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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An instrument for measuring atmospheric pressure.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...