Tuesday, August 11, 2015

Tuesday, August 11, 2015 -- Shasta-Trinity & Six Rivers Complexes - Air Quality Short report

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:
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. 

Air Quality Outlook:  Shasta-Trinity & Six Rivers Complexes
Site
Tuesday
August 11, 2015
Wednesday
August 12, 2015
Thursday
August 13, 2015
Comments
Crescent City
Good
Moderate
Good

Gasquet
Moderate
USG
Moderate

Happy Camp
USG
USG
USG

Etna
Moderate
Moderate
USG
8/11 Heavier surrounding ridges
Mt. Shasta
USG
Moderate
USG

Tulelake
Good
Good
Good

Yreka
Moderate
Moderate
Unhealthy

Eureka
Good
Good
Good

Hoopa
Moderate
Moderate
Moderate
Episodes of heavy smoke overnight
Mad River/Dinsmore
Moderate
Moderate
USG

Orleans
Moderate
Moderate
USG

Weitchpec
Moderate
Moderate
USG

Willow Creek
Moderate
Moderate
USG

Hayfork
Hazardous
Very Unhealthy
Very Unhealthy
8/11: Heaviest around sunset
Hyampom
Hazardous
Hazardous
Hazardous
8/11: Heaviest during afternoon & night
Weaverville
Very Unhealthy
Very Unhealthy
Very Unhealthy
8/12: Heaviest around sunset
Anderson/Redding
Moderate
Moderate
USG

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.




AQI Index
Actions to Protect Yourself
Good
None
Moderate
Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
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.
Very Unhealthy
Everyone should avoid any outdoor exertion; people with respiratory or heart disease, the elderly and children should remain indoors.
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:
California Smoke Information Blog - http://californiasmokeinfo.blogspot.com/      
North Coast Unified Air Quality Management District http://www.ncuaqmd.org/
Shasta County Air Pollution Control District - http://www.co.shasta.ca.us/index/drm_index/aq_index.aspx

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