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 low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A cloud of irregular appearance, composed of irregular cloud fragments.
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A large body of air having similar horizontal temperature and moisture characteristics.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...