Dark blue cloudy sky

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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Glossary

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.