1. Weather Hydrologic Cycle – The driving engine Evaporation Transportation Condensation Precipitation

2. Three Cloud Types Cumulus Stratus Cirrus

3. Weather: Clouds Cirrus Clouds

4. Weather: Clouds

7. Cumulus Clouds

8. Weath er: Clouds

10. Stratus Clouds

11. Weath er: Clouds

14. Weather Cloud formation Convection Geographic barriers (mountains) Meeting of air masses (fronts) Cold & warm Figure 23.10 & 23.11 Condensation nuclei

15. Weather Precipitation Liquid or solid form Must fall !!!!! Formation Coalescence Ice crystals

16. Weather Air Masses Consist of the same temperature and moisture content Takes on the characteristics of its point or origin

17. Weather Fronts The boundary formed between two air masses Cold Warm Fronts do not mix

18. Weather Storms Thunderstorms Convective Frontal Indicates severe instability in the upper atmosphere Hail Tornadoes Directly associated with thunderstorms Significant instability Fujita Scale Palm Sunday April 11, 1965

19. Fujita Scale for Tornado Strength

20. Palm Sunday - April 11, 1965 47 Tornadoes in 11 hrs. 3 rd deadliest outbreak 12:56 pm first touchdown 256 deaths IN – 137 deaths, 1,200 injuries 62 Elkhart Co. 17 Howard Co.

21. Palm Sunday - April 11, 1965

23. Twin funnel clouds: Elkhart, IN April 11, 1965 10 fatalities

24. Palm Sunday - April 11, 1965 Greentown, IN

25. Palm Sunday - April 11, 1965 Kokomo, IN Downtown Area

26. Palm Sunday - April 11, 1965 Goshen, IN

27. Palm Sunday - April 11, 1965 Lake Pleasant, IN

28. Palm Sunday - April 11, 1965 Toledo, OH

29. Palm Sunday - April 11, 1965 Toledo, OH

30. Weather Hurricanes & Typhoons Significant low pressure cell Tropical depression Tropical storm Develop off the coast of Africa Feed of the warm ocean water

31. Weather Understanding a Weather Map