Where is tornado alley? What is “La Nina”? What is a “Super Cell”? What does the EF Scale rate? What is left after an EF-5 tornado hits? What month is the most active for tornadoes?

How many people died from tornadoes in 2011:

1. Where did the deadliest tornado hit in 2011?
2. How fast were the tornado wind and how wide was it?
3. Almost all tornadoes begin with a________________________.
4. What does Doppler radar measure?
5. What is lead time?
6. What is a tornado?
7. What are the characteristics of the most extremes tornadoes?”
8. Where is tornado alley?   
9. What is “La Nina”?
10. What is a “Super Cell”?
11. What does the EF Scale rate?
12. What is left after an EF-5 tornado hits?
13. What month is the most active for tornadoes?
14. What types of building are most vulnerable to tornadoes?
15. What does “Tornado Awareness” mean?
16. What is a “Safe Room”?
17. What is a limitation of our current Doppler radar system?
18. How do people react to tornado warnings?
19. What was Dr. Howard Bluestein (Howie) trying to determine with his mobile Doppler radar?