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36 Pit Fire - Air Quality Report and Outlook for 9/19/14

36 Pit Fire
Air Quality Report and Outlook for 9/19/14
Friday will be a transition day from the moist flow we have been experiencing over to a warmer, dry offshore pattern for Saturday.  Light winds today will not disperse or transport smoke to any great extent, resulting in Moderate air quality conditions close to the 36 Pit Fire and Good air quality elsewhere.  Winds will become northerly overnight tonight, turning easterly on Saturday.  Smoke will move south then west and will become noticeable in Molalla and into the Willamette Valley, approaching Unhealthy for Sensitive Groups in some areas, although nowhere near as bad as it was last weekend.  Firefighters are continuing the aggressive attack today in anticipation of tomorrow’s warmer, drier conditions.  Updates will be issued any time there are changes from anticipated conditions.
36 Pit Fire Report (prepared by Mike Broughton, Air Resource Advisor)­­­­

Air Quality Outlook (Particulate Matter less than 2.5 µm in diameter)
Friday Afternoon
Sept 19, 2014
Friday Evening
Sept 19, 2014
Sept 20, 2014
Sunday Outlook
Sept 21, 2014
Moderate to USG AM
Good PM
Moderate PM
Hwy 26 Corridor
(Sandy to Rhododendron)
to USG
Moderate to USG
Willamette Valley
Moderate (visible smoke aloft)
Moderate (visible smoke aloft)

AQI Index (µg/m3)
Potential Health Impacts
Actions to Protect Yourself
Good (0-12)
Air quality is satisfactory and poses little or no health risk.

Moderate (13-35)
Air quality is acceptable for most. There may be moderate health concern for a small number of sensitive people.
Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
Unhealthy for Sensitive Groups (36-55)
Members of sensitive groups may experience health effects. The general public is not likely to be affected.
People with heart or lung disease, children and older adults should reduce prolonged or heavy outdoor exertion.  Everyone else should limit prolonged or heavy exertion.
Everyone may begin to experience more serious health effects.
The following groups should avoid all physical outdoor activity: People with heart or lung disease, children and older adults.  Everyone else should avoid prolonged or heavy exertion.
Very Unhealthy
Triggers a health alert, meaning everyone may experience more serious health effects
Everyone should avoid any outdoor exertion; people with respiratory or heart disease, the elderly and children should remain indoors.
For more information see the Oregon Smoke blog:
Air Quality data can be viewed at: