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Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
233 PM PST Wed Nov 25 2020

ORZ023>031-262300-
/O.NEW.KMFR.AS.Y.0003.201127T0100Z-201130T1900Z/
Central Douglas County-Eastern Curry County and Josephine County-
Eastern Douglas County Foothills-Jackson County-
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Drain, Elkton, Roseburg, Sutherlin,
Green, Myrtle Creek, Canyonville, Grants Pass, Cave Junction,
Steamboat, Toketee Falls, Medford, Ashland, Altamont,
Klamath Falls, Beatty, Bly, Chemult, Crescent, Gilchrist,
Sprague River, Adel, Lakeview, and Valley Falls
233 PM PST Wed Nov 25 2020

...AIR STAGNATION ADVISORY IN EFFECT FROM 5 PM THURSDAY TO 11 AM
PST MONDAY...

* WHAT...High pressure over the area during the advisory period
  will result in light winds, strong valley inversions, and
  limited mixing. These conditions are likely to result in periods
  of diminished air quality during the advisory period.

* WHERE...The valleys of Central Douglas County, Eastern Curry
  County and Josephine County, Eastern Douglas County Foothills,
  Jackson County, South Central Oregon Cascades, Siskiyou
  Mountains and Southern Oregon Cascades, Klamath Basin, Northern
  and Eastern Klamath County and Western Lake County and Central
  and Eastern Lake County.

* WHEN...From 5 PM Thursday to 11 AM PST Monday.

* IMPACTS...Air stagnation is likely to result in diminishing
  air quality with time, especially in and near areas with
  significant sources of air pollution. Diminished air quality
  is likely to cause health issues for people with respiratory
  problems if precautions are not taken.

* ADDITIONAL DETAILS...An incoming frontal system is expected to
  result in improving air quality Monday afternoon.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/mfr/HAZARD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People with respiratory illness should follow their physician`s
advice for dealing with diminished air quality. N95 masks are
effective at filtering out the majority of harmful air
particulates.

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.

&&

$$
BTL
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