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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Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A very cold high pressure that originates over the Arctic Ocean.