* 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, Lane County
Lowlands, 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...Portland Metro Hills, Inner Portland Metro, and Inner
Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* 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...Central and Southern Willamette Valley, 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, 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...Portland Metro Hills, Inner Portland Metro, and Inner
Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Decreasing air quality expected.
* WHERE...Wenatchee Area, Waterville Plateau, Chelan County.
* WHEN...Until 4 AM PST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Light wind and stable weather are
expected through at least Monday night leading to the
potential for decreasing air quality. Degraded air quality can
lead to issues for people with respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...Until 4 AM PST Tuesday.
* 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...Central and Southern Willamette Valley, 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, 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...Eastern Portland/Vancouver Metro, Portland West Hills and
Chehalem Mountain, Inner Portland Metro, and Inner Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...Until 4 AM PST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...Until 4 AM PST Tuesday.
* 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...Central and Southern Willamette Valley, 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, 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...Eastern Portland/Vancouver Metro, Portland West Hills and
Chehalem Mountain, Inner Portland Metro, and Inner Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...From 4 AM Saturday to 4 AM PST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...From 4 AM Saturday to 4 AM PST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Decreasing air quality expected.
* WHERE...Wenatchee Area, Waterville Plateau, Chelan County.
* WHEN...From 4 AM Saturday to 4 AM PST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Light wind and stable weather are expected
through at least Monday night leading to the potential for
decreasing air quality. Degraded air quality can lead to issues
for people with respiratory problems.
* 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...Kittitas Valley and Yakima Valley.
* WHEN...From 4 AM Saturday to 4 AM PST Tuesday.
* 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...Central and Southern Willamette Valley, 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, 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...Eastern Portland/Vancouver Metro, Portland West Hills and
Chehalem Mountain, Inner Portland Metro, and Inner Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...A persistent inversion with light and variable winds will
lead to a period of stagnant air conditions. This scenario could
result in the build up of air pollutants near the surface over
time.
* WHERE...Central and Southern Willamette Valley, 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, Willapa and Wahkiakum Lowlands, North
Clark County Lowlands, and South Washington Cascade Foothills.
* WHEN...Until 4 PM PST Tuesday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...A persistent inversion with light and variable winds will
lead to a period of stagnant air conditions. This scenario could
result in the build up of air pollutants near the surface over
time.
* WHERE...Eastern Portland/Vancouver Metro, Portland West Hills and
Chehalem Mountain, Inner Portland Metro, and Inner Vancouver Metro.
* WHEN...Until 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
