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 sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...