* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog, and freezing fog in spots across rural areas.
or the Air Stagnation Advisory, 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, Inner Portland Metro,
and Inner Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For
the Dense Fog Advisory, until 11 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Watch fog spotty freezing fog and slick roads, especially rural
areas of the Willamette Valley.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog, and freezing fog in spots across rural areas.
or the Air Stagnation Advisory, 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...South Willamette Valley, North and Central Coast Range
Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys,
Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark
County Lowlands.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday.
For the Dense Fog Advisory, until 11 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous. Watch fog spotty freezing fog and slick roads,
especially rural areas of the Willamette Valley.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog, and freezing fog in spots across rural areas.
or the Air Stagnation Advisory, 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 Willamette Valley.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday.
For the Dense Fog Advisory, until 11 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous. Watch fog spotty freezing fog and slick roads,
especially rural areas.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog, and freezing fog in spots across rural areas.
or the Air Stagnation Advisory, 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, Inner Portland Metro,
and Inner Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For
the Dense Fog Advisory, until 11 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Watch fog spotty freezing fog and slick roads, especially rural
areas of the Willamette Valley.
* WHAT...Visibility one quarter mile or less in freezing fog.
* WHERE...Foothills of the Northern Blue Mountains of Oregon and
Lower Columbia Basin of Oregon.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...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, 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 Willamette Valley.
* WHEN...For the Dense Fog Advisory, until 10 AM PST Thursday. For
the Air Stagnation Advisory, until 4 PM PST Tuesday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.
* 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...South 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.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, 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 Willamette Valley.
* WHEN...For the Dense Fog Advisory, until 10 AM PST Thursday. For
the Air Stagnation Advisory, until 4 PM PST Tuesday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.
* 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...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, 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...South Willamette Valley.
* 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.
* WHAT...A moderate risk of sneaker waves is expected.
* WHERE...All beaches and shorelines of Douglas, Coos, and Curry
counties.
* WHEN...From Saturday evening through Sunday afternoon.
* IMPACTS...Sneaker waves can run up significantly farther on
beaches than normal, including over rocks and jetties. These
waves can suddenly knock people off of their feet and quickly
pull them into the cold ocean waters, resulting in serious
injury or death. Waves may also lift driftwood logs, trapping
anyone caught underneath.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* 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...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, Willapa and Wahkiakum Lowlands, North Clark
County Lowlands, and South Washington Cascade Foothills.
* WHEN...From 4 PM this afternoon to 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...From 4 PM this afternoon to 4 PM PST Monday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...For the Frost Advisory, temperatures as low as 33 will
result in frost formation. For the Freeze Watch, sub-freezing
temperatures as low as 30 possible.
* WHERE...South Central Oregon Coast. This includes the communities
of North Bend, Port Orford, Myrtle Point, Powers, Reedsport, and
Bandon.
* WHEN...For the Frost Advisory, from 2 AM to 9 AM PST Thursday. For
the Freeze Watch, from late Thursday night through Friday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
* WHAT...For the Frost Advisory, temperatures as low as 33 will
result in frost formation. For the Freeze Watch, sub-freezing
temperatures as low as 30 possible.
* WHERE...South Central Oregon Coast. This includes the communities
of North Bend, Port Orford, Myrtle Point, Powers, Reedsport, and
Bandon.
* WHEN...For the Frost Advisory, from 2 AM to 9 AM PST Thursday. For
the Freeze Watch, from late Thursday night through Friday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...East Central Willamette Valley, Lane County Lowlands, and
Linn County Lowlands.
* WHEN...Until 11 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility of one-quarter mile or less in dense fog.
* WHERE...Northern Blue Mountains of Oregon.
* WHEN...Until noon PST today.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Visibility near zero has been observed along
the slopes of the Northern Blues and along Interstate 84 in the
vicinity of Cabbage Hill and Deadman Pass where low clouds are
intersecting with the terrain.
* WHAT...Visibility down to a quarter of a mile or less.
* WHERE...Foothills of the Northern Blue Mountains of Oregon.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
Oregon Department of Transportation cameras along I-84 are showing
poor visibilities from Pendleton up to the top of Cabbage Hill
which is causing slow traffic.
