Term
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Definition
| a huge body of air that has similar temperature, humidity, and air pressure throughout. |
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Definition
| Warm, humid air masses that form over the oceans and Gulf of Mexico |
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Definition
| Cool, humid air masses that form over North Pacific and Atlantic Oceans |
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Term
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Definition
| Hot, dry air masses that form only in summer over areas in the SW U.S. and N. Mexico |
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Term
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Definition
| Large air masses that form over N. Canada and Alaska. |
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Term
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Definition
| The area where the air masses meet and do not mix. |
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Term
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Definition
| forms when a rapidly moving cold air mass runs into a slowly moving warm air mass. |
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Term
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Definition
| Forms when a rapidly moving warm air mass collides with a cold air mass. |
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Term
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Definition
| Forms when a warm air mass and a cold air mass meet and no movement occurs. |
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Term
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Definition
| Forms when a warm air mass is caught between two cooler air masses. |
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Term
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Definition
| A swirling center of low air pressure. |
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Term
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Definition
| a violent disturbance in the atmosphere. |
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Term
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Definition
| a tropical storm that has winds of 74mph or greater. |
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Term
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Definition
| heavy rainstorms accompanied by thunder and lightning |
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Term
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Definition
| a sudden spark or energy discharge |
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Term
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Definition
| a rapidly whirling funnel shaped cloud that reaches down from a storm cloud to touch the surface. |
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Term
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Definition
| a sudden, violent flood that occurs within a few hours, or even minutes of a storm |
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Term
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Definition
| An announcement that floods have already been reported or are about to occur. |
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Term
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Definition
| An announcement describing the area in which flooding is possible. |
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Term
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Definition
| scientists who study the causes of weather and try to predict it. |
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Term
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Definition
| a snapshot of conditions at a particular time. |
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Term
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Definition
| lines joining places on the map that have the same temperature. |
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Term
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Definition
| lines joining places on the map that have the same pressure. |
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Term
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Definition
| a warm-water event that occurs once every 2-7 years. |
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Term
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Definition
| to move away temporarily. |
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Term
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Definition
| hurricane conditions are expected within 24 hrs |
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Term
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Definition
| an announcement that hurricane conditions are possible in your area in the next 36 hrs., |
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Term
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Definition
| the most dangerous weather event in the U.S. |
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