Air Quality Summary August 12, 2013
Incident: Big Windy Complex Wildfire
Air quality levels in SW Oregon continued to be Good to Moderate to start the week. A significant amount of smoke is visible aloft due to very active fires in northern California, as well as some morning smoke in many of the river valleys, especially this morning in the Umpqua River valley above Tiller.
Air Quality Forecast: As local conditions warm and dry out Tuesday afternoon and Wednesday, limited burnouts may be conducted at each of the SW Oregon fire complexes (Big Windy, Douglas, and Whiskey). During these periods, new smoke plumes will be visible in the area and air quality is expected to degrade, although nothing as bad as we experienced last week. Afternoon winds will tend to be from the northwest at the surface and southwest aloft. This will result in locally generated low level smoke drifting southeastward while smoke at higher levels will head to the northeast. Again, expect evening and late night smoke to pool in the river valleys, drifting slowly downriver until mid-morning, when the flow will reverse with smoke moving upriver resulting in poor air quality in areas previously clear for a few hours until around noon as warmer temperatures help with dispersion.
For more information visit www.oregonsmoke.blogspot.com
For hourly information on air quality conditions in Oregon visit http://www.deq.state.or.us/aqi/index.aspx