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 situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...