| Term | Definition |
|---|
| air mass | A large body of water in the lower troposphere that has similar characteristics throughout. |
| blizzard | A winter storm characterized by temperatures of 27 degrees Celsius or lower, and falling or blowing snow. |
| cold front | The boundary between advancing cold air mass and the warm air mass it is displacing. |
| hurricane | A large, rotating storm of tropical origin with sustained winds of at least 119 kilometers per hour. |
| lightining | A discharge of electricity form a thunder clout to the ground, to another cloud, or to another spot in the cloud within itself. |
| mterorology | The study of processes that govern Earths atmospere. |
| occluded front | The front that is formed when a cold front overtakes a warm front and displaces it upward in an area of low pressure. |
| saffir-simpson scale | The 1-to-5 scale used to rate a hurricane's intensity and estimate potential property damage and flooding. |
| squall line | A line of thunderstorm that occurs ahead of a front,often preceded by strong winds. |
| station model | A compact expression of weather information for an area, including temperature, dew point, weather condidtions, wind speed and direction, barometric pressure, and cloud cover. |
| stationary front | The boundary between two dissimilar air masses, neither of which is displacing the other, usually resulting in cloudy weather and mild temperatures. |
| storm surge | The rapid ride in water level along the coast as a hurricane or other tropical storm approaches. |
| super cell | A very large, single-cell thunderstorm with particularly strong updrafts. |
| tornado | A violent, rotating column of air that extends down from dark clouds and moves overland in a narrow, destructive path. |
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