Intense synoptic winds developed on the back side of the system behind the surging cold front. Widespread northwest wind gusts reached 50 to 70 mph over several hours and resulted in considerable small limb damage and some spotty infrastructure damage.
Source: NOAA Storm Events Database, event 1307089. Narratives are written by the National Weather Service forecast office that issued the report.
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