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What is Celsius?

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero and the evaporation point as 100.

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Glossary

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A very cold high pressure that originates over the Arctic Ocean.

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.