Sioux Falls, SD – The National Weather Service in Sioux Falls is warning drivers to be alert for rapidly developing icy spots across South Dakota tonight as temperatures drop sharply into the teens.
According to the NWS mid-afternoon update, winds helped dry roads earlier in the day, but lingering moisture could refreeze quickly after sunset. This “flash freeze” effect can make roads that appear wet actually turn to ice within minutes.
Meteorologists say the risk increases overnight into early Sunday, particularly on bridges, overpasses, and shaded stretches of highway. Drivers are urged to slow down, avoid using cruise control, and leave extra distance between vehicles.
“Use caution on the roads overnight,” the NWS stated. “A road may appear to be wet but could actually be ice.”
The alert extends through early Sunday morning as cold air settles across eastern South Dakota, with morning lows expected in the teens and wind chills in the single digits.
Residents planning early travel Sunday are advised to check updated road conditions through 511 South Dakota and monitor forecasts at weather.gov/siouxfalls.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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