What is Lightning?
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or between a cloud and the ground.
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A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...
A very cold high pressure that originates over the Arctic Ocean.
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
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 term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...