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 line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...