What is Alto?
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus and altocumulus. These clouds are often associated with changing weather patterns.
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A large body of air having similar horizontal temperature and moisture characteristics.
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...