* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, moderate 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 Air Stagnation Advisory, until noon PST Friday. For
the Dense Fog Advisory, until 10 AM PST this morning.
* IMPACTS...Moderate 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 Thursday night into Friday 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 and 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 Air Stagnation Advisory, until noon PST Friday. For
the Freezing Fog Advisory, until 10 AM PST this morning.
* 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 Thursday night into Friday may allow
for a brief period of improved mixing and particulate dispersion.
* WHAT...Moderate 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 across Lake County and eastern Klamath County,
South Central Oregon Coast, Eastern Douglas County Foothills, and
Klamath Basin.
* WHEN...Until noon PST Friday.
* IMPACTS...Moderate air quality may cause issues for people with
respiratory problems.
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
or less in freezing fog and 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 Air Stagnation Advisory, until noon PST Friday. For
the Freezing Fog Advisory, until 10 AM PST this morning.
* 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 Thursday night into Friday 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, moderate 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 Air Stagnation Advisory, until noon PST Friday. For
the Dense Fog Advisory, until 10 AM PST this morning.
* IMPACTS...Moderate 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 Thursday night into Friday 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 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...For the Freezing Fog Advisory, visibility one quarter mile
or less in freezing fog and 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 noon PST Friday.
* 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 Thursday night into Friday 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, moderate 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 noon PST Friday.
* 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 Thursday night into Friday may allow
for a brief period of improved mixing and particulate dispersion.
* WHAT...Moderate 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 across Lake County and eastern Klamath County,
South Central Oregon Coast, Eastern Douglas County Foothills, and
Klamath Basin.
* WHEN...Until noon PST Friday.
* IMPACTS...Moderate 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, moderate 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 noon PST Friday.
* 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 Thursday night into Friday 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 and 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 noon PST Friday.
* 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 Thursday night into Friday may allow
for a brief period of improved mixing and particulate dispersion.
Patchy dense freezing fog will continue into late evening hours
across the Blue Mountain Foothills of WA and OR. Visibilities of
less than 1/2 mile are possible in spots, especially along Highway
11 near Athena, Interstate 84 near Pendleton and in portions of
Walla Walla. Drivers should expect sudden reductions in
visibility. Slow down and allow for extra space between yourself
and other vehicles if you encounter dense fog.
Patchy dense freezing fog will continue into late evening hours
across the Blue Mountain Foothills of WA and OR. Visibilities of
less than 1/2 mile are possible in spots, especially along Highway
11 near Athena, Interstate 84 near Pendleton and in portions of
Walla Walla. Drivers should expect sudden reductions in
visibility. Slow down and allow for extra space between yourself
and other vehicles if you encounter dense fog.
* 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.
* WHERE...South Willamette Valley.
* WHEN...Until 10 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 in dense fog. For the Air Stagnation Advisory, light winds
and limited air movement will lead to a period of stagnant air
conditions.
* WHERE...South Willamette Valley.
* WHEN...Until 10 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...Visibility one quarter mile or less in dense fog.
* WHERE...Lane County Cascade Foothills.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions.
* WHERE...Central Willamette Valley.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Moderate to poor air quality will continue through the next
few days. This is due to an inversion and stagnant air conditions
near the surface that will continue to trap pollutants.
* WHERE...The valleys of Klamath, Lake, Jackson, Josephine and
Douglas Counties. This includes the Klamath Basin and the Rogue,
Illinois, Umpqua, Goose, Summer Lake and Applegate valleys.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor and unhealthy air quality may cause issues for
people with respiratory problems.
* ADDITIONAL DETAILS...A dry cold front on Thursday night and Friday
morning will improve mixing conditions.
Patchy dense freezing fog will continue into early evening hours
across the Blue Mountain Foothills. Visibilities of less than 1/2
mile are possible in spots, especially along Highway 11 near
Weston, Interstate 84 near Pendleton and in portions of Walla
Walla. Drivers should expect sudden reductions in visibility.
Slow down and allow for extra space between yourself and other
vehicles if you encounter dense fog.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions.
* WHERE...Central Willamette Valley, Benton County Lowlands, and
Linn County Lowlands.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
