Weather Terminology

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Weather

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The state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc.

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Weather Front

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A boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena.

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High Pressure

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A condition where the atmospheric pressure is greater than the surrounding environment, often associated with calm, clear weather.

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Low Pressure

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A condition where the atmospheric pressure is lower than the surrounding environment, often associated with cloudy, rainy, or stormy weather.

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Hail

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Solid precipitation in the form of balls or lumps of ice.

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Sleet

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A form of precipitation consisting of ice pellets, often mixed with rain or snow.

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Rain

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Liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated.

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Snow

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Atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.

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Precipitation

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Any form of water - liquid or solid - falling from the sky, including rain, sleet, snow, and hail.

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Isobar

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A line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.