Non-Precipitation Warning, Watch or Advisory


092 
WWUS76 KMFR 130656
NPWMFR
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1056 PM PST Tue Dec 12 2017
ORZ023-131700-
/O.CON.KMFR.AS.Y.0005.000000T0000Z-171215T1800Z/
/O.CON.KMFR.FG.Y.0016.171213T0800Z-171213T1700Z/
Central Douglas County-
Including the cities of Drain, Elkton, Roseburg, Sutherlin, 
Green, Myrtle Creek, and Canyonville
1056 PM PST Tue Dec 12 2017
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...
* Dense fog locations include...Valleys in the Umpqua Basin
  including Scottsburg and Elkton as well as from Tri-City to
  north of Drain along Interstate 5. 
* Impacts...Poor visibility, less than one quarter of a mile at 
  times, will make travel difficult. This morning, the dense fog 
  may become freezing fog and create slippery roads with 
  additional travel difficulties. 
* 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. 
* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 
Precautionary/preparedness actions...
A Dense Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile.
* If driving, slow down and leave plenty of distance ahead of 
  you.
* Use low beams. High beams reflect back thick fog, making 
  visibility worse for you and other drivers. 
An air stagnation advisory indicates that due to limited movement
of an air mass across the advisory area, pollution will increase.
&&
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ORZ024-026-131700-
/O.CON.KMFR.AS.Y.0005.000000T0000Z-171215T1800Z/
/O.CON.KMFR.ZF.Y.0007.171213T0800Z-171213T1700Z/
Eastern Curry County and Josephine County-Jackson County-
Including the cities of Grants Pass, Cave Junction, Medford, 
and Ashland
1056 PM PST Tue Dec 12 2017
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...
* Freezing fog locations include...Portions of the Rogue and
  Illinois Valleys, including Medford, Rogue River, Grants Pass 
  and Cave Junction. 
* Impacts...Poor visibility, less than one quarter of a mile at 
  times, will make travel difficult. In addition, frost may 
  develop on area roads, making them very slippery. Please use 
  extra caution if driving. 
* 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. 
* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 
Precautionary/preparedness actions...
A Freezing Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile. Also, be alert for frost
on bridge decks causing slippery roads.
* Slow down and give 3 times as much space as normal between 
  vehicles. 
* Shaded areas may be more slippery than unshaded areas.
* Use low beams. High beams reflect back fog making visibility 
  worse for you and other drivers. 
An air stagnation advisory indicates that due to limited movement
of an air mass across the advisory area, pollution will increase.
&&
$$
ORZ029>031-131700-
/O.CON.KMFR.AS.Y.0005.000000T0000Z-171215T1800Z/
Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Altamont, Klamath Falls, Beatty, Bly, 
Crescent, Gilchrist, Sprague River, Adel, and Lakeview
1056 PM PST Tue Dec 12 2017
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
* Air stagnation locations include: All inland valleys.
* Impacts: Limited ventilation will result in degraded air 
  quality, which may pose a risk to those working outside and to 
  those with sensitive health issues. 
* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD 
Precautionary/preparedness actions...
An air stagnation advisory indicates that due to limited movement
of an air mass across the advisory area, pollution will increase.
&&
$$