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 formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.