Another round of hazardous winter weather is on the way for Iowa, with a high-wind event expected to bring renewed travel problems late tonight into early Wednesday.
Forecasters say northwest winds will strengthen through the evening, with gusts reaching 50 to 60 mph overnight. Those strong winds are likely to whip up existing snowpack, causing blowing and drifting snow that can quickly reduce visibility and make roads slick again — even in areas that were cleared earlier.
The most significant impacts are expected from about 9 p.m. tonight through 9 a.m. Wednesday. Conditions could be at their worst between 1 a.m. and 6 a.m., raising concerns for the Wednesday morning commute.
Northern Iowa is expected to see the greatest risk for dangerous blowing and drifting snow, especially in open and rural areas where wind can push snow back across highways. Brief whiteout pockets are possible. A few snow showers may also move through northeastern Iowa overnight, which could further lower visibility for short periods.
Beyond travel issues, the strong winds may also cause scattered power outages and bring down tree limbs. Residents are encouraged to secure outdoor items that could be blown around during the night.
Drivers who must be on the road overnight or early Wednesday are urged to slow down, allow extra stopping distance, and be prepared for sudden visibility changes. Checking road conditions before heading out is strongly recommended. Winds should gradually ease by late Wednesday morning, though drifting snow could keep some roads hazardous into the afternoon.
