What is Hail?
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
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An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
A very cold high pressure that originates over the Arctic Ocean.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...