Jefferson County Smoke Management Program

The Jefferson County Smoke Management Program is a cooperative effort of Jefferson County Seed Growers and the Jefferson County Rural Fire Protection District, committed to a safe, controlled agricultural field burning season that insures public safety and minimizes, to the greatest degree possible, impacts of smoke on the communities of Central Oregon.

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MORNING AIRCRAFT SOUNDING

Thursday, August 7,2008

 
2500 ft   61 5500 ft 63 Pilot Observations: 

 
3000 ft 63 6000 ft 61 Time: 7:00 am  
3500 ft 66 6500 ft 61 Surface Temp: 60  
4000 ft 68 7000 ft 60 Winds: 6 S  
4500 ft 68 7500 ft 56 Visibility:
5000 ft 66 8000ft 55 N @ 4000: 40 mi  
( all elevations: MSL)   

     Continued haze from California wild fire smoke, especially in the south. Thunderstorms moving in from the south.

We burned 75 acres of wheat in the afternoon-  tall plumes and dispersal to the NNE. No impact to communities.

 N @ 8000: 30 mi
S @ 4000: 35 mi smoke/haze  
S @ 8000: 20 mi smoke/haze  
Pilot Narrative: Wind speeds:

4000ft/ 5000ft/ 6000ft/ 7000ft/  8000ft

  S7       SSE8   SSE9   SSE10   S12-14

6500-8000:turbulence Lightning strikes air to ground in the south (Redmond)

(airport elevation: 2434 ft
Forecast Data Compared to Actual Data

Wednesday, August 6

     

FORECAST ACTUAL
  11am 2pm  5pm   8pm  11am 2pm  5pm   8pm
Temperature: 78 85 88 81 72 80 87 81
Relative Humidity: 21 17 18 27 31 27 20 29
Surface Wind Direction: 040 300 340 340 128 002 019 013
Surface Wind Speed: 5 8 10 8 3 3 5 2
Transport Wind Direction 170 var var 330        
Transport Wind Speed: 3 7 8 15        
Estimated Mixing Height: 2000 6000 6000 1500        
Ventilation Index: 6 42 48 23