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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Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...