A new map has revealed that up to 25 percent of Americans live in areas where radon levels are considered unsafe by the ...

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 ...

Another Arctic blast has been forecast to bring frigid air to a large section of the United States later in January.

Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

Frigid air could reach as far south as Central Florida in the coming days, updated forecasts from the NWS suggest.

T​he season's most drastic drop in temperatures is now plowing through the central and eastern states with dangerous wind ...

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

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

Night - Mostly clear. Winds from E to ESE. The overnight low will be 21 °F (-6.1 °C). Sunny with a high of 47 °F (8.3 °C). Winds variable at 4 to 6 mph (6.4 to 9.7 kph). Mostly sunny today ...

Another blast of winter weather is expected in parts of the U.S. in the coming days, including bone-chilling wind in the Northern Plains and unusual snow and ice in the Gulf Coast area.

Night - Partly cloudy. Winds from WSW to SW at 6 mph (9.7 kph). The overnight low will be 28 °F (-2.2 °C). Partly cloudy with a high of 42 °F (5.6 °C). Winds variable at 5 to 9 mph (8 to 14.5 ...