The coldest air of the season will descend across the U.S. this weekend and early next week, bringing subzero wind chills ...

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...

as seen in this July 8 air temperature map (left). The corresponding image from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on Aqua on the right shows smoke from lightning ...

Systems of atmospheric pressure can shape Texas weather as deadly hurricanes or as scorching heat domes, depending on whether ...

The Frost and Freeze map shows where frost cant be expected and where temperature are forecast to fall below 32 degrees F. Frost is a solid deposition of water vapor from saturated air.