Dangerous thunderstorms will threaten the Upper Midwest later today.Noticeably cooler air slicing into an unseasonably warm air mass will spark theintense thunderstorms.
The thunderstorms will erupt this afternoon from the western half of UpperMichigan to northeastern Nebraska. Areas from southern Wisconsin to easternNebraska and extreme northeastern Kansas will be targeted tonight. Tonight'sthreat zone includes the cities of Madison, Wis.; Des Moines, Iowa; and Omaha,Neb.
The strongest thunderstorms will be capable of producing strong winds andlarge hail. The winds could cause damage and overturn semi-trucks, while thehail threatens to break windows. An isolated tornado or two may touch down andcause destruction.
Story by AccuWeather.com Senior Meteorologist Kristina Pydynowski
