What is a snow squall?

You may have gotten one of those loud mobile alerts telling you about something called a "snow squall." So what the heck is it and why is it so dangerous? Glad you asked.

NY Weather: Strong, damaging winds expected through Friday morning

A powerful storm that is sweeping through the New York area is expected to have many potentially dangerous effects, especially on Long Island and southeastern Connecticut where winds of 30 mph to 40 mph with gusts up to 65 mph could hit through late Friday morning.