Colder air will surge into Iowa overnight. The colder air will bring the strongest wind speeds into the state along with periods of snow showers, some of which will produce brief busts of heavier snow. The combination of strong wind producing blowing snow and snow showers will cause significant reduction in visibility. Drifting snow across roadways will also occur and all of these conditions will make travel extremely dangerous.
A strong northwest wind will move into the area along with snow showers. The combination of strong wind and falling snow will produce blowing and drifting snow and reduce visibility. A winter weather advisory (purple) has been issued until 6pm Monday. A blizzard warning (red) has also be issued until 6pm Monday.
A northwest wind will increase to 25 to 30-mph with gusts to 40-mph. Visibility will be reduced to below a half mile at times, especially in open areas. Strong wind and falling snow will reduce visibility to a half mile at times, especially in open areas. The wind may also produce drifting snow and the combination of reduced visibility and drifting snow will make travel very difficult.