What is Mesocyclone?
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with a funnel cloud or tornado cloud beneath it and detectable on Doppler radar.
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The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
A very cold high pressure that originates over the Arctic Ocean.
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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.