Central OR & JDICC Wildfire Air Quality Summary
Report
Prepared by Andrea Holland, Air Resource Advisor
Air Quality Outlook
Yesterday’s northerly winds drove smoke from the
Murderers Creek South Fire (south of Dayville) towards Burns resulting in unhealthy
air quality conditions. Today, weak
surface winds will hold inversions (and smoke in affected valleys) through the
early to mid-afternoon in areas closest to the South Fork Complex and Bald
Sisters Fires. Late this
afternoon surface winds are expected to shift and come more from the west/northwest. High temperatures with low humidity
will persist and likely will result in a similar number of acres burned within
the South Fork Complex and Bald Sisters Fires. Smoke from these fires may drift this afternoon and
into the evening into Johns Day,
Seneca, Prairie City and other surrounding communities. Tonight smoke will linger overnight
in downwind low-lying valley areas and into the morning, dispersing with
expected winds Friday afternoon.
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Site
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August 6
AQI
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August 7
AQI
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August 8
AQI
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Remarks
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Bend
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Good
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Good
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Good
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Burns
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Unhealthy
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Moderate
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Moderate
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Madras
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Good
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Good
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Good
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John Day
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Good
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Moderate
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Moderate
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Prineville
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Good
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Good
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Good
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Seneca
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No data
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Moderate
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Moderate
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Smokey on 8/6; expect same 8/7
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Sisters
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Good
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Good
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Good
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PLEASE NOTE: The air
quality outlook is based on data from automated instruments that have not
been subjected to a quality assurance review to determine their accuracy.
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Air Quality Index
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Potential Health Impacts
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Actions to Reduce Smoke Exposure
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Good
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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
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Air quality is acceptable for
most. There may be moderate
health concern for a very small number of individuals.
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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 for Sensitive
Groups
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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 or older adults should reduce prolonged or heavy outdoor
exertion. Everyone else should
limit prolonged or heavy exertion.
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Unhealthy
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Everyone may begin to
experience health effects. These
effects may be more serious for sensitive people.
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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
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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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Hazardous
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Triggers health
warnings of emergency conditions.
Everyone is very likely to be affected by serious health effects.
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The following
groups should remain indoors and keep activity levels low: people with heart
or lung disease, children and older adults. Everyone else should avoid prolonged or heavy exertion.
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