What is Relative Humidity?
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
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A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
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 large body of air having similar horizontal temperature and moisture characteristics.
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...