Detailed discussion of the February 2-12, 2007 massive lake effect event off the east end of Lake Ontario, featuring details, analysis, photos and more.

1. Lake Ontario Unleashed: A Recap of the Historic February 2-12 Lake Effect Snow Event Matt Lanza, Meteorologist , WKTV- Utica, NY Eastern U.S. Weather Conference III: June 23, 2007

9. Geography Lesson

10. Geography Lesson

14. Synoptic Setup for LES Event Alberta Clipper swings through Synoptic snows wind down at 00Z.

15. 00Z February 3 rd (Friday, 7 PM) Alberta Clipper dragged a cold front through Great Lakes Anomalously cold 850 mb temperatures driven south and eastward with Polar Vortex; -10°C was threshold for LES Deep synoptic moisture was in place

16. 12Z February 3 rd (Saturday, 7 AM) Deepening Polar air mass over Lakes, as 850 mb temps fall to -18°C over Lake Ontario. Deep synoptic moisture remained in place Secondary push of Polar air seen with low pressure over U.P. of Michigan

17. 12Z February 4 th (Sunday, 7 AM) Shortwave trough passed through Deepening 850 mb cold, as temps fall to -23°C Synoptic moisture in place across all the Lakes Core of upper level cold laid out near Lakes

18. 00Z February 5 th (Sunday, 7 PM) Another weak shortwave crossed over Lakes Winds shifted aloft from WSW to more Westerly direction 850 mb cold continued to deepen with temperature range of -28°C to -24°C across the Lakes Synoptic moisture continued to reload across the Lakes

19. 12Z February 5 th (Monday, 7 AM) Final major shift occurred, shifting winds into broad west and west-northwest direction; 850 mb cold continued to hold Synoptic moisture continued to remain deep and in tact

21. February 2

22. February 3

23. February 4

24. February 5

25. February 6

26. February 7

27. February 8

28. February 9

29. February 10

30. February 11

31. February 12

33. Results… Point Rock, NY, February 6

34. Results… Point Rock, NY, February 6

35. Results… Westernville, NY, February 6

36. Results… Westernville, NY, February 6

37. Results… Lake Delta, NY, February 6 Lawn Chairs!

38. Results… Lake Delta, NY, February 6

39. Results… Westdale, NY, February 7

40. Results… Turin, NY, February 10

41. Results… Mexico, NY

42. Results… Oswego, NY

43. Results… Oswego, NY

44. Results… Mexico, NY

45. Results… Camden, NY

46. Results… Camden, NY

47. Results… Williamstown, NY

48. Results… Viewer in Deerfield, NY

50. Official Snowfall Map

51. Matt’s Unofficial Snowfall Map

60. Thank You! Questions or comments: mlanza@wktv.com