One product issued by NWS for: Hillsboro OR
Air Stagnation Advisory
URGENT - WEATHER MESSAGE National Weather Service Portland OR 403 PM PST Thu Dec 5 2024 ORZ104-105-108-109-113>115-123>125-WAZ202-204-205-208-061515- /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ North Oregon Coast Range Lowlands-Central Oregon Coast Range Lowlands-Lower Columbia River-Tualatin Valley-Outer Southeast Portland Metro-West Central Willamette Valley-East Central Willamette Valley-Clackamas County Cascade Foothills-Cascade Foothills of Marion and Linn Counties-Lane County Cascade Foothills-Willapa and Wahkiakum Lowlands-Cowlitz County Lowlands- North Clark County Lowlands-South Washington Cascade Foothills- Including the cities of Zigzag, Deadwood, Clark County Fairgrounds, Mapleton, Welches, Battle Ground, Heisson, Cherryville, Blaine, Cottage Grove Lake, Farmington, Blodgett, Dorena, Necanicum, Scappoose, Oakridge, Beaverton, Rhododendron, Hockinson, Fargher Lake, Boring, Proebstel, Camp Bonneville, Menlo, Warren, Alston, St. Helens, Tualatin, Three Lynx, Green Peter Reservoir, Mayger, Klaskanine Summit, Svenson, Holley, Dorena Reservoir, Vida, Kelso, Longview, Rose Valley, Tiernan, Spitzenberg, Hillsboro, Orchards, Alsea, Willapa, Brightwood, Shortys Corner, Vernonia, Swisshome, Tigard, Salem, Aloha, Cascadia, Sifton, West Salem, Pigeon Springs, Burnt Woods, and Blue River 403 PM PST Thu Dec 5 2024 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... * WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Central Willamette Valley, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. People with respiratory illness should follow their physician`s advice for dealing with high levels of air pollution during periods of stagnant air, especially if an Air Quality Alert is in effect for your area. To see if an Air Quality Alert is in effect for your area, go to www.weather.gov/pqr and left-click your location on the homepage map display. Alternatively, you could also type your location into the search bar found on the top-left hand side of the homepage. From there, you will see an Air Quality Alert listed at the top if one is in effect for your location; you can click the alert to read more details if applicable. && $$