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What is Acid Rain?

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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Glossary

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.