Dark blue cloudy sky

What is Relative Humidity?

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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Glossary

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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...