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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A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...