What are snow squalls and why are they so dangerous?

Snow squalls can happen at a moment's notice and pose extreme danger to motorists who are unfortunate enough to drive into this sudden burst of heavy snow.

Chicago weather: Winter weather returns, heavy snow for NW Indiana

Winter takes hold of the region tomorrow, and we have heavy lake effect snow in the forecast for parts of Northwest Indiana.

Chicago weather: Winter Storm Warning for parts of NW Indiana, SW Michigan

A Winter Storm Warning is in effect for parts of northwest Indiana and southwest Michigan with lake-effect snow on the way. Here's what to know.

Chicago weather: Last mild day before colder air and snow move in

Chicago enjoys one final mild day before a sharp cooldown brings colder temperatures, periodic snow and winterlike conditions through the weekend.

Chicago weather: Colder air and snow chances move in midweek

Much colder air will move in on Wednesday with temperatures falling from the upper 30s in the morning to low 30s during the day.

Chicago weather: Mild days continue but snow and colder temps loom

After more than a week of mild weather, temperatures cool later this week with a chance of lake-effect snow and much colder conditions by the weekend.