Des Moines, Iowa – Snow squalls may rapidly create dangerous driving conditions on roads across Iowa and Illinois tonight into Friday.
According to the National Weather Service Weather Prediction Center, snow showers and snow squalls are expected to develop behind an arctic cold front moving southeast through the Plains and Upper Midwest. Both Iowa and Illinois are included in the identified snow squall risk area, with the potential for multiple rounds of brief but intense snow.
Snow squalls are especially hazardous because they can produce heavy snowfall rates, gusty winds, and near-zero visibility in minutes. Roads that appear clear may quickly become icy, particularly on interstates, rural highways, bridges, and overpasses.
Forecasters warn that visibility can drop suddenly, increasing the risk of spinouts and multi-vehicle crashes. Travel impacts are most likely during overnight hours and Friday’s morning and evening commutes, when traffic volumes are higher.
Outside of snow squalls, strong winds are also expected, with gusts potentially reaching 40 to 50 mph across parts of Iowa and Illinois. Blowing snow may further reduce visibility, and high-profile vehicles could experience additional travel difficulties.
Drivers who encounter a snow squall are advised to slow down gradually, turn on headlights and hazard lights, and avoid sudden braking. Delaying travel is recommended when possible until conditions stabilize.
The snow squall threat continues through Friday night, easing as the cold front moves east of the region.
