Air Quality Forecast - Chelan Lake &
Methow Valley Fires Thursday,
August 27, 2015
Prepared by: Carolyn Kelly, Air Resource Advisor Trainee (ckelly8384@gmail.com)
Note:
Air monitors in Brewster and Manson are up and running. Look for their data
at wasmoke.blogspot.com
Thursday:
Yesterday, burnout operations on
the Cougar Creek Fire, southwest of here, added additional smoke to areas
near the Chelan Lake and Methow Valley Fires. Today, the smoke will gradually
lift with the inversion with slight improvement in air quality. However, strong winds in the morning will
result in greater fire activity and generate more smoke which will settle in
valley communities later in the afternoon and through the evening.
Friday: Light
winds will be insufficient to cleanse smoke from affected communities. Smoke
is likely to affect these areas more towards the evening as it settles into
the valleys. Any burnout on the Cougar Fire could bring additional smoke into
our area.
Saturday: A frontal passage is expected to bring strong winds
and some rain. This may provide
communities downwind of the fires some relief from smoke conditions seen
earlier in the week.
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Site
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August
27
Air
quality –
Thursday
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August
28
Air
Quality – Friday
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August
29
Air
Quality –
Saturday
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Comments
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Chelan
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Unhealthy
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Unhealthy for Sensitive Groups
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Moderate
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Thursday will see a lift in the smoke by late morning but a return to
unhealthy conditions in late afternoon as smoke settles into Lake Chelan
area.
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Manson
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Very Unhealthy
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Unhealthy
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Moderate
|
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Winthrop
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Unhealthy
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Unhealthy for Sensitive Groups
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Unhealthy for Sensitive Groups
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Twisp
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Very Unhealthy
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Unhealthy
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Unhealthy for Sensitive Groups
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Brewster
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Very Unhealthy
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Unhealthy for Sensitive Groups
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Unhealthy for Sensitive Groups
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Leavenworth
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Moderate
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Moderate
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Good
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Smoke from Cougar Fire will linger in this area and bring more smoke
on Friday.
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Wenatchee
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Moderate
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Moderate
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Good
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Smoke from Cougar Fire will linger in this area and bring more smoke
on Friday.
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Disclaimer:
Conditions may change quickly. These predictions are based on anticipated
weather and fire activity. The air
quality outlook is based on data from automated instruments that have not
been subjected to a quality assurance review. AQI’s estimated for sites with
air monitors.
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For information on what each air Quality Index color code
means, click on the “Smoke and
Health” tab.
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