Such weather patterns have occurred over the past couple of days near the town of Sisters and the surrounding areas. With cold temperatures and an inversion in place, smoke has settled into the area in the evening hours and has lingered until mid-day, reducing air quality and visibility.
A temperature inversion acts as a "cap", trapping the smoke at low levels and keeping it from escaping into the atmosphere and being dispersed.
Residents and visitors to the area should be aware that air quality may be reduced at different times due to the impact of smoke from the Pole Creek Fire. People with breathing problems or other health issues should monitor the air quality index for areas affected by wildfire.
For further information on the effect of wildfires and air quality, please visit the DEQ wildfire information page at http://www.deq.state.or.us/aq/burning/wildfires/index.htm, which includes tools to help people assess smoke levels in their area.
Further information regarding the Pole Creek Fire, visit http://inciweb.org/incident/3244/ or phone 541-549-6935.