A large chunk of Iowa is under a Winter Weather Advisory as colder air, freezing rain, and snow move into the state. The advisory includes the cities of Council Bluffs, Atlantic, Denison, Osceola, Des Moines, Fort Dodge, Ames, Marshalltown, and Waterloo.
National Weather Service Meteorologist Roger Vachalek says motorists should beware of slick spots – especially on bridges and overpasses. “As we head through the evening hours, temperatures will continue to fall and that’s likely to create some slick travel conditions,” Vachalek says. The downward shift in temperatures will also change the rain over to snow across much of Iowa.
Vachalek expects snow accumulations of one to two-and-a-half inches by tomorrow morning. A blast of very cold air will follow. “Back to the northwest of us, daytime temperatures are only in the single digits in North Dakota and about 15 to 20 from South Dakota into north-central Nebraska. That’s the type of air that’s moving our direction,” Vachalek says. “In fact, by Saturday, we’ll have highs only in the teens in the far northwest and low to mid 20s in far southeast Iowa.”
Low temperatures on Saturday night will dip into the single digits and possibly below zero.