1. Weather and Weather Forecasting
Current Weather
Finish Chapter 6
Lifting Mechanisms
Fronts and Wave Cyclones
Weather Forecasting
For Next Class: Read Chapter 8

2. Atmospheric Temperatures and Stability
Figure 7.18

3. Stable vs. Unstable Air

4. Three Examples of Stability
Figure 7.19

5. What is Rime Ice? 5

6. Rime Ice
A coating of tiny, white, ice particles caused by the rapid freezing of supercooled water droplets on impact with an object.

7. Rime Ice on Mt. Mitchell 7

8. Rime Ice on Beech Mountain

9. Rime Icing on
Grandfather
Mountain

10. Heavy Rime Icing on Mt. Washington10

11. Whiteman & Garibotti (2013), BAMS

12. Whiteman & Garibotti (2013), BAMS

13. Atmospheric Lifting Mechanisms
What are the four mechanisms of atmospheric lifting?

14. Atmospheric Lifting Mechanisms
Convergent Lifting  
Convectional Lifting  
Orographic Lifting  
Frontal Lifting (Cold and Warm Fronts)  

15. Atmospheric Lifting Mechanisms
Figure 8.6

16. Moisture Droplets
Figure 7.20

17. Raindrop and Snowflake Formation
Figure 7.21

18. Local Heating and Convection
Figure 8.7

19. Orographic Precipitation
Figure 8.9

20. Orographic Patterns
Figure 8.10

21. NC Precipitation
Where is the wettest place in North Carolina? Driest?

22. Driest Weather Station 37.32 inches (annual average)
Asheville
Driest Weather Station inches (annual average)
Lake Toxaway
Wettest Weather Station inches (annual avg.)
EPA-NIEHS Climate Change Workshop, June 17, 2011

23. Average Annual Precipitation

24. Air Masses
Figure 8.2 24

25. Lake-Effect Snowbelts
Figure 8.5 25

26. 25 Jan 2006 Radar
40+ cm in SE WV

27. Life Cycle of a Midlatitude Cyclone
Cyclogenesis
Open stage
Occluded stage
Occluded front
Stationary front
Dissolving stage
Storm tracks 27

28. Midlatitude Cyclone
Figure 8.14 28

29. Midlatitude Cyclone
Figure 8.15 29

30. Midlatitude Cyclone
Figure 8.15 30

31. Average and Actual Storm Tracks
Figure 8.16 31

32. 32

33. 33

34. 34

35. 35

36. 36

37. 37

38. 38

39. 39

40. 40

41. 41

42. 42

43. 43

44. 44

45. 45

46. 46

47. 47

48. Weather Forecasting
Figure 8.17 48