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Deception Complex update forecast and disperion map

Burnout operations on the Eastern perimeter above Oakridge combined with increased burning of unburned islands and perimeter edge resulted in an additional 370 acres of fire growth yesterday and through the evening. Smoke was captured by the monitors in Westfir and Oakridge last evening as cool nighttime air flowed down slope into the lower drainages. Today, firing crews will continue burnout operations to strengthen lines on the perimeter west of Oakridge.  The smoke from the burnout operation is forecast to disperse to the west and southwest away from Oakridge and Westfir although some smoke will drift into the Oakridge communities this morning.  We forecast the air quality to reach “Unhealthy for Sensitive Groups” this morning in Westfir and “Moderate” for Dexter and Oakridge.  Gradual improvement through daytime warming, atmospheric instability and East winds this afternoon but cooling after sundown will result in some smoke pooling in the Oakridge and Westfir communities overnight.
The communities of Cottage Grove and Roseburg will see some smoke this afternoon.


 Air Quality Forecast for Friday (Particulate Matter less than 2.5 µm in diameter)

Site
Friday Morning
Sep 5, 2014
Friday Afternoon
Sep 5, 2014
Friday Evening
Sep 5, 2014
Oakridge
Moderate
Good
Moderate
Westfir
Unhealthy for Sensitive Groups
Moderate
Unhealthy for Sensitive Groups
Dexter
Moderate
Good
Good

24 Hour Average PM2.5 surface concentrations
Friday 9/5/2014 Deception Complex