A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

The National Weather Service Tucson has issued an air quality alert in effect until midnight for the Tucson Metro Area.

TUCSON, Ariz. (KGUN) — Thick snow is piling up in the Northeast while Southern Arizona is dry even for a desert. KGUN9 was at University of Arizona talking to a National Weather Service meteorologist about the dangers a continued dry winter could bring.

The Phoenix Valley's eastern high terrain could see wind gusts exceed 50 mph, according to the National Weather Service.

Forecasters say we may see some winter weather across the state this coming week. The National Weather Service says we might finally see some winter weather in Arizona! "A low pressure system will move through the region Tue-Wed dropping temperatures to near normal.

Winter weather is heading to Arizona. Here's how to prepare your car for a trip up north in these chilly conditions.

Cooler temperatures are expected to continue across the Tucson area for the rest of the week, including overnight freezing conditions.

A winter storm watch will be in effect Sunday for much of eastern Pennsylvania, including the Poconos. In Carbon and Monroe counties, 6 to 10 inches of snow is possible, the National Weather Service said Friday afternoon when issuing the watch. For Pike and Wayne counties, 5 to 9 inches is possible, the NWS said.

We've seen reports about Los Angeles County being under "fire weather watch" and "red flag warning." What is the difference?

The National Weather Service and European global models show increasing chances of snow in Florida on Monday and Tuesday night.

There's a very slight chance that the very northern tips of a few Florida Panhandle counties could see a wintry mix of rain, sleet and snow.

Phoenix, AZ, often referred to as the Valley of the Sun, is known for its vibrant culture, warm weather, and picturesque desert landscapes. As one of the fastest-growing cities in