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2 products issued by NWS for: West Seattle WA
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Air Quality Alert

WAC009-027-029-031-033-035-041-045-053-055-057-061-067-073-200015-
Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Lewis-Mason-Pierce-
San Juan-Skagit-Snohomish-Thurston-Whatcom-
1131 AM PDT Sat Aug 18 2018

...AIR QUALITY ALERT IN EFFECT FROM 10 AM SUNDAY TO 5 PM PDT
WEDNESDAY...

An Air Quality Alert has been issued by the National Weather Service
in Seattle, in cooperation with Washington State Department of
Ecology and other local agencies. It is in effect from 10 AM Sunday
to 5 PM PDT Wednesday.

Unhealthy air will become common across Western Washington due to
the large wildfires currently burning in the Washington Cascades and
British Columbia. Some improvement in ventilation is expected late
on Wednesday.

Pollutants in smoke can cause burning eyes...runny nose...aggravate
heart and lung diseases...and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Follow advice from your physician or other medical
services if you have a heart or respiratory condition.

For additional information on wildland fire smoke impacting
Washington visit the Washington smoke blog at
http://wasmoke.blogspot.com

For current Washington air quality levels, visit
https://fortress.wa.gov/ecy/enviwa/ or airnow.gov.

You may also contact your local air quality agency.

Information about air quality is on the Washington Department of
Ecology Web site at http://www.ecy.wa.gov/air.html

$$

www.weather.gov/seattle



Special Weather Statement

Special Weather Statement
National Weather Service Seattle WA
924 AM PDT Sat Aug 18 2018

WAZ001-503-504-506-507-509>517-555-556-558-559-567>569-191630-
San Juan County-Western Whatcom County-Southwest Interior-
Western Skagit County-Everett and Vicinity-Tacoma Area-
Admiralty Inlet Area-Hood Canal Area-Lower Chehalis Valley Area-
Olympics-Eastern Strait of Juan de Fuca-
Western Strait of Juan De Fuca-North Coast-Central Coast-
East Puget Sound Lowlands-Bellevue and Vicinity-
Seattle and Vicinity-Bremerton and Vicinity-
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
924 AM PDT Sat Aug 18 2018


...SMOKE INFILTRATING PARTS OF WESTERN WASHINGTON TODAY AND
BECOMING MORE WIDESPREAD TONIGHT INTO SUNDAY MORNING...

Wildfires on Vancouver Island producing low level smoke has
drifted southeast, infiltrating parts of Clallam and Jefferson
counties. Air quality for sensitive groups is occurring and should
be expected today with a period of slight improvement later today
or tonight as the flow switches offshore. This will eventually
worsen air quality along the Strait and other areas of Clallam
and Jefferson counties by Sunday morning. Air quality will likely
deteriorate further to unhealthy levels Sunday through Tuesday.

Smoke from British Columbia wildfires can be seen on visible
satellite imagery moving into the north and central Cascades, and
north interior from the northeast. Elevated smoke will likely
increase today over other parts of Western Washington. This smoke
will gradually mix down and start to affect air quality at the
surface in the north interior, Olympic Peninsula, and Cascades
Sunday morning. Air quality will likely deteriorate over most
remaining areas of Western Washington Sunday afternoon into early
next week. An air quality alert may be issued later today for the
Sunday to Tuesday time period. Continue to monitor forecasts as
updates are likely today.

Temperatures on Monday and Tuesday will be in the 80s to low 90s.
A marine push developing Wednesday may begin to improve air
quality to some degree.

$$

www.weather.gov/seattle
Mercer



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