The first storm system will slide across northern Iowa Tuesday afternoon with light snow working into northwest Iowa by midday and the risk quickly pressing east into north central and northeast Iowa through the afternoon and into the evening with light accumulations. Confidence continues to grow for a larger storm system later Wednesday through Thursday. The current thought line is rain works into southern Iowa late Wednesday morning and the precipitation expanding to the north through the afternoon where a wintry mix is likely from central and off into northern Iowa. The activity continues overnight and as cold air works in on the backside, all precipitation will transition to snow later Thursday morning before the system exits by midday Thursday. Snow accumulations will be the heavy side across northern Iowa and moderate ice amounts across northeast Iowa. On top of that, the wind will be gusty on Wednesday with northeast winds sustained 10-25 MPH and gusts 25-40 MPH and the highest gusts across the northwest half of Iowa. Thursday will have even stronger gusts as the surface low moves directly over the state. Below is a look at the probability for at least 6″+ of snow Wednesday through Thursday.
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