What is Frost?
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential damage to plants and crops.
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A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....