Dark blue cloudy sky

What is Squall Line?

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

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Glossary

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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