Prepared by Chuck Sams 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 Tuesday, based on 24-hour averages, many PM
Monitors reported “Good” or “Moderate” air quality in the area. Weaverville reported “USG” condition. “Unhealthy” condition was reported at Happy
Camp, Yreka, and Etna. “Very Unhealthy”
condition was reported at Hayfork and Hyampon. “Hazardous” condition was
reported at Weitchpec.
Today/Tomorrow: Day time mixing will not be as
good as the previous days due to lower mixing height and slower transport
wind speed because of the establishment of high pressure over the area. Northweterly/Westerly onshore wind will
flow all the way into Shasta County in late afternoon today, but it will be
weaker tomorrow and only go into Humboldt/Trinity County line. Strong Northerly wind is forecast to
develop tonight at the Sacramento Valley, but this wind is forecast to weaken
tomorrow. Air quality is likely to
deteriorate in the area, especially in Trinity County where the fires
are.
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Air Quality Outlook: Shasta-Trinity & Six Rivers Complexes
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Site
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Friday
August 14, 2015
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Saturday
August 15, 2015
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Sunday
August 16, 2015
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Comments
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Crescent City
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Good
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Moderate
|
USG
|
|
Gasquet
|
Moderate
|
USG
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Unhealthy
|
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Happy Camp
|
USG
|
USG
|
Unhealthy
|
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Etna
|
USG
|
Good
|
Good
|
8/14: Very heavy in AM
|
Mt. Shasta
|
Moderate
|
Moderate
|
Good
|
|
Tulelake
|
Moderate
|
USG
|
Moderate
|
|
Yreka
|
Moderate
|
Moderate
|
Moderate
|
|
Eureka
|
Good
|
Good
|
Good
|
|
Hoopa
|
Moderate
|
USG
|
USG
|
|
Mad River/Dinsmore
|
USG
|
USG
|
USG
|
|
Orleans
|
Moderate
|
Moderate
|
Moderate
|
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Weitchpec
|
Moderate
|
Moderate
|
Moderate
|
|
Willow Creek
|
Moderate
|
Moderate
|
Moderate
|
|
Burnt Ranch
|
Moderate
|
Moderate
|
Unhealthy
|
|
Hayfork
|
USG
|
Unhealthy
|
Unhealthy
|
8/14 & 8/15 Heaviest near
sundown
|
Hyampom
|
Very
Unhealthy
|
Unhealthy
|
Unhealthy
|
8/14: Heaviest late afternoon
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Weaverville
|
USG
|
USG
|
USG
|
8/14 & 8/15: Very heavy
during AM
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Anderson/Redding
|
Moderate
|
Moderate
|
Moderate
|
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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
|
Good
|
None
|
Moderate
|
Unusually sensitive people
should consider reducing prolonged or heavy outdoor exertion.
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Unhealthy for Sensitive
Groups - USG
|
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.
|
Unhealthy
|
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
|
Everyone should avoid any outdoor exertion; people with
respiratory or heart disease, the elderly and children should remain indoors.
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Hazardous
|
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
|
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
Wildfire Smoke – A Guide for Public Health Official from California Air Resource Board
Wildland Fire Personnel Smoke Exposure Guidebook from National Interagency Fire Center
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