When you look at the atmosphere over a long period of time, it appears to move like a fluid. And just like a fluid, the atmosphere often moves in waves.

Another Freeze Watch has been placed into effect tonight through Friday morning. The affected region is known as the Yampa ...

Its dominant features are the smooth, curving patterns of sea level isobars -- lines of equal atmospheric pressure -- which show the central elements of our weather systems: highs, lows (including ...

Wind direction and speed are determined by the patterns of highs, lows and fronts seen on weather maps and by local effects such as seabreezes and thunderstorm downdrafts. Closely spaced isobars ...

One of the scariest things about Hurricane Helene — an "extremely dangerous" Category 4 hurricane barreling up the Gulf coast of Florida on its way to smack into the Big Bend area, according to ...

The WXII 12 First Warning Weather Team has been tracking Oscar in the Atlantic. Oscar hit Cuba Sunday as a hurricane and is no longer a tropical system. It is gradually moving north in the ...

Hurricane Helene has eased to a Category 1 storm, but still poses a huge threat across 12 states. NBC News' Jay Gray reports from Tallahassee, Florida, where residents dodged a direct hit.