Okanogan Valley Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Air Stagnation Advisory
Issued: 9:09 AM PST Nov. 21, 2018 – National Weather Service

... Air stagnation advisory now in effect until noon PST

* air quality... light winds and stable conditions will persist
through Thursday morning.

* Timing... through Thursday morning. Increasing winds and
precipitation Thursday and Friday will improve ground level

* Impacts... air quality will be locally degraded through Thursday
morning. 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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