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1
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The most common form of precipitation
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2
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Water vapor in the form of ice crystals
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3
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Teacher in charge of the ski club
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4
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Cold air masses that form north of 50 degrees latitude
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6
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The percentage of water vapor in the air compared to the maximum it can hold
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8
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Warm air masses that have low pressure
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11
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Type of front that can bring several days of rain or fog
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14
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Clouds that form in flat layers
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15
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A long period of little or no precipitation
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16
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Round pellets of ice
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18
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A swirling center of low pressure spinning counterclockwise in the Northern Hemisphere
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19
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Thin, wispy clouds that are high in the atmosphere
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