We hear about troughs and ridges all the time in our daily forecasts. These features high in the atmosphere are responsible for the vast majority of the weather we experience down here on the ground.

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. In meteorology, we call the low points in ...

A persistent wildfire and fire weather threat is impacting portions of the Southwest and Central Plains this week due to an upper-level trough in the atmosphere. That trough is allowing the jet stream ...