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Severe air stagnation advisory for Eugene,Ore.

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A low atmospheric pressure zone(inversion layer) has left the South Willamette Valley blanketed by a freezing fog. Two weeks has passed without the relief of rain or intermittent sunshine.

Monday evening found the National Weather Service (NOAA) broadcasting an “Air Stagnation Advisory” warning due to trapped pollution particulates. While this ‘man made’ weather phenomenon visits the valley yearly, this year seems a bit extreme to many long-term area residents as 2014 winter weather remains extremely dry and cold as earlier predicted by NOAA.

It’s recommended that you read the following warning copied from the NOAA bulletin.

AIR STAGNATION: STRONG INVERSION AND LIGHT WIND WILL ALLOW
POLLUTION TO CONTINUE TO INCREASE ACROSS THE AREA. A WEAK
WEATHER SYSTEM MAY BRING A BRIEF PERIOD OF IMPROVEMENT TO THE
AREA LATE TUESDAY NIGHT AND WEDNESDAY...BUT THE UPPER RIDGE
WILL REBUILD AND BRING MORE STAGNANT CONDITIONS TO THE AREA FOR
THE REMAINDER OF THIS WEEK...POSSIBLY INTO THE FIRST PART OF
THE FOLLOWING WEEK.

* TIMING: THROUGH FRIDAY MORNING.

* LOCATIONS INCLUDE: LONGVIEW...KELSO...EUGENE...CORVALLIS...
ALBANY...SALEM...MCMINNVILLE...ST. HELENS.

* IMPACTS: AIR QUALITY CAN BECOME UNHEALTHY AND AFFECT THE
YOUNG...ELDERLY AND THOSE WITH RESPIRATORY PROBLEMS.

Monday evening brought temperatures below freezing to the Crow, Lorane and Pleasant Valley region of Lane County. With near zero driving visibility experienced in most of the Central and Southern Willamette Valley, ODOT has recommended that drivers stay off of the road.

Leaving the valley Monday in search of sunshine we headed east on the Klamath Highway finding sun east of mile marker 19. While temperatures remained in the mid 30s, the sunny banks of the Willamette River was a welcomed relief from Eugene’s lingering fog.

With a chance of rain in the forecast for Tuesday, possible relief is on the way. Temporary, but welcomed. For those suffering from sunlight deprivation, the Central and North Oregon Coast weather forecast looks good for Thursday and Friday; with sunny days, low wind and daytime high temperatures in the 50s. See you there...

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