Air Stagnation Advisory issued January 14 at 1:27PM MST until January 17 at 11:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest Idaho and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 14 at 8:06AM PST until January 16 at 10:00AM PST by NWS Portland OR
* WHAT...Poor air quality due to a period of stagnant air with light winds. * WHERE...Central Willamette Valley and South Willamette Valley. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 13 at 10:42AM PST until January 16 at 10:00AM PST by NWS Medford OR
* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...All inland valleys of southern Oregon, including but not limited to the Rogue, Illinois, Umpqua, and Klamath valleys. This includes the cities of Medford, Ashland, Klamath Falls, Roseburg, Grants Pass, Elkton, Canyonville, Cave Junction, Lakeview, Coquille, and Myrtle Point. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds
Air Stagnation Advisory issued January 13 at 1:24PM MST until January 17 at 11:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...From 9 PM MST /8 PM PST/ this evening to 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 9 at 9:54AM PST until January 10 at 12:00PM PST by NWS Medford OR
* WHAT...Strong valley inversions will result in weak winds, poor mixing and ventilation. This will result in stagnant air conditions that will trap pollutants near the surface. * WHERE...Lake County and eastern Klamath County, and Klamath Basin. This includes the cities of Klamath Falls and Lakeview. * WHEN...Until noon PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 9 at 1:15PM MST until January 10 at 11:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 8 at 2:14PM MST until January 10 at 11:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 7 at 2:45PM PST until January 10 at 12:00PM PST by NWS Medford OR
* WHAT...Strong valley inversions will result in weak winds, poor mixing and ventilation. This will result in stagnant air conditions that will trap pollutants near the surface. * WHERE...Central Douglas County, Eastern Curry County and Josephine County, Eastern Douglas County Foothills, and Jackson County. This includes the cities of Roseburg, Grants Pass, Cave Junction and Medford. * WHEN...Until noon PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Mixing and ventilation should be better at the south end of the Rogue Valley from around Talent to Ashland due to stronger SE winds.
Air Stagnation Advisory issued January 7 at 2:12PM MST until January 10 at 11:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 6 at 2:39PM PST until January 10 at 12:00PM PST by NWS Medford OR
* WHAT...Strong valley inversions will result in weak winds, poor mixing and ventilation. This will result in stagnant air conditions that will trap pollutants near the surface. * WHERE...Lake County and eastern Klamath County, and Klamath Basin. This includes the cities of Klamath Falls and Lakeview. * WHEN...From 10 AM Tuesday to noon PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.