From nearly invisible black ice to freezing rain and sleet, here's how common winter weather hazards form, why they're so dangerous.

Meteorologist Elliot Wilson talks about freezing rain and how it forms. He also talks about what impacts we can expect around our area this weekend.

Freezing fog is an uncommon phenomenon that can impact your visibility and travel. Here's what it is and why it forms. Also, when will it dissipate?

The phrase "wintry mix" becomes especially popular whenever we get a one-two combination punch of freezing temperatures and precipitation.

An extreme cold warning is issued when extremely dangerous cold conditions or wind chill values are expected or occurring. If you are in an area with an extreme cold warning, avoid going outside.

Learn what frost quakes are, why they happen, and why they sound like sudden booms.

32-45 degrees Fahrenheit: You can take your dog for a walk, but consider limiting it to 30 minutes. 20-32 degrees Fahrenheit: It may be OK to take your dog for a walk, depending on its breed and size. Limit walks to 15 minutes.

Sure, Chicago is used to cold winters -- but an extreme cold warning with wind chill values as between -30 and -40 degrees could lead to frostbite, dead car batteries, icequakes with exploding trees and burst pipes inside the home.

What is the best temperature for a thermostat in the winter? The U.S. Department of Energy recommends this setting.

Many in the U.S. faced another night of below-freezing temperatures and no electricity after a colossal winter storm heaped more snow Monday on the Northeast and kept parts of the South