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36 Pit Fire - Air Quality Report and Outlook for 9/20/14

36 Pit Fire
Air Quality Report and Outlook for 9/20/14
Offshore winds from the east are setting up for today, with warm dry conditions conducive to increased fire activity and associated smoke production moving towards the west.  This pattern will continue through this evening before changing around to the west-southwest Sunday afternoon, which will then push smoke back toward the Mt. Hood area.  Air quality conditions will depend greatly upon the actual intensity of the fire today and tomorrow, which has been reasonably inactive the last few days.  Again, smoke impacts this weekend are not expected to be anywhere near as bad as it was last weekend.  West to southwest winds are expected Monday-Tuesday with a good potential of wet conditions for the latter half of the week.  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)
Saturday Afternoon
Sept 20, 2014
Saturday Evening
Sept 20, 2014
Sept 21, 2014
Monday Outlook
Sept 22, 2014
Good to Moderate
Moderate PM
Moderate PM
Hwy 26 Corridor
(Sandy to Rhododendron)
to USG
to USG
Moderate becoming Good
Willamette Valley
Moderate (visible smoke aloft)
Moderate to USG

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: