1. Cloud Formations

3. Cirrus

5. Cirrus uncinus

7. Cirrocumulus stratiformis

9. Cirrocumulus undulatus

11. Cirrostratus

13. Altocumulus

15. Altocumulus lenticularis

17. Altocumulus castellanus

19. Altocumulus undulatus

21. Altostratus

23. Cirrus and Altostratus undulatus

25. Stratocumulus

27. Stratocumulus cumulogenitus

29. Stratocumulus lenticularis

31. Stratocumulus castellanus

33. Stratus fractus

35. Stratus opacus uniformis

37. Nimbostratus virga

39. Cumulus humilis

41. Cumulus mediocris

43. Cumulus congestus

45. Cumulonimbus calvus

47. Single-cell Cumulonimbus incus

49. Cumulus pileus

51. Cumulonimbus arcus

53. Stratospheric nacreous

55. Mesospheric Noctilucent

57. Translucent wave cloud

59. Fallstreak hole cloud

61. Mammatus cloud

63. Roll cloud