A moist airmass and light winds later tonight over western and north central Iowa will combine for widespread fog development. The fog is expected to become dense overnight and last through mid morning Monday across the area.
Visibility of one quarter mile or less can be expected, especially between 2 am and 8 am Monday morning. Travel may be difficult and much slower due to very low visibilities. Allow extra time to reach your destination safely. Follow fog safety rules and use low beam headlights. Check the latest visibility in your area prior to heading out overnight and early Monday morning.
Make sure to follow the Iowa Storm Chasing Network for the latest updates.