Polar air masses are not as cold as arctic air, originating over higher latitudes. Tropical air masses have warm and hot temperatures, originating over the lower latitudes.

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Is Tennessee going to be hit by a polar vortex? State expecting frigid temperatures in the coming week.

POLAR VORTEX COMING: 'Coldest air mass of the season' to engulf NYC next week after snow Sunday. People walk in Midtown Manhattan during freezing cold temperatures on Jan. 8, 2025.

In fact, this polar air mass may bring near record low temperatures,” a NWS forecaster wrote. Snow in the Bay Area is rare. Joan Wayne photographed snow in Napa Valley on Feb. 24, 2023.

A polar vortex is a large area of low pressure and cold air that surrounds the Earth’s poles, according to the National Weather Service. Polar vortexes typically develop in September and ...

A “polar air mass” could last for days in the Charlotte area, mountains and Upstate South Carolina, National Weather Service meteorologists said on Friday. 29,933 people played the daily ...

Learn how the UK's weather is dictated by air masses, depressions and anticyclones with this BBC Bitesize Scotland Geography guide for Fourth Level CfE.

It was a sunny start to the week but from today a polar air mass will sweep over south-east Australia, causing temperatures to plummet by as much as 15 degrees Celsius in 24 hours.

A “hard freeze” from a “polar air mass” descended on Charlotte, the North Carolina mountains and Upstate South Carolina overnight and could last for days, National Weather Service ...