A “roll cloud” spotted off the coast of Portugal looked like something out of a movie. Here’s the science behind it.

The warm air is forced to rise, cool, and condense into stratus clouds. Orographic lifting - When moist air is forced to ascend over a mountain range, it cools as it rises and if the conditions ...

WATCH: Cool breeze again Friday, clouds tooSorry, this video is not available, please check back later.

These one-of-a-kind Lenticular clouds have fooled the best of ’em over the years — including an airborne pilot who saw the disk-shaped object by Mount Rainier of Washington in 1947.

High pressure is providing a cool northeasterly flow through the holiday weekend, with temperatures only reaching the mid-60s, about 10 degrees below normal. Clouds became prominent this afternoon ...

After a cool start to Tuesday with plentiful sunshine, plan for clouds to increase late in the day ahead of our next weather maker that will bring rain.

Today will be cool with gradually decreasing clouds, according to the National Weather Service in Wilmington.

City councilors in Alameda, Calif., find themselves in the middle of a global controversy over whether to try cool the planet by making clouds brighter.

LAS VEGAS — Dr. Martin Luther King, Jr. Day will see more high clouds than sunshine, but dry and calm conditions are expected. We wake to the upper 30s and low 40s, with low 50s by late morning ...

Today will be cool with increasing clouds and light winds, according to the National Weather Service in Wilmington. Highs will be around 58 degrees.