Weather Patterns

2. a tropical storm that has winds of about 119 kilometers per hour or higher
3. cut off, as in a front where a warm air mass is caught between two cooler air masses
7. a scientist who studies the cause of weather and tries to predict it
8. a small storm often accompanied by heavy precipitation and frequent thunder and lightning
13. a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch earth's surface
15. a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground.
17. a violent disturbance in the atmosphere
18. a humid air mass that forms over oceans
19. a dry air mass that forms over land

1. a warm air mass that forms in the tropics and has low air pressure
4. to move away from an area temporarily to avoid hurricane conditions
5. a swirling center of low air pressure
6. a line on a weather map that joins places that have the same temperature
9. a "dome" of water that sweeps across the coast where a hurricane lands
10. the boundary where unlike air masses meet but do not mix
11. a cold mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure
12. a high-pressure center of dry air
14. mass a huge body of air that has similar temperature, humidity and air pressure throughout
16. a line on a weather map that joins places that have the same air pressure