What is Acid Rain?

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...