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What is Weather?

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which is why it can be difficult to forecast.

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Glossary

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...