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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A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.
The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...