* WHAT...Valley locations may see poor air quality. This is due to
an inversion and stagnant air conditions near the surface that
will continue to trap pollutants.
* WHERE...Valleys in Douglas, Josephine, and Jackson County. This
includes the Umpqua, Illinois, Applegate, and Rogue valleys.
* WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday.
For the Dense Fog Advisory, until 1 PM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* WHAT...Visibility one quarter mile or less in freezing fog.
* WHERE...Central Oregon.
* WHEN...Until 11 AM PST Thursday.
* IMPACTS...Low visibility and slick roads could make driving
conditions hazardous.
* WHAT...Visibility one quarter mile or less in freezing fog.
* WHERE...Foothills of the Southern Blue Mountains of Oregon and
North Central Oregon.
* WHEN...Until 11 AM PST Thursday.
* IMPACTS...Low visibility and slick roads could make driving
conditions hazardous.
* WHAT...Visibility one quarter mile or less in freezing fog.
* WHERE...John Day Basin.
* WHEN...Until 11 AM PST Thursday.
* IMPACTS...Low visibility and slick roads could make driving
conditions hazardous.
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
or less in fog and freezing fog. For the Air Stagnation Advisory,
light winds and limited air movement will lead to a period of
stagnant air conditions. This scenario could result in the build
up of air pollutants over time.
* WHERE...South Willamette Valley.
* WHEN...For the Freezing Fog Advisory, until 11 AM PST Thursday.
For the Air Stagnation Advisory, until 4 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous. With temperatures at or just below freezing, fog
droplets may freeze on contact with surfaces, with slick spots on
roadways possible overnight into early Thursday.
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
or less in fog and freezing fog. For the Air Stagnation Advisory,
light winds and limited air movement will lead to a period of
stagnant air conditions. This scenario could result in the build
up of air pollutants over time.
* WHERE...South Willamette Valley.
* WHEN...For the Freezing Fog Advisory, until 11 AM PST Thursday.
For the Air Stagnation Advisory, until 4 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous. With temperatures at or just below freezing, fog
droplets may freeze on contact with surfaces, with slick spots on
roadways possible overnight into early Thursday.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...South Willamette Valley.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
Oregon Department of Environmental Quality has issued an Air
Pollution Advisory...in effect until 10 AM PST Thursday.
The Oregon Department of Environmental Quality issued an air quality
advisory for Lake County. Check current air quality conditions and
advisories on DEQs Air Quality Index or by downloading the OregonAIR
on your app on your smartphone.
Many county health and local air agencies have also issued wood
burning restrictions limiting the use of wood stoves, fireplaces and
outdoor burning. There are often exceptions for those who use wood
exclusively to heat their homes and those with limited income. Check
with your local heath or air agency for current restrictions.
People can take the following precautions to protect their health:
- Follow local burn restrictions to prevent deteriorating air
quality.
- Avoid strenuous outdoor activity during periods of poor air quality.
- People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while smoke
levels are high.
- Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating, ventilation, cooling and air purification systems.
- Avoid using wood-burning stoves and other sources of indoor smoke
if possible.
DEQs color-coded Air Quality Index provides current air quality
conditions and ranks air quality as follows: Green is good. Yellow is
moderate. Orange is unhealthy for sensitive groups such as children,
the elderly, pregnant women and those with respiratory conditions.
Red is unhealthy for everyone. Purple is very unhealthy for all
groups. Maroon is hazardous.
For additional information...please visit the web site at
https://oregonsmoke.org
* WHAT...Poor air quality will continue. This is due to an inversion
and stagnant air conditions near the surface that will continue to
trap pollutants.
* WHERE...Valley locations across southern Oregon. West of the
Cascades, this includes the Umpqua, Illinois, Applegate, and Rogue
valleys. East of the Cascades, this includes Klamath Falls,
Sprague River, Chiloquin, Chemult, Silver Lake, Paisley, and
surrounding areas.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Visibility less than one quarter of a mile in freezing fog.
Although there will be some improvement in the visibility this
afternoon, dense freezing fog will return tonight.
* WHERE...Central Oregon.
* WHEN...Until 11 AM PST Thursday.
* IMPACTS...Low visibility and slick roads could make driving
conditions hazardous.
* ADDITIONAL DETAILS...Periods of light snow flurries or light
freezing drizzle may be observed as well.
* WHAT...Visibility less than one quarter mile in freezing fog.
Although there will be some improvement in the visibility this
afternoon, dense freezing fog will return tonight.
* WHERE...Foothills of the Southern Blue Mountains of Oregon and
North Central Oregon.
* WHEN...Until 11 AM PST Thursday.
* IMPACTS...Low visibility and slick roads could make driving
conditions hazardous.
* ADDITIONAL DETAILS...Periods of light snow flurries or light
freezing drizzle may be observed as well.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast
Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County
Lowlands, and South Washington Cascade Foothills.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...For the Freezing Fog Advisory, areas of fog and freezing
fog, with visibility one quarter mile or less at times. For the
Air Stagnation Advisory, Light winds and limited air movement will
lead to a period of stagnant air conditions. This scenario could
result in the build up of air pollutants over time.
* WHERE...South Willamette Valley.
* WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday.
For the Freezing Fog Advisory, until noon PST today.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Central Willamette Valley.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.
* WHAT...For the Freezing Fog Advisory, areas of fog and freezing
fog, with visibility one quarter mile or less at times. For the
Air Stagnation Advisory, Light winds and limited air movement will
lead to a period of stagnant air conditions. This scenario could
result in the build up of air pollutants over time.
* WHERE...South Willamette Valley.
* WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday.
For the Freezing Fog Advisory, until noon PST today.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory in valleys, an
extended period of stagnant air, with light winds and little
vertical mixing. This is due to an inversion near the surface that
will continue to trap pollutants.
* WHERE...Treasure Valley Zones.
* WHEN...For the Dense Fog Advisory, until 2 PM MST Friday. For the
Air Stagnation Advisory, until 5 PM MST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* ADDITIONAL DETAILS...Fog could produce patchy black icy for slick
roads.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants in valleys.
* WHERE...Portions of south central, southwest, and west central
Idaho and northeast and southeast Oregon.
* WHEN...Until 5 PM MST /4 PM PST/ Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory in valleys, an
extended period of stagnant air, with light winds and little
vertical mixing. This is due to an inversion near the surface that
will continue to trap pollutants.
* WHERE...Treasure Valley Zones.
* WHEN...For the Dense Fog Advisory, until 2 PM MST Friday. For the
Air Stagnation Advisory, until 5 PM MST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* ADDITIONAL DETAILS...Fog could produce patchy black icy for slick
roads.
