What is Clear?
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility. Clear sky. In meteorology, this term is also used when the cloud cover is less than 1/8 during the day or at the observation hour.
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The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...
Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.