Bald Sisters
Fire
Air Quality
Update for 9/22/2014 by Dan Chan
Yesterday:
Air quality
monitor at John Day measured “Moderate” amount of smoke yesterday. The fire
growth was estimated to be 250 acres and this created smoke columns up to a
mile high. However, because of the
mostly southwesterly wind last night, smoke settled in drainages to the
northeast of the fire and only relative small amount came into Prairie City
this morning.
Today:
John Day
measured less smoke this morning than yesterday. Southeasterly wind is expected for
tonight. Smoke is likely to settle into
the John Day Valley, increasing the smoke concentration at Prairie City and
John Day tonight and tomorrow morning.
Tomorrow:
Strong
Southwesterly wind is expected ahead of an approaching cold front from the
coast. This will transport most of the
smoke to the northeast of the fire.
Air
Quality Outlook (Particulate Matter less than 2.5 µm in
diameter)
|
Site
|
Yesterday
Sept 21, 2014
|
Today
Sept 22, 2014
|
Tomorrow
Sept 23, 2014
|
|
John Day
|
Moderate
|
Good
|
Good
|
|
Category
|
Meaning
|
Actions to Protect
Yourself
|
|
Good
|
Air quality is satisfactory and poses little
or no health risk.
|
None.
|
|
Moderate
|
Air Quality is acceptable for most. There
may be moderate health concern for a small number of sensitive people.
|
Unusually Sensitive people should consider
reducing prolonged or heavy outdoor recreation.
|
|
Unhealthy for Sensitive Groups(USG)
|
Increasing likelihood of respiratory
symptoms in sensitive individuals, aggravation of heart or lung disease and
premature mortality in persons with cardiopulmonary disease and the elderly.
|
People with heart or lung disease, children
and older adults should avoid all physical outdoor activity.
|
|
Unhealthy
|
Increasing aggravation of heart or lung
disease and premature mortality in persons with cardiopulmonary disease and
the elderly; increased respiratory effects in general population.
|
People with heart or lung disease, older
adults, and children should avoid prolonged or heavy exertion. Everyone else
should reduce prolonged or heavy exertion.
|
|
Very Unhealthy
|
Increasing aggravation of heart or lung
disease and premature mortality in persons with cardiopulmonary disease and
the elderly; increased respiratory effects in general population.
|
People with heart or lung disease, older
adults, and children should avoid prolonged or heavy exertion. Everyone else
should reduce prolonged or heavy exertion.
|
|
Hazardous
|
Significant aggravation of heart or lung
disease and premature mortality in persons with cardiopulmonary disease and
the elderly; significant increase in respiratory effects in general
population.
|
People with heart or lung disease, older
adults, and children should avoid all physical activity outdoors. Everyone
else should avoid prolonged or heavy exertion.
|
Unhealthy
(
56-150)
Everyone may begin to experience more serious health effects.
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
(151-250)
Triggers a health alert, meaning everyone may experience more
serious health effects
Everyone
should avoid any outdoor exertion; people with respiratory or heart disease,
the elderly and children should remain indoors.