Severe Weather

4. Most injuries and deaths from tornadoes are caused by flying _____.
6. As water vapor condenses to form a cloud, the _____ heat makes the air in the cloud warmer than the air outside the cloud.
8. The intensity of tornadoes is measured on the _____ Scale
11. Thunderstorms can form individually or in _____ lines along a cold front.
12. In _____ thunderstorms, the downdrafts are so intense that when they hit the ground it sends warm air from the ground upward into the storm. The warm air gives the convection cells more energy.
14. So much energy collects in cumulonimbus clouds that a huge release of electricity, called _____, may result.
16. _____ form when ground temperatures are high, ordinarily in the late afternoon or early evening in spring and summer
18. Tropical cyclones are also known as _____.
19. Storm _____ occurs as the storm's low pressure center comes onto land, causing the sea level to rise unusually high.
20. are greater than 56 kmh (35 mph); 72 kmh (45 mph) for a severe _____.

1. A _____ is a system of winds rotating counterclockwise in the Northern Hemisphere around a low pressure center.
2. Tornadoes, also called _____, are fierce products of severe thunderstorms
3. Mid-latitude cyclones are especially fierce in the mid-Atlantic and New England states where they are called ______, because they come from the northeast.
5. As temperatures increase, warm, moist air rises. These _____ first form cumulus and then cumulonimbus clouds.
7. Mature thunderstorms produce gusty winds, lightning, heavy precipitation, and _____.
9. _____ form at the front of severe thunderstorms.
10. Hurricanes are assigned to categories based on their wind speed. The categories are listed on the _____-Simpson hurricane scale
13. Mid-latitude cyclones are the main cause of _____ storms in the middle latitudes.
15. Lightning heats the air so that it expands explosively. The loud clap is _____.
17. Thunderstorms form in the spring where where _____ tropical (mT) and continental polar (cP) air masses meet.
21. Winds at the top of the stratosphere blow the cloud top sideways to make the _____ shape that characterizes a cloud as a thunderhead.