Hot weather has paired with low humidity and high winds for the past twelve days. There is good news on the way: a low-pressure trough is nearly here and will cool temps into the weekend. Tuesday ...

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 ...

PORTLAND, Ore. (KOIN) – Wednesday is our first 80-degree day of May with a little help from our friend, the thermal trough. When the air warms up in mass and rises, it will create lower pressure near ...

Live radar shows a low-pressure system, positioning the jet stream around us rather than over us. Low-pressure troughs invite turbulent weather into the region, responsible for passing showers over ...

Add Yahoo as a preferred source to see more of our stories on Google. An isolated area of Maine could see up to a foot of snow due to a Norlun Trough. Maine's Total Weather meteorologist Colleen ...