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Air Stagnation Advisory issued January 15 at 9:36AM PST until January 16 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Freezing Fog Advisory, visibility of less than a quarter of mile in freezing fog. For the Air Stagnation Advisory, 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...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Air Stagnation Advisory issued January 15 at 9:36AM PST until January 16 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* 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...Lake County and eastern Klamath County, South Central Oregon Coast, Eastern Douglas County Foothills, and Klamath Basin. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS

Freezing Fog Advisory issued January 15 at 9:36AM PST until January 15 at 12:00PM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Freezing Fog Advisory, visibility of less than a quarter of mile in freezing fog. For the Air Stagnation Advisory, 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...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Dense Fog Advisory issued January 15 at 9:36AM PST until January 15 at 12:00PM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Dense Fog Advisory, visibility of less than a quarter of a mile in dense fog. For the Air Stagnation Advisory, 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...Valleys in central Douglas County. This includes Roseburg, Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and surrounding areas. * WHEN...For the Dense Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Air Stagnation Advisory issued January 15 at 8:25AM PST until January 16 at 10:00AM PST by NWS Portland OR

2 months 3 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, light winds and limited air movements will lead to a period of stagnant air conditions. * WHERE...Lane County Lowlands. * WHEN...For the Dense Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous.
NWS

Dense Fog Advisory issued January 15 at 8:25AM PST until January 15 at 12:00PM PST by NWS Portland OR

2 months 3 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, light winds and limited air movements will lead to a period of stagnant air conditions. * WHERE...Lane County Lowlands. * WHEN...For the Dense Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous.
NWS

Special Weather Statement issued January 15 at 6:11AM PST by NWS Pendleton OR

2 months 3 weeks ago
Patchy dense freezing fog has been observed across north central Oregon as well as the Lower Columbia Basin of Oregon and the Blue Mountain Foothills. The visibility is less than one half mile in places. This includes Highway 11 near Weston, Interstate 84 in Hermiston, and Highways 97 and 197 north of Madras. Drivers should expect a sudden reduction in visibility as well as black ice on the roadways.
NWS

Special Weather Statement issued January 15 at 2:59AM PST by NWS Pendleton OR

2 months 3 weeks ago
Patchy dense freezing fog has been observed across north central Oregon as well as the Lower Columbia Basin of Oregon and the Blue Mountain Foothills. The visibility is less than one half mile in places. This includes Highway 11 near Weston, Interstate 84 in Hermiston, and Highways 97 and 197 north of Madras. Drivers should expect a sudden reduction in visibility as well as black ice on the roadways.
NWS

Air Stagnation Advisory issued January 15 at 3:41AM MST until January 17 at 11:00AM MST by NWS Boise ID

2 months 3 weeks ago
* 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...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS

Air Stagnation Advisory issued January 15 at 12:17AM PST until January 16 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in freezing fog. For the Air Stagnation Advisory, 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...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Air Stagnation Advisory issued January 15 at 12:17AM PST until January 16 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* 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...Valleys in near the South Central Oregon Coast and in the Eastern Douglas County Foothills, and east of the Cascades in Klamath and Lake Counties. This includes the cities of Coquille, Myrtle Point, Steamboat, Klamath Falls, Chiloquin, Crescent, Lakeview, Paisley, Silver Lake and surrounding areas. * 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Air Stagnation Advisory issued January 15 at 12:17AM PST until January 16 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, 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...Valleys in central Douglas County. This includes Roseburg, Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and surrounding areas. * WHEN...For the Dense Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Dense Fog Advisory issued January 15 at 12:17AM PST until January 15 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, 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...Valleys in central Douglas County. This includes Roseburg, Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and surrounding areas. * WHEN...For the Dense Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS

Freezing Fog Advisory issued January 15 at 12:17AM PST until January 15 at 10:00AM PST by NWS Medford OR

2 months 3 weeks ago
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in freezing fog. For the Air Stagnation Advisory, 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...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. 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 are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion.
NWS