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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

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

A large body of air having similar horizontal temperature and moisture characteristics.

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...