Clouds need two essential ingredients to form, and both must be present simultaneously for the process to begin. There are two ingredients needed for clouds to form: water and nuclei. The first ...

Satellites soaring high above Earth have revealed exactly how wispy clouds are created by the giant plumes of ash belched upwards in a volcanic eruption. Volcanoes play a vital role in the cycles ...

Clouds form when water vapor—an invisible gas in the atmosphere—sticks to tiny floating particles, such as dust, and turns into liquid water droplets or ice crystals. In a newly published study, we ...

You wouldn't think that clouds and snow floating around in the sky get help from bacteria near the ground, but those tiny organisms can lend a helping hand in getting clouds to form. First off, let’s ...

With the threat of storms in the forecast almost daily this week, many may be keeping an eye on the horizon. While in the ...

NORFOLK, Va. — Technically called “cumulonimbus flammagenitus,” pyrocumulonimbus clouds are a rare weather phenomenon caused by intense heat. These towering clouds form when extreme heat from a ...

VIRGINIA BEACH, Va. — An impressive shelf cloud formation was seen over much of Hampton Roads late on Saturday afternoon. That might have people wondering what exactly causes these visually stunning ...

Clouds bright enough to see at night are not as hard to find as they once were. These so-called night-shining clouds are still rare — rare enough that Matthew DeLand, who has been studying them for 11 ...