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 ...

AUSTIN (KXAN) — Meteorologists study the upper levels of the atmosphere to better understand troughs and ridges, which helps them predict both day-to-day weather conditions and long-range patterns.

An upper-level trough of low pressure will persist over the region through Friday night, bringing gusty winds and cooler temperatures. While dry weather is expected, temperatures are anticipated to ...

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 ...

An isolated area of Maine could see up to a foot of snow due to a Norlun Trough. Maine's Total Weather meteorologist Colleen Hurley explains how a trough like this forms. Holiday weather forecast: ...

The weather in urban areas continues cool in the early mornings, yet the country will soon move on to warmer conditions as the winter season passes. In the capital city of Santo Domingo, morning lows ...

It's another hot day here in the Coachella Valley. It was a humid start to the day, but moisture levels have fallen somewhat throughout the afternoon. The persistent area of high pressure continues ot ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. When winds in the upper atmosphere, say ...

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 ...

Many in Maine will have a white Christmas thanks to a winter storm that brought several inches of snow to many and more than a foot of snow to some. The National Weather Service reported the morning ...