PORTLAND, Ore. (KOIN) – Let’s talk about air masses! Wait, wait, wait: what exactly is an air mass? Think about a large body of air with similar temperature and moisture. These air masses typically ...

If you hear a meteorologist, say stormy weather is expected, we didn't just pull it out of thin air. Instead, we looked at weather models predicting the future. Weather forecasting can be difficult ...

Temperatures are heading down in Tennessee and much of the South. Are we in for a polar vortex? And just what is that? "The atmosphere is making up for lost time in terms of wintry conditions and snow ...

LOUISVILLE, Ky. — When we are forecasting, we are looking at the movement of different air masses, but what is an air mass and the different types of air masses? An air mass is large body of air with ...

A “polar air mass” could last for days in the Charlotte area, mountains and Upstate South Carolina, National Weather Service meteorologists said on Friday. A “hard freeze” from a “polar air mass” is ...

SPOKANE, Wash. — Winter in Spokane this season hasn't been terribly cold. With the lowest temperature only been 15 degrees this season, it's been extremely manageable. And compared to the winter's ...

It's all thanks to a weather pattern called the "Siberian Express". As the name implies, the Siberian Express refers to air masses that start in northern Russia and end up in the Lower 48, driving ...

NEW YORK (1010 WINS) – This week’s frigid weather will be followed by a brief reprieve of warmer temps this weekend—but even more extreme cold is coming next week after a winter storm Sunday, ...

SAN FRANCISCO (KRON) — A polar air mass is forecast to blow into the San Francisco Bay Area on Thursday and possibly dust local mountain peaks with snow. Tuesday’s sunny and warm weather will ...

Sunny and seasonable this weekend. A polar air mass moves into Alabama next week and wind chills drop near freezing. Voices: If Donald Trump demands that Britain chooses between EU and US, there is ...

If you hear a meteorologist, say stormy weather is expected, we didn't just pull it out of thin air. Instead, we looked at weather models predicting the future. Weather forecasting can be difficult ...