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 weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....