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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Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.