* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense 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...In Oregon, Inner Portland Metro. In Washington, Inner
Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For
the Dense Fog Advisory, until noon PST today.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
deteriorating 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, 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...Lower Columbia River and Cowlitz River Valleys, and North
Clark County Lowlands.
* WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday.
For the Dense 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, 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...In Oregon, Inner Portland Metro. In Washington, Inner
Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For
the Dense Fog Advisory, until noon PST today.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
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...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lane County
Lowlands, Willapa and Wahkiakum 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 Dense Fog Advisory, visibility one quarter mile or
less at times in dense 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...Lower Columbia River and Cowlitz River Valleys, Tualatin
Valley, and North Clark County Lowlands.
* WHEN...For the Dense Fog Advisory, until 9 AM PST this morning.
For the Air Stagnation Advisory, until 4 AM PST Thursday.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
deteriorating air quality may cause issues for people with
respiratory problems.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less at times in dense 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...In Oregon, Inner Portland Metro. In Washington, Inner
Vancouver Metro.
* WHEN...For the Dense Fog Advisory, until 9 AM PST this morning.
For the Air Stagnation Advisory, until 4 PM PST Monday.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
deteriorating air quality may cause issues for people with
respiratory problems.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less at times in dense 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...In Oregon, Inner Portland Metro. In Washington, Inner
Vancouver Metro.
* WHEN...For the Dense Fog Advisory, until 9 AM PST this morning.
For the Air Stagnation Advisory, until 4 PM PST Monday.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
deteriorating air quality may cause issues for people with
respiratory problems.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less at times in dense 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...Lower Columbia River and Cowlitz River Valleys, Tualatin
Valley, and North Clark County Lowlands.
* WHEN...For the Dense Fog Advisory, until 9 AM PST this morning.
For the Air Stagnation Advisory, until 4 AM PST Thursday.
* IMPACTS...For the Dense Fog Advisory, low visibility could make
driving conditions hazardous. For the Air Stagnation Advisory,
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...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.
