Latest look at radar shows a large band of snow this evening settling from northeast Iowa all the way through Nebraska. A narrow mesoscale band is setting up within this roughly from Cedar Rapids to Marshalltown to Atlantic, westward into the Hastings area. Areas along this band will receive some of the higher totals tonight. Road conditions continue to deteriorate across southwest Iowa where the heaviest snow has fallen so far, with portions of Interstate 80 west of Des Moines completely covered. Tow bans remain in effect for Cass, Pottawattamie, Monona, Shelby, and Harrison counties in west central Iowa and Polk, Story, and Dallas in central Iowa. This band will continue to shift east-to-northeast tonight, and should be clear of the area by mid-morning tomorrow.
Short-term models have been painting a very narrow corridor of over four inches from the Iowa City area towards Shenandoah. The area we have outlined is a bit of a rough estimate and may be even narrower than outlined. Generally, two-to-four inches is expected from east central to southwest Iowa, perhaps with some amounts up to six inches. Outside of this, southeast Iowa and most points north of Interstate 80 will only receive a few inches. A Winter Weather Advisory remains posted for southern Iowa until tomorrow morning for this reason.
Slick roads and reduced visibilities will result in minor-to-moderate travel impacts tonight in these areas, especially along Interstate 80 east of Des Moines and Interstate 35 south of Des Moines. Please make sure to take it slow if you must travel tonight.
Stay tuned to the Iowa Weather Network for the latest updates!