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Dense Fog Advisory issued December 1 at 4:42PM PST until December 2 at 11:00AM PST by NWS Portland OR

StormPrep

* 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 movement will lead to a period of stagnant air
conditions. This scenario could result in the build up of air
pollutants over time.

* WHERE…South Willamette Valley.

* WHEN…For the Dense Fog Advisory, until 11 AM PST Monday. For the
Air Stagnation Advisory, until 4 AM PST Thursday.

* IMPACTS…Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility could make driving
conditions hazardous.

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