Weather Alerts for Columbia

Issued by the National Weather Service

Air Stagnation Advisory  AIR STAGNATION ADVISORY   Air Stagnation Advisory
COLUMBIA

Areas Affected:
East Slopes of the Washington Cascades - Eastern Columbia River Gorge of Washington - Foothills of the Blue Mountains of Washington - Kittitas Valley - Lower Columbia Basin of Washington - Simcoe Highlands - Yakima Valley
Effective: Tue 10:24 pm Updated: Wed 10:30 am Urgency: Expected
Expires: Fri 10:00 am Severity: Minor Certainty: Likely

 
Details:
...STAGNANT AIR CONDITIONS CONTINUE INTO FRIDAY...
...AREAS OF DENSE FREEZING FOG FOR THE FOOTHILLS OF THE SOUTHERN
BLUE MOUNTAINS AND PORTIONS OF NORTH CENTRAL AND CENTRAL OREGON
UNTIL NOON WEDNESDAY...
.An upper level ridge will persist over the Pacific Northwest.
This ridge will cause air movement to be limited over large
portions of the region. Areas of freezing fog will be possible
and the air quality will become unhealthy at times.
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
* AIR QUALITY...Moderate to unhealthy at times.
* TIMING...Stagnant air to persist for several more days.
* IMPACTS...Persons with respiratory issues should follow the
advice of their physician on how to deal with poor air
quality. Also outdoor burning may be limited, so please
consult with your local burn agencies.

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