California Smoke Information: Wednesday, August 19, 2015 - Shasta-Trininty/Six Rivers Smoke Report

Wednesday August 19, 2015

Shasta-Trinity & Six Rivers Complexes Mike Broughton & Jen Croft

Forecast conditions represent impacts from smoke. Contributions from ozone and other pollutants are not reflected.

Smoke Synopsis:

The ridge of high pressure has begun to weaken slightly over northern California, which should start to allow some additional smoke dispersion late this afternoon into the next couple days. Smoke plumes able to rise above the valleys will drift to the east and south on Thursday and Friday. High pressure is expected to build a bit over the weekend again reducing smoke transport, then early next week winds may shift, becoming southwesterly sending smoke to the northeast.

Coastal sections should see a definitive increase in marine influence, which should keep smoke out of the immediate areas but may present a visibility problem on roads where moist marine air mixes with inland valley smoke. The deep inland valleys are still expected to remain impacted with dense smoke through Thursday afternoon, although there may be some minor relief looking ahead to Friday.

Fire behavior remains moderately active, and may pick up a bit Thursday as the ventilation improves somewhat.

Air Quality Outlook: Shasta-Trinity & Six Rivers Complexes
Site	Wednesday August 19, 2015	Thursday August 20, 2015	Friday August 21, 2015	Comments
Crescent City	Moderate	Moderate	Good	Reduced visibility is possible on inland valley roads where smoke and coastal moisture mix.
Gasquet	Moderate	Moderate	Moderate
Happy Camp	Unhealthy	USG	Moderate
Etna	Unhealthy	USG	Moderate
Mt. Shasta	Moderate	Moderate	Moderate
Tulelake	USG	Moderate	Good
Yreka	USG	Moderate	Good
Eureka	Moderate	Moderate	Good	Reduced visibility is possible on inland valley roads where smoke and coastal moisture mix.
Hoopa	Very Unhealthy	Very Unhealthy	Very Unhealthy	Improving conditions possible Friday afternoon.
Mad River/Dinsmore	Very Unhealthy	Unhealthy	Unhealthy	Improving conditions possible Friday afternoon.
Orleans	Unhealthy	Unhealthy	Unhealthy	Improving conditions possible Friday afternoon.
Weitchpec	Unhealthy	Unhealthy	Unhealthy	Improving conditions possible Friday afternoon.
Willow Creek	Hazardous	Very Unhealthy	Very Unhealthy	Improving conditions possible Friday afternoon.
Burnt Ranch	Hazardous	Very Unhealthy	Very Unhealthy	Improving conditions possible Friday afternoon.
Hayfork	Hazardous	Hazardous	Very Unhealthy	Improving conditions possible Friday afternoon.
Hyampom	Hazardous	Hazardous	Very Unhealthy	Improving conditions possible Friday afternoon.
Weaverville	Very Unhealthy	Very Unhealthy	Very Unhealthy	Improving conditions possible Friday afternoon.
Anderson/Redding	Moderate	Moderate	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