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 continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...
Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.