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, July 29   2010

 

 
2500 ft   59 5500 ft 64 Pilot Observations: 

 
3000 ft 60 6000 ft 62 Time: 7:00 am  
3500 ft 60 6500 ft 60 Surface Temp: 59  
4000 ft 61 7000 ft 59 Winds: 5 S  
4500 ft 61 7500 ft 59 Visibility:
5000 ft 62 8000ft 57

N@4000ft:

 20-25 mi heavy smoke
( all elevations: MSL) :

No fields were burned yesterday.

 N@8000ft 15-20 mi heavy smoke

S@4000ft:

 18-20 heavy smoke  

S@8000ft:

 15-18 mi heavy smoke  
Pilot Narrative: transport winds:

 

Smoke layer goes all the way up (could not see over top) especially heavy to south- several plumes visible in each direction. No thunderstorm clouds- high layer of broken clouds.

4000 ft/ S 6-8   6000ft/SSW 7-9   

8000 ft/ SSW 10-12

Madras Airport Elev. 2450 ft. MSL

Forecast Data Comparison
July 28      FORECAST ACTUAL
  11am 2pm  5pm   8pm  11am 2pm  5pm   8pm
Temperature: 76 85 85 77 74 77 82 77
Relative Humidity: 37 27 27 37 44 44 31 42
Surface Wind Direction: 140 010 340 310 046 053 023 048
Surface Wind Speed: 4 6 10 9 3 3 5 1
Transport Wind Direction 060 340 330 340        
Transport Wind Speed: 5 7 8 10        
Mixing Heights 2200 4500 5000 2500        
Ventilation Index: 10 32 40 25