1. USPS ® Weather Course Supplemental Slide Set Thunderstorms & Tornadoes

2. Supercell Copyright National Oceanic and Atmospheric Administration.

3. Supercell Copyright National Oceanic and Atmospheric Administration.

4. Supercell Copyright National Oceanic and Atmospheric Administration.

5. Isolated Severe Thunderstorm Copyright National Oceanic and Atmospheric Administration.

6. Severe Thunderstorm Copyright National Oceanic and Atmospheric Administration.

7. Thunderstorm Outflow Copyright National Oceanic and Atmospheric Administration.

8. Wall Cloud Copyright National Oceanic and Atmospheric Administration.

9. Wall Cloud Copyright National Oceanic and Atmospheric Administration.

10. Wall Cloud with Tail Cloud Copyright National Oceanic and Atmospheric Administration.

11. Circular Base of Rotating Wall Cloud Copyright National Oceanic and Atmospheric Administration.

12. Approaching Thunderstorm Copyright National Oceanic and Atmospheric Administration. Lead Gust Front & Shelf Cloud

13. Approaching Thunderstorm Copyright National Oceanic and Atmospheric Administration. Lead Gust Front & Shelf Cloud

14. Turbulent Gust Front Clouds Copyright National Oceanic and Atmospheric Administration.

15. Funnel Cloud Approaching Ground Copyright National Oceanic and Atmospheric Administration.

16. Developing Tornado Copyright National Oceanic and Atmospheric Administration. Early Stage Development Continues Mature StageVery Mature Stage

17. Union City Tornado - 1973 Copyright National Oceanic and Atmospheric Administration.

18. Arcadia Tornado - 1974 Copyright National Oceanic and Atmospheric Administration.

19. Lakeview, Texas - 1977 Copyright National Oceanic and Atmospheric Administration.

20. Mayfield Tornado - 1977 Copyright National Oceanic and Atmospheric Administration.

21. Shamrock Tornado - 1977 Copyright National Oceanic and Atmospheric Administration.

22. Wichita Falls Tornado - 1979 Copyright National Oceanic and Atmospheric Administration.

23. Tornado with Associated Dust Cloud Copyright National Oceanic and Atmospheric Administration.

24. “Rope” or Decay Stage of Tornado Copyright National Oceanic and Atmospheric Administration.

25. Project VORTEX Copyright National Oceanic and Atmospheric Administration.

26. Waterspouts in the Bahamas Copyright National Oceanic and Atmospheric Administration.

27. Waterspout off Florida Keys - 1969 Copyright National Oceanic and Atmospheric Administration.