* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...South Willamette Valley, Lower Columbia River and Cowlitz
River Valleys, Tualatin Valley, Portland West Hills and Chehalem
Mountain, East Central Willamette Valley, and South Washington
Cascade Foothills.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...In Oregon, Inner Portland Metro. In Washington, Inner
Vancouver Metro and North Clark County Lowlands.
* WHEN...Until 10 AM PST Tuesday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* 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.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 2 PM MST /1 PM PST/ Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...For the Air Stagnation Advisory, 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. For the Dense Fog Advisory, visibility less than one
mile in dense fog.
* WHERE...Portions of southwest and west central Idaho and southeast
Oregon.
* WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday.
For the Dense Fog Advisory, until noon MST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* WHAT...Visibility at 1 mile or less with areas of quarter mile or
less as well as areas of freezing fog.
* WHERE...Lower Columbia Basin of Oregon and Washington, Eastern
Columbia River Gorge of Oregon, Northern Blue Mountains of Oregon,
Foothills of the Northern Blue Mountains of Oregon, and Foothills
of the Blue Mountains of Washington.
* WHEN...Until noon PST Tuesday.
* IMPACTS...Low visibility and areas of freezing fog could make
driving conditions hazardous.
* WHAT...For the Air Stagnation Advisory, 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. For the Dense Fog Advisory, visibility less than one
mile in dense fog.
* WHERE...Portions of southwest and west central Idaho and southeast
Oregon.
* WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday.
For the Dense Fog Advisory, until noon MST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* WHAT...Visibility at 1 mile or less with areas of quarter mile or
less
* WHERE...Lower Columbia Basin of Oregon and Washington, Eastern
Columbia River Gorge of Oregon between Arlington and Boardman,
Northern Blue Mountains of Oregon, primarily along the I-84
Corridor, Foothills of the Northern Blue Mountains of Oregon
primarily along the I-84 Corridor, and Foothills of the Blue
Mountains of Washington along Hwy 12.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...For the Air Stagnation Advisory, 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. For the Dense Fog Advisory, visibility one quarter
mile or less in dense fog.
* WHERE...Lower Treasure Valley Zones, and Upper Weiser River.
* WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday.
For the Dense Fog Advisory, until noon MST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* 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.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 2 PM MST /1 PM PST/ Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...For the Air Stagnation Advisory, 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. For the Dense Fog Advisory, visibility one quarter
mile or less in dense fog.
* WHERE...Lower Treasure Valley Zones, and Upper Weiser River.
* WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday.
For the Dense Fog Advisory, until noon MST Tuesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
Fog to heavy fog has begun to form along the I-84 corridor between
Arlington through Stanfield becoming progressively thicker as you
move east. Fog is slowly progressing eastward and is expected to
reach Pendleton. Fog has also been observed just north of the
Tri-Cities along the 395 as well as along the I-82 through Coffin
RD and steadily moving towards the city area. Visibilities range
from 1 mile to less than 1/4 of a mile. Please drive with caution.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, 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...Lower Treasure Valley Zones, and Upper Weiser River.
* WHEN...For the Dense Fog Advisory, until noon MST Tuesday. For the
Air Stagnation Advisory, until 2 PM MST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* 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.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 2 PM MST /1 PM PST/ Thursday.
* 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, 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...Lower Treasure Valley Zones, and Upper Weiser River.
* WHEN...For the Dense Fog Advisory, until noon MST Tuesday. For the
Air Stagnation Advisory, until 2 PM MST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems. Low visibility could make driving conditions
hazardous.
* WHAT...A moderate risk of sneaker waves is expected.
* WHERE...The beaches and shorelines of Curry, Coos, and Douglas
counties.
* WHEN...From Monday evening through Tuesday 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...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...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 2 PM MST /1 PM PST/ Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Visibility has improved but patches of dense fog will
continue until early afternoon.
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...Portions of southwest and west central Idaho and southeast
Oregon.
* WHEN...Until 2 PM MST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...South Willamette Valley, and Central Oregon Coast Range
Lowlands.
* WHEN...Until noon PST today.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...A moderate risk of sneaker waves is expected.
* WHERE...The beaches and shorelines of Curry, Coos, and Douglas
counties.
* WHEN...From Monday evening through Tuesday 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...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...In the valleys of southwest Idaho and southeast Oregon
below 4000 feet.
* WHEN...Until 2 PM MST /1 PM PST/ Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
