COAST RANGE OF NORTHWEST OREGON-
CENTRAL COAST RANGE OF WESTERN OREGON-
NORTHERN OREGON CASCADE FOOTHILLS-
CASCADE FOOTHILLS IN LANE COUNTY-UPPER HOOD RIVER VALLEY-
WILLAPA HILLS-SOUTH WASHINGTON CASCADE FOOTHILLS-
INCLUDING THE CITIES OF VERNONIA, JEWELL, SUNSET SUMMIT,
LEES CAMP, TRASK, GRANDE RONDE, BURNT WOODS, TIDEWATER,
SWISSHOME, VENETA, SANDY, ESTACADA, SWEET HOME, VIDA, JASPER,
LOWELL, COTTAGE GROVE, ODELL, WILLAPA, FRANCES, RYDERWOOD,
TOUTLE, LAKE MERWIN, YALE LAKE, AND COUGAR
406 AM PST WED DEC 2 2020

…AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY BELOW 1500 FEET…

* WHAT…POOR AIR QUALITY EXPECTED BELOW 1500 FEET.

* WHERE…IN WASHINGTON, SOUTH WASHINGTON CASCADE FOOTHILLS AND
WILLAPA HILLS. IN OREGON, COAST RANGE OF NORTHWEST OREGON,
NORTHERN OREGON CASCADE FOOTHILLS, CENTRAL COAST RANGE OF
WESTERN OREGON, UPPER HOOD RIVER VALLEY AND CASCADE FOOTHILLS
IN LANE COUNTY.

* WHEN…UNTIL 10 AM PST SATURDAY.

* IMPACTS…POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS.

* ADDITIONAL DETAILS…VERY LIGHT WINDS, COUPLED WITH A STRONG
TEMPERATURE INVERSION, WILL CONTRIBUTE TO LITTLE AIR MOVEMENT
FOR LOWLANDS AREAS. BECAUSE OF THESE CONDITIONS, SOME
POLLUTANT LEVELS COULD INCREASE THROUGH SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

PEOPLE WITH RESPIRATORY ILLNESS SHOULD FOLLOW THEIR PHYSICIAN’S
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.

&&

$$

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT
HTTPS://WEATHER.GOV/PORTLAND