Heavy downpours will move into Chicago and central Cook County as the morning commute continues, weather radar showed.

"Out to the west, a high risk of severe weather in Iowa, western Wisconsin and Minnesota," NBC 5 Storm Team Meteorologist Kevin Jeanes said, of the potential weather Monday. Jeanes added that ...

A big factor is the disruptions in the polar vortex, even as the “polar vortex season” is winding down, according to NBC 5 Meteorologist Kevin Jeanes. When the polar vortex begins to wobble ...