* 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...Valleys in near the South Central Oregon Coast and in the
Eastern Douglas County Foothills, and east of the Cascades in
Klamath and Lake Counties. This includes the cities of Coquille,
Myrtle Point, Steamboat, Klamath Falls, Chiloquin, Crescent,
Lakeview, Paisley, Silver Lake and surrounding areas.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, 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...Valleys in central Douglas County. This includes Roseburg,
Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and
surrounding areas.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, 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...Valleys in central Douglas County. This includes Roseburg,
Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and
surrounding areas.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
or less in freezing fog. For the Air Stagnation Advisory, 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...Valleys in eastern Curry County and Josephine County and
Jackson County. This includes, the Illinois, Rogue and Applegate
valleys, including Grants Pass, Selma, Cave Junction, Applegate,
Rogue River, Medford, Eagle Point, Jacksonville, Ashland and
surrounding areas.
* WHEN...For the Freezing Fog Advisory, until 10 AM PST this
morning. For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Freezing fog may allow spots of ice to develop on roadways. Poor
air quality may cause issues for people with respiratory problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
Dense freezing fog has been slow to expand south this evening, but
is still expected to continue to grow in area through the
overnight hours. Visibility a half mile or less will continue to
impact Oregon Highway 11 north of Adams and areas from Helix to
the state border.
A narrow band of freezing fog extending from Dufur to Lexington
has developed this evening. The fog is expected to gradually
expand across the southern Blue Mountain Foothills as North
Central Oregon through the overnight hours, with visibilities of
a mile or less possible.
Dense freezing fog with visibilities at a half mile or less is
beginning to extend along Oregon Highway 11. Observations show the
fog has extended at least as far south as Athena. The fog bank is
expected to continue expanding south along the northern Blue
Mountain foothills, impacting the Pendleton area and portions of
Interstate-84 later tonight.
* WHAT...Poor air quality due to a period of stagnant air with light
winds.
* WHERE...Central and Southern Willamette Valley.
* WHEN...Until 10 AM PST Thursday.
* 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...All inland valleys of southern Oregon, including but not
limited to the Rogue, Illinois, Umpqua, and Klamath valleys. This
includes the cities of Medford, Ashland, Klamath Falls, Roseburg,
Grants Pass, Elkton, Canyonville, Cave Junction, Lakeview,
Coquille, and Myrtle Point.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* 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 Idaho and southeast Oregon.
* WHEN...Until 11 AM MST /10 AM PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Poor air quality due to a period of stagnant air with
light winds.
* WHERE...Central Willamette Valley and South Willamette Valley.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* 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 south central, southwest, and west central
Idaho and northeast and southeast Oregon.
* WHEN...Until 11 AM MST /10 AM PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...A moderate risk of sneaker waves is expected.
* WHERE...Beaches along Curry, Coos, and Douglas Counties. The
highest risks will be to west-facing beaches.
* WHEN...Through Tuesday evening.
* 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...For the Dense Fog Advisory, visibility of less than a
quarter of a mile in dense fog. For the Air Stagnation Advisory,
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...Valleys in central Douglas County. This includes Roseburg,
Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and
surrounding areas.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* 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...Valleys in near the South Central Oregon Coast and in the
Eastern Douglas County Foothills, and east of the Cascades in
Klamath and Lake Counties. This includes the cities of Coquille,
Myrtle Point, Steamboat, Klamath Falls, Chiloquin, Crescent,
Lakeview, Paisley, Silver Lake and surrounding areas.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Freezing Fog Advisory, visibility of less than a
quarter of mile in freezing fog. For the Air Stagnation Advisory,
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...Valleys in eastern Curry County and Josephine County and
Jackson County. This includes, the Illinois, Rogue and Applegate
valleys, including Grants Pass, Selma, Cave Junction, Applegate,
Rogue River, Medford, Eagle Point, Jacksonville, Ashland and
surrounding areas.
* WHEN...For the Freezing Fog Advisory, until 10 AM PST this
morning. For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Freezing Fog Advisory, visibility of less than a
quarter of mile in freezing fog. For the Air Stagnation Advisory,
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...Valleys in eastern Curry County and Josephine County and
Jackson County. This includes, the Illinois, Rogue and Applegate
valleys, including Grants Pass, Selma, Cave Junction, Applegate,
Rogue River, Medford, Eagle Point, Jacksonville, Ashland and
surrounding areas.
* WHEN...For the Freezing Fog Advisory, until 10 AM PST this
morning. For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...For the Dense Fog Advisory, visibility of less than a
quarter of a mile in dense fog. For the Air Stagnation Advisory,
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...Valleys in central Douglas County. This includes Roseburg,
Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and
surrounding areas.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Until 6 PM PST this evening.
* IMPACTS...Waves can run up significantly farther on a beach than
normal, including over rocks and jetties. Sneaker waves can
suddenly knock people off of their feet and quickly pull them
into the frigid ocean which may lead to serious injury or
drowning.
* 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 south central, southwest, and west central
Idaho and northeast and southeast Oregon.
* WHEN...From 9 PM MST /8 PM PST/ this evening to 11 AM MST /10 AM
PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
