Tuesday, August 11, 2015 -- Shasta-Trinity & Six Rivers Complexes - Air Quality Short report
Prepared by Chuck Sams, Erin Law and Dan Chan
Forecast conditions represent impacts from smoke. Contributions from ozone and other pollutants
are not reflected.
Smoke Synopsis:
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On Monday, based on 24-hour averages, PM Monitors
at Crescent City, Eureka, Hoopa, Orleans, Weitchpec and Willow Creek reported
“Good” air quality! Air quality in the
Trinity River drainage, South Fork Trinity River drainage, Shasta County, and
Siskiyou County also improved yesterday.
Based on 24-hour averages, Hayfork improved from “Very Unhealthy” to “Unhealthy”. Mad River improved from “Unhealthy” to “Moderate”. Etna improved from “Unhealthy” to ”Moderate”. Despite of hazy condition at
Anderson/Redding in the morning, Anderson/Redding measured “Moderate” air
quality only.
Onshore flow is going bring clean air to Humboldt
County today and tomorrow. At the same
time, surface southerly wind is going to come up from the Sacramento Valley
today and tomorrow. These two winds are forecast to meet at Central Trinity County. Strong upper level southerly wind is
forecast for today and tomorrow. As a
result, smoke from fires in Trinity County is likely to stay in Trinity
County near the ground. When the smoke
is lifted due to day time mixing, it will be transported northward. Over nights,
smoke will settle into the South Fork Trinity
River drainage and Trinity River drainage.
With good day time mixing, air quality at Hayfork,
Hyampom, Mad River and Weaverville are likely to be slightly better than a
few days ago.
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Air Quality Outlook: Shasta-Trinity & Six Rivers Complexes
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Site
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Tuesday
August 11, 2015
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Wednesday
August 12, 2015
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Thursday
August 13, 2015
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Comments
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Crescent City
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Good
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Moderate
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Good
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Gasquet
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Moderate
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USG
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Moderate
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Happy Camp
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USG
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USG
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USG
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Etna
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Moderate
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Moderate
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USG
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8/11 Heavier surrounding ridges
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Mt. Shasta
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USG
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Moderate
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USG
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Tulelake
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Good
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Good
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Good
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Yreka
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Moderate
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Moderate
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Unhealthy
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Eureka
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Good
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Good
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Good
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Hoopa
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Moderate
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Moderate
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Moderate
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Episodes of heavy smoke overnight
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Mad River/Dinsmore
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Moderate
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Moderate
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USG
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Orleans
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Moderate
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Moderate
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USG
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Weitchpec
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Moderate
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Moderate
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USG
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Willow Creek
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Moderate
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Moderate
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USG
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Hayfork
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Hazardous
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Very
Unhealthy
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Very
Unhealthy
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8/11: Heaviest around sunset
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Hyampom
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Hazardous
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Hazardous
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Hazardous
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8/11:
Heaviest during afternoon & night
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Weaverville
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Very
Unhealthy
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Very
Unhealthy
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Very
Unhealthy
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8/12: Heaviest around sunset
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Anderson/Redding
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Moderate
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Moderate
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USG
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Disclaimer:
Forecast conditions represent air quality levels affected by fine
particulates; contribution from ozone and other pollutants is not reflected. Conditions may change quickly, these
projections are based on anticipated weather and fire activity. Sensitive groups including individuals with
asthma, lung or heart disease, children, older adults, and pregnant women
should take precautions to avoid exposure to smoke. If you feel as though you are having health
effects from smoke, see your doctor or health professional as needed. In some cases your eyes are your best
tools. If it is smoky outside, you are being impacted. Use caution when driving in or around smoky
areas.
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AQI Index
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Actions to Protect Yourself
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Good
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None
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Moderate
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Unusually sensitive people
should consider reducing prolonged or heavy outdoor exertion.
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Unhealthy for Sensitive
Groups - USG
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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
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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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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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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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Links:
Shasta County Air Pollution Control
District - http://www.co.shasta.ca.us/index/drm_index/aq_index.aspx
Siskiyou County Air Pollution Control
District http://www.co.siskiyou.ca.us/content/agriculture-air-pollution-control-district
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