What is Heat Index?
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the 'apparent temperature.'
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A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...
A very cold high pressure that originates over the Arctic Ocean.
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...