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 tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
The narrow region between 35-40 ° N and S latitudes in the Northern and Southern Hemispheres, lying between the tropical...
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.