What is Relative Humidity?
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
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Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...