Yesterday,
August 29, 2013
Smoke sources on Corral and Forks
Complex fires are now almost all coming from residual combustion of fuels in
the fires’ interiors. Burnout operations
to connect indirect line with the fire perimeter on the Corral Complex continue
to be thwarted by elevated relative humidities from the marine influence and
lingering cloud cover. 24-hour average
values in Orleans trended back toward the Good range, and monitors in Hoopa
continue to record in solid green. The
monitor on Bald Hill did capture the smoke movement as the inversion lifted but
never left the comfort of Good air quality.
On the other end of the spectrum, smoke at the Sawyers Bar monitor
recorded much higher background levels through the day as the Jackass Gulch
burning operation adjacent to the monitor location tied in. Fuel conditions were dry enough that the fire
threw a spot across the road but crews quickly suppressed the slopover. The midday spike that records the inversion
lift rose over 200 μ/m3,
sending the 24-hour average firmly into the Unhealthy for Sensitive Groups
category, but the hourly observations were hovering back in the teens by
nightfall. No carryover accumulation of
smoke was observed at any other surrounding monitor locations.
Friday, August 30, 2013
With the Four Corners ridge nudging toward us as the Pacific low moves
off, temperature and relative humidity values will continue to trend warmer and
dryer today and winds will be light. Consumption
of fuels in the fires’ interiors will continue to plod along today as the fuels dry and become available.
Outlook for the weekend and
beyond
Site
|
24-hour
Average PM2.5
(µg/m3)
|
3-hour Max PM2.5
(μg/mᵌ)
|
Level of Health Concern
|
Meaning
|
Actions to Protect Yourself
|
Forecast
for Friday
Aug. 30, 2013
|
Gasquet
Crescent
City
Yreka
Hoopa
Hoopa
(Bald Hill)
Garberville
Willow
Creek
Somes
Bar
Orleans
Weitchpec
|
3
5
4
4
4
2
5
4
11
|
7
14
7
8
16
8
10
7
17
|
Good
|
Air quality is satisfactory and poses
little or no health risk
|
None
|
Gasquet
Crescent
City
Yreka
Hoopa
Hoopa
(Bald Hill)
Garberville
Willow
Creek
Somes
Bar
Weitchpec
|
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
exertion.
|
Sawyers
Bar
Orleans
|
|||
Sawyers
Bar
|
50
|
Unhealthy
for Sensitive Groups
|
Members of sensitive groups may
experience health effects. The general
public is not likely to be affected.
|
People with heart or lung disease,
children, and older adults should limit prolonged or heavy outdoor
exertion.
|
||
Unhealthy
|
Everyone may begin to experience more
serious health effects.
|
People with heart or lung disease,
children and older adults should avoid all physical outdoor activity. Everyone else should avoid prolonged or
heavy exertion.
|
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