Wednesday, August 12, 2015

Wednesday, August 12, 2015 - Shasta-Trinity & Six Rivers Complexes - Air Quality Report (Short)

Wednesday, August 12, 2015 - Shasta-Trinity & Six Rivers Complexes - Air Quality Report (Short)
Prepared by Chuck Sams, Erin Law & Dan Chan

Forecast conditions represent impacts from smoke.  Contributions from ozone and other pollutants are not reflected.
Smoke Synopsis:
On Tuesday, based on 24-hour averages, most PM Monitors reported “Good” or “Moderate” air quality in the area.  Happy Camp reported “USG” condition.  Hayfork, Hyampon, and Weaverville reported “Unhealthy” condition.  This is a considerable improvement from a few days ago when “Hazardous” condition was reported at Hayfork. 

Today/Tomorrow:  Westerly onshore flow will meet Southerly Valley wind from Sacramento Valley in Central/Eastern Trinity County.  Good mixing height and strong Southerly transport wind is expected for today and tomorrow.  So, smoke from fires in Trinity County is likely to be lifted and transported to the North.  The improved air quality in the area is likely to continue today and tomorrow.  Over nights, smoke will settle into the South Fork Trinity River drainage and Trinity River drainage.  Anderson may receive some smoke from the Rocky and Jerusalem fires in east of Clear Lake, CA, about 50 miles NW of Sacramento, CA.

Friday:  Wind will become weak for the area as a high pressure is being established.  The atmosphere will become more stable and thus, day time mixing will be substantially weaker. 

Air Quality Outlook:  Shasta-Trinity & Six Rivers Complexes
Site
Wednesday
August 12, 2015
Thursday
August 13, 2015
Friday
August 14, 2015
Comments
Crescent City
Moderate
Good
Good

Gasquet
Moderate
Good
Good

Happy Camp
USG
USG
Moderate

Etna
Moderate
USG
Moderate-AM
8/12: Short impacts late AM: 8/13 Heaviest before sundown.
Mt. Shasta
Moderate
USG
Moderate-AM
8/13:  Heaviest before sundown.
Tulelake
Good
Good
Good-AM

Yreka
Good
Moderate
Moderate-AM

Eureka
Good
Good
Good

Hoopa
Good
Good
Moderate

Mad River/Dinsmore
Moderate
USG
Unhealthy

Orleans
Good
Moderate
Moderate

Weitchpec
Good
Good
Moderate

Willow Creek
Moderate
Moderate
Moderate

Hayfork
Very Unhealthy
Very Unhealthy
Unhealthy-AM
8/12:  Heaviest near sundown.  8/13: Heaviest late afternoon
Hyampom
Hazardous
Very Unhealthy
Unhealthy-AM
8/12 & 8/13 Heaviest late afternoon
Weaverville
Very Unhealthy
Very Unhealthy
Very Unhealthy
8/12 Much lighter during daylight hours.  8/13 Much lighter during late afternoon
Anderson/Redding
Moderate
USG
Moderate

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
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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