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36 Pit Fire
Air Quality Report for 9/21/14
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Smoke transport winds at the 36 Pit
Fire were southeast all night long, continuing into Sunday morning with a smoke
plume aloft. A change is expected
around mid-day Sunday, swinging around through south to the southwest. This should send any smoke generated this afternoon
toward the northeast and the Highway 26 (Mt. Hood Highway) corridor. The Clackamas River valley (including
Estacada) may still be impacted, especially in the late night and early
morning hours. Not as much smoke is
expected today as we saw Saturday, although it should still be more than was
produced the previous few days. Some
ash fallout can be anticipated below the elevated plume. Monday humidities should increase, with
less smoke produced but traveling closer to the ground. Still expecting wetter conditions for later
in the week.
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36 Pit Fire Report
(prepared by Mike Broughton/Janice Peterson, Air Resource Advisors)
Air Quality Outlook (Particulate
Matter less than 2.5 µm in diameter)
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Site
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Sunday
Afternoon
Sept 21, 2014
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Sunday night
Sept 21, 2014
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Monday
Sept 22, 2014
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Tuesday Outlook
Sept 23, 2014
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Estacada
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Moderate
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Moderate early USG late
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USG AM
Moderate PM
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USG AM
Good PM
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Hwy 26 Corridor
(Sandy to Rhododendron)
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Moderate
becoming USG
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Moderate
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Moderate
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Moderate
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Molalla
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Good
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Good
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Good
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Good
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Willamette Valley
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Good (some smoke aloft)
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Good
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Good
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Good
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AQI Index (µg/m3)
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Potential Health Impacts
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Actions to Protect Yourself
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Good (0-12)
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Air quality is satisfactory and poses little or no health
risk.
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None
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Moderate (13-35)
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Air quality is acceptable for most. There may be moderate
health concern for a small number of sensitive people.
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Unusually sensitive people should consider reducing prolonged
or heavy outdoor exertion.
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Unhealthy for Sensitive Groups (36-55)
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Members of sensitive groups may experience health
effects. The general public is not likely to be affected.
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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.
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Unhealthy
(56-150)
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Everyone may begin to experience more serious health effects.
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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.
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Very Unhealthy
(151-250)
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Triggers a health alert, meaning everyone may experience more
serious health effects
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Everyone should avoid any outdoor exertion; people with
respiratory or heart disease, the elderly and children should remain indoors.
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