In Denver, the National Weather Service issued a snow squall warning Tuesday morning for parts of the metro area. A snow squall brings sudden whiteout conditions that often last less than an hour.

PennDOT, the National Weather Service and more showed off their virtual reality snow squall simulator on Jan. 23 in Dauphin County. It was developed to study drivers' reactions during a squall.

When severe weather strikes, you might hear a meteorologist refer to a squall line. They are commonly seen in spring as well as other times of the year and you should take the dangers they pose ...