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 ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
The branch of science dealing with the laws of motion of air or other gases.
Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...