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Thunderstorms rumbling in western Iowa late Thursday night and early Friday morning caused a strong gust front to blow through Central Iowa between 12:30 AM and 2 AM Friday. This outflow boundary, as it’s called, can be seen on the radar as a line of what looks like light rain, but it’s actually the wind being detected on the radar. An outflow boundary is a gust of cold sinking wind that blows out from a strong thunderstorm.

See the radar loop here:

Here is a look at some of the max wind gusts overnight from that outflow boundary.

• Des Moines 53 mph
• Perry 52 mph
• Ankeny 51 mph
• Ames 46 mph
• Boone 40 mph
• Marshalltown 39 mph
• Newton 38 mph
• Earlham 37 mph
• Knoxville 33 mph
• Pella 20 mph