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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...