Chicago, IL – As temperatures plunge early Sunday following Saturday’s snowfall, forecasters are warning Illinois drivers of a potential flash freeze — a quick freeze that can turn wet pavement into a sheet of invisible ice within minutes.
According to the National Weather Service, flash freezes often occur when skies clear and temperatures drop sharply overnight, catching morning commuters off guard. These “sneaky” winter hazards can make even treated roads slippery and increase crash risks, especially on major routes such as I-90, I-94, and Route 59.
On icy pavement, a car traveling 35 mph can require more than 600 feet to stop — roughly six times the normal distance on dry roads. Drivers are urged to maintain extra space, slow down well before stoplights, and avoid cruise control.
Officials say that even a brief dip below freezing after snow or rain can trigger flash-freeze conditions, particularly on bridges, ramps, and shaded roadways.
“Even if it’s not snowing, wet roads can freeze quickly overnight,” the NWS noted. “Leave plenty of room between you and other vehicles.”
Motorists should plan for slower travel times Sunday morning and use extreme caution through midday as residual moisture freezes.
