Headline:
Freezing Fog Advisory issued December 2 at 4:44PM PST until December 3 at 11:00AM PST by NWS Portland OR
Event:
Freezing Fog Advisory
Urgency:
Expected
Effective:
December 2, 2024 - 4:44pm
Expires:
December 3, 2024 - 5:00am
Description:
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile
or less in areas of dense freezing 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, and East Central Willamette
Valley.
* WHEN...For the Freezing Fog Advisory, until 11 AM PST Tuesday. For
the Air Stagnation Advisory, until 4 AM PST Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Low visibility in areas of dense
freezing fog could make driving conditions hazardous.
* ADDITIONAL DETAILS...Dense fog will impact portions of the I-5
corridor from Salem to Eugene. Frost is possible on elevated
surfaces and grassy surfaces, as well as bridges and overpasses.
Instruction:
If driving, slow down and leave plenty of distance ahead of you.
Pedestrians and cyclists should wear bright or reflective clothing
to increase the chances of being seen by others in poor visibility
conditions.
State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.
People with respiratory illness should follow their physician's
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.
Area Description:
East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands
Forcast Office:
NWS Portland OR