1. 2010-2011 WINTER WEATHER WRAP UP Mark Nelsen

2. WINTER 2010-2011 FUN BEGINNING AND END, BUT “VANILLA” IN THE MIDDLE!

3. THE USA VIEW

7. THE 3 MONTH PERIOD

8. Northwest Winter Temps (the past 100 years)

9. UPPER LEVEL PATTERNS

16. EF2 Tornado (Winds 111-135 mph) EF2 Tornado (Winds 111-135 mph) 2 nd Strongest Oregon Tornado 1950-present (SPC tornado database) December 8, 1993, near Newberg in Washington County June 11, 1968, 30 miles north of Enterprise in Wallowa County Damage Estimated at $1.1 Million 0 Fatalities 2 Minor Injuries 50 Structures Damaged 30+ Large trees uprooted or snapped Path Length 5 miles though tornado was not on the ground the entire length Path Width approximately 150 yards

27. 1940-1995 = PDX 1996-Present = PQR

28. Downtown Data Only

29. Mountain Snowpack @ 5,400’ Courtesy NRCS – Oregon Office

30. Mountain Snowpack @ 3,000’ Courtesy NRCS – Oregon Office

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