California Smoke Information: Monday, August 10, 2015 Shasta-Trinity & Six River Complexes

Monday, August 10, 2015 Shasta-Trinity & Six River Complexes - Air Quality 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 Sunday, based on 24-hour averages, PM Monitors at Crescent City, Eureka, Hoopa, Orleans, Weitchpec and Willow Creek reported “Good” air quality! Yet, monitors in the Trinity River drainage, South Fork Trinity River drainage, Shasta County, and Siskiyou County mostly reported “Unhealthy” level of PM2.5 concentration. Onshore flow today is going bring clean air to Humboldt County. At the same time, surface southerly wind is going to come up from the Sacramento Valley. These two winds are forecast to meet at the Shasta/Trinity County line. Upper level southerly wind is forecast for today. 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. Tonight, northwesterly wind is expected to bring smoke into Redding/Anderson area. Also, smoke will settle into the South Fork Trinity River drainage and Trinity River drainage. Poor air quality is likely to persist at Hayfork, Hyampom, Mad River and Weaverville. Tomorrow, the battle line for the surface onshore flow and southerly wind from the Sacramento valley will be further west at the Humboldt/Trinity County line. This may bring slightly better air quality to eastern Trinity County. Upper level Southerly wind is expected to be strong tomorrow and it will bring smoke from the fires further away. Yreka, Etna, Mt Shasta, and Anderson are likely to have better air quality Tomorrow.

Air Quality Outlook: Shasta-Trinity & Six Rivers Complexes
Site	Monday August 10, 2015	Tuesday August 11, 2015	Wednesday August 12, 2015	Comments
Crescent City	Good	Good	Good
Gasquet	Unhealthy	Unhealthy	USG
Happy Camp	USG	Unhealthy	Unhealthy
Etna	Very Unhealthy	Moderate	Good	8/10: Heaviest during afternoon 8/11: Heaviest in the morning
Mt. Shasta	USG	Good	Good	8/10: Heaviest during afternoon
Tulelake	Moderate	Good	Good	8/10: Heaviest during afternoon
Yreka	Unhealthy	Moderate	Good	8/10: Heaviest during afternoon 8/11: Heaviest after sunrise
Eureka	Good	Good	Good
Hoopa	Good	Good	Good
Mad River/Dinsmore	Unhealthy	USG	USG
Orleans	Moderate	Moderate	Moderate
Weitchpec	Good	Good	Good
Willow Creek	USG	USG	Moderate
Hayfork	Very Unhealthy	Very Unhealthy	Very Unhealthy	8/11 Heaviest during morning
Hyampom	Hazardous	Hazardous	Hazardous	8/10 & 8/11: Heaviest during afternoon & night
Weaverville	Hazardous	Unhealthy	Unhealthy
Anderson/Redding	Unhealthy	Good	Good
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