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| An instrument used to measure wind speed. |
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| Automated machine attached to an elevated structure. |
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| An intsrument used to measure air pressure. |
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| Very cloudy, with no sun showing. |
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| An instrument used for measuring rainfall. |
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| The boundary zone of an advancing cold-air mass as it replaces warmer air. |
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| The gently sloping advancing edge of a warm air mass that displaces colder air, bringing a temperature increase and heavy rain where the front makes contact with the ground. |
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| measurement that compares the amount of water vapor in air with the amount the air can holdat a certain temperature. |
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| The temperature at which a volume of air cannot hold any more water vapor. |
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| An air mass of lower pressure. |
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| The boundary between warm and cold air masses. |
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| A large body of air having similar properties of weather conditions. |
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| A large body of air with temperature, pressure, and moisture unifrom throughout its mass but changed by the environment through which it passes. |
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