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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
A cloud of irregular appearance, composed of irregular cloud fragments.
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
An instrument for measuring atmospheric pressure.
The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...
A large body of air having similar horizontal temperature and moisture characteristics.
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...