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Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1227 PM PST Tue Nov 20 2018

...AIR STAGNATION CONTINUES FOR EASTERN WASHINGTON AND NORTH
IDAHO...

.Light winds and a strong inversion will persist through
Wednesday, leading to air stagnation across north Idaho as well
as central and eastern Washington. The arrival of light
precipitation and a subtle increase in winds Wednesday and
Wednesday night may improve pollution dispersion for some areas
across the Inland Northwest. Increasing winds Thursday into Friday
will have the potential to further improve air quality, however
light winds may return over the weekend.

IDC009-017-021-055-057-061-069-079-WAC001-003-007-017-019-023-025-
043-047-051-063-065-075-212100-
/O.CON.KOTX.AS.Y.0002.000000T0000Z-181121T2100Z/
Benewah-Bonner-Boundary-Kootenai-Latah-Lewis-Nez Perce-Shoshone-
Adams-Asotin-Chelan-Douglas-Ferry-Garfield-Grant-Lincoln-Okanogan-
Pend Oreille-Spokane-Stevens-Whitman-
1227 PM PST Tue Nov 20 2018

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST
WEDNESDAY...

* Air Quality...High pressure will cause strong temperature
  inversions, trapping pollutants near the surface.

* Timing...Through Wednesday.

* Impacts...Air quality has the potential to be degraded,
  especially during the overnight and morning hours. Before
  burning leaves or yard waste, check for local burn bans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

An Air Stagnation Advisory indicates that due to limited movement
of an air mass across the advisory area...pollution will increase
to dangerous levels. Persons with respiratory illness should
follow their physicians advice for dealing with high levels of
air pollution.

&&

$$




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