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WWUS76 KPQR 050104
NPWPQR

URGENT - WEATHER MESSAGE
National Weather Service Portland OR
504 PM PST Wed Dec 4 2024

ORZ116>118-051315-
/O.NEW.KPQR.ZF.Y.0004.241205T0104Z-241205T1900Z/
/O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/
Benton County Lowlands-Linn County Lowlands-Lane County Lowlands-
Including the cities of Creswell, Mohawk, Eugene, Pleasant Hill,
Albany, Corvallis, Springfield, Brownsville, Jasper, Philomath,
Lebanon, Marcola, Monroe, Harrisburg, Junction City, Greenberry,
and Cottage Grove
504 PM PST Wed Dec 4 2024

...FREEZING FOG ADVISORY IN EFFECT UNTIL 11 AM PST THURSDAY...
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
  or less in fog and freezing 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...South Willamette Valley.

* WHEN...For the Freezing Fog Advisory, until 11 AM PST Thursday.
  For the Air Stagnation Advisory, until 4 AM PST Thursday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems. Low visibility could make driving conditions
  hazardous. With temperatures at or just below freezing, fog
  droplets may freeze on contact with surfaces, with slick spots on
  roadways possible overnight into early Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.

&&

$$

ORZ104-105-108-109-113>115-123>125-WAZ202-204-205-208-051200-
/O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/
North Oregon Coast Range Lowlands-Central Oregon Coast Range
Lowlands-Lower Columbia River-Tualatin Valley-Outer Southeast
Portland Metro-West Central Willamette Valley-East Central
Willamette Valley-Clackamas County Cascade Foothills-Cascade
Foothills of Marion and Linn Counties-Lane County Cascade
Foothills-Willapa and Wahkiakum Lowlands-Cowlitz County Lowlands-
North Clark County Lowlands-South Washington Cascade Foothills-
Including the cities of Vernonia, Tigard, Green Peter Reservoir,
Longview, Dorena Reservoir, Cottage Grove Lake, Hockinson,
Dorena, Camp Bonneville, Burnt Woods, Orchards, Sifton,
Spitzenberg, Scappoose, Kelso, Rose Valley, Battle Ground,
Svenson, Tiernan, Blaine, Heisson, Aloha, Welches, Oakridge,
Vida, Cascadia, Deadwood, Zigzag, Warren, Shortys Corner, Menlo,
Fargher Lake, Holley, Farmington, St. Helens, Beaverton, West
Salem, Boring, Clark County Fairgrounds, Willapa, Hillsboro,
Blodgett, Proebstel, Necanicum, Klaskanine Summit, Mayger,
Brightwood, Alston, Tualatin, Alsea, Cherryville, Three Lynx,
Blue River, Salem, Swisshome, Rhododendron, Mapleton, and Pigeon
Springs
504 PM PST Wed Dec 4 2024

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...

* 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, Central Willamette Valley,
  Tualatin Valley, Outer Southeast Portland Metro, Willapa and
  Wahkiakum Lowlands, North Clark County Lowlands, and South
  Washington Cascade Foothills.

* WHEN...Until 4 AM PST Thursday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.

&&

$$

WAZ206-051200-
/O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/
Inner Vancouver Metro-
Including the cities of Vancouver Downtown
504 PM PST Wed Dec 4 2024

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY...

* 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...Inner Vancouver Metro.

* WHEN...Until 4 AM PST Thursday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.

&&

$$

For more information from the National Weather Service visit
www.weather.gov/portland

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