Current Watches, Warnings and Advisories for Oregon Issued by the National Weather Service - Last Update: Wednesday 13th of December 2017 02:57:00 PM            Air Stagnation Advisory issued December 13 at 2:57PM PST until December 15 at 10:00AM PST by NWS            ...STAGNANT AIR CONDITIONS CONTINUE INTO FRIDAY... .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 - Last Update: Wednesday 13th of December 2017 01:00:00 PM            Air Quality Alert issued December 13 at 1:00PM PST by NWS            ...AIR QUALITY ADVISORY FROM THE OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY FOR NORTHERN HARNEY COUNTY, THE LOWER TREASURE VALLEY OF OREGON AND THE BAKER VALLEY... The Oregon Department of Environmental Quality has issued an Air Quality Advisory for Northern Harney County, the Lower Treasure Valley of Oregon and the Baker Valley due to elevated pollutant - Last Update: Wednesday 13th of December 2017 11:24:00 AM            Air Stagnation Advisory issued December 13 at 11:24AM PST until December 14 at 2:00PM PST by NWS            ...STAGNANT AIR CONDITIONS EXPECTED THROUGH THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon. - Last Update: Wednesday 13th of December 2017 11:24:00 AM            Air Stagnation Advisory issued December 13 at 11:24AM PST until December 14 at 2:00PM PST by NWS            ...STAGNANT AIR CONDITIONS EXPECTED THROUGH THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon. - Last Update: Wednesday 13th of December 2017 11:24:00 AM            Air Stagnation Advisory issued December 13 at 11:24AM PST until December 14 at 2:00PM PST by NWS            ...STAGNANT AIR CONDITIONS EXPECTED THROUGH THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... ...FREEZING FOG ADVISORY IS CANCELLED... The National Weather Service in Portland has cancelled the Freezing Fog Advisory. - Last Update: Wednesday 13th of December 2017 09:10:00 AM            Air Stagnation Advisory issued December 13 at 9:10AM PST until December 15 at 10:00AM PST by NWS            ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST FRIDAY... * Air stagnation locations include: All inland valleys. * Impacts: Limited ventilation will result in degraded air quality, which may pose a risk to those working outside and to those with sensitive health issues.            Current Watches, Warnings and Advisories for Washington Issued by the National Weather Service - Last Update: Wednesday 13th of December 2017 02:57:00 PM            Air Stagnation Advisory issued December 13 at 2:57PM PST until December 15 at 10:00AM PST by NWS            ...STAGNANT AIR CONDITIONS CONTINUE INTO FRIDAY... .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 - Last Update: Wednesday 13th of December 2017 01:27:00 PM            Air Stagnation Advisory issued December 13 at 1:27PM PST until December 14 at 2:00PM PST by NWS            ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Dry conditions, light winds and poor mixing has lead to stagnant conditions in the interior lowlands. Stagnant conditions will trap pollutants near the surface which will lead to deteriorating air quality. - Last Update: Wednesday 13th of December 2017 11:35:00 AM            Air Stagnation Advisory issued December 13 at 11:35AM PST until December 15 at 10:00AM PST by NWS            ...AIR STAGNATION ADVISORY CONTINUES THROUGH FRIDAY MORNING... Our stagnant weather pattern is not expected to change until the arrival of a weak frontal system on Friday. Until then, a strong temperature inversion will remain over Washington and Idaho. Winds will also be weak heightening the potential for the build up of air pollution. - Last Update: Wednesday 13th of December 2017 11:24:00 AM            Air Stagnation Advisory issued December 13 at 11:24AM PST until December 14 at 2:00PM PST by NWS            ...STAGNANT AIR CONDITIONS EXPECTED THROUGH THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon. - Last Update: Wednesday 13th of December 2017 11:24:00 AM            Air Stagnation Advisory issued December 13 at 11:24AM PST until December 14 at 2:00PM PST by NWS            ...STAGNANT AIR CONDITIONS EXPECTED THROUGH THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon.

      

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