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 ...

Have you ever looked up at the clouds in the sky and wondered how they form? Understanding cloud formation is really important for studying weather patterns and making accurate forecasts. Those clouds ...

SEATTLE — Even a clear sky contains layers of wet and dry air, that is, layers with different humidities. You can’t see these layers unless the humidity is high enough for the moisture in the layer to ...

High in the atmosphere of Venus, a swirl of sulfur-containing clouds blankets the planet. Dark spots in these clouds correspond with areas of high ultraviolet light absorption, but researchers have ...

An astronaut aboard the International Space Station took this oblique photograph of polar mesospheric clouds during one of the 16 sunsets visible from the station each day. Polar mesospheric clouds, ...

Heat from the recent wildfires raging in northern Minnesota is so intense, that under the right circumstances, they can actually create storms in the atmosphere. It's not uncommon to see cumulus ...

Weather forecasting can often seem as arcane as gazing into a crystal ball, but the skill lies in analyzing current conditions, identifying weather patterns and applying climatology to produce a ...