Air Quality Report
Issue Date: 09/07/2016
Gap Fire – Klamath National Forest Prepared by: Ariane
Sarzotti and Tomas Gonzalez
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Forecast conditions represent impacts
from smoke. Contributions from ozone
and other pollutants are not reflected.
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Fire Information: Fire is approximately 29,759 acres with a
growth of 1,801 acres since yesterday and 65% contained. Crews working along the Highway 96
corridor will continue to provide structure defense along the highway as well
as mop up and hold line where safe to do so.
On the northwest part of the fire the last portion of the fireline has
been burned out, using low intensity firing operations to eliminate unburned
fuel between the control lines and the main fire. Some interior islands of
unburned fuel may continue to burn, but a reduction in smoke in the coming
days is anticipated. On all sides of
the fire, crews will continue to mop-up and patrol the line where it is safe
to do so.
Weather
and Smoke Information: High pressure will start to build over the
area leading to dry conditions and gradually warming temperatures. Winds will
remain generally upslope, up valley 3-6 miles per hour, with ridgetop winds
north to northeast less than 10 miles per hour. Winds by Friday will start to turn more
northeast on ridges. Oak Knolls is expected to see Unhealthy for
Sensitive Groups (USG) conditions today with Unhealthy concentrations in
the afternoon to early evening. Fort Jones and Seiad is expected to see Unhealthy conditions. Yreka and Orleans are expected to see Moderate conditions with possible (USG) levels in the daytime. Grants
Pass, Medford, Ashland and Klamath Falls are expected to see Good conditions. Redding/Anderson
may see USG conditions today with
higher concentrations in the morning. Red Bluff is expected to see Moderate conditions today.
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Particulate Matter (PM 2.5) Impacts
from the Gap Fire
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Site
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Observed
Midnight-Midnight
09/06/16
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Forecast
09/07/16
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Outlook
09/08/16
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Worst
Time of Day Impacts
AQI and Period
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Grants Pass
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Good
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Good
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Good
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May see hazy skies in the evening and overnight.
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Medford
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Good
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Good
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Good
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May see hazy skies in the evening and overnight.
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Ashland
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Good
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Good
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Good
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May see hazy skies in the evening and overnight.
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Klamath Falls
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Good
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Good
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Good
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May see hazy skies in the evening and overnight.
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Oak Knoll RS
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USG
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USG
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USG
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The Unhealthy concentrations may be
observed in the late afternoon to early evening.
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Seiad
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Unhealthy
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Unhealthy
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Unhealthy
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May see Very Unhealthy smoke levels in the
afternoon.
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Yreka
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Unavailable
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Moderate
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Moderate
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Smoke Monitor temporarily down. May see USG smoke levels in the daytime.
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Fort Jones
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Unhealthy
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Unhealthy
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Unhealthy
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The worst concentrations may be observed in the
late afternoon to early evening.
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Orleans
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Moderate
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Moderate
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Moderate
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May see USG
smoke levels in the afternoon.
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Redding/Anderson
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USG
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USG
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Moderate
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May see higher smoke levels in the morning.
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Red Bluff
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Moderate
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Moderate
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Moderate
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May see higher smoke levels in the morning.
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Colors displayed above correspond
roughly with the AQI chart below.
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.
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AQI Index
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Actions to Protect Yourself
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Good
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None
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Moderate
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Unusually sensitive people should
consider reducing prolonged or heavy outdoor exertion.
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Unhealthy for Sensitive Groups - USG
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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.
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Unhealthy
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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.
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Very
Unhealthy
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Everyone
should avoid any outdoor exertion; people with respiratory or heart disease,
the elderly and children should remain indoors.
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Hazardous
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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
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