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Air Quality in the Gorge
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exgolfer



Joined: 11 Jun 2012
Posts: 32

PostPosted: Fri Sep 11, 2020 12:09 pm    Post subject: Air Quality in the Gorge Reply with quote

while smoke is a minor problem compared to what many in the western states have suffered and are facing, the address below seems a good site to monitor the Air Quality Index in real time and determine when its OK to go outdoors!

https://aqicn.org/city/usa/washington/mobile/whitesalmon
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30knotwind



Joined: 30 Aug 2005
Posts: 233
Location: White Salmon, WA

PostPosted: Fri Sep 11, 2020 3:23 pm    Post subject: Reply with quote

Thx, good link. Not looking good for getting outside soon.
Also like the one you posted elsewhere, with history
https://aqicn.org/map/usa/washington/mobile/whitesalmon/m/

Satellite loop is good here:
https://www.windy.com/-Satellite-satellite?satellite,43.517,-120.245,6

Chris

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windfind



Joined: 18 Mar 1997
Posts: 1687

PostPosted: Fri Sep 11, 2020 7:23 pm    Post subject: Reply with quote

Animation of smoke imagery.

Mike Godsey
iwindsurf.com/ikitesurf.com
Weatheflow.com



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westender



Joined: 02 Aug 2007
Posts: 1246
Location: Portland / Gorge

PostPosted: Fri Sep 11, 2020 8:34 pm    Post subject: No yellow sky Reply with quote

Crazy


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hrwindsurfing



Joined: 29 May 2007
Posts: 47

PostPosted: Fri Sep 11, 2020 9:47 pm    Post subject: Why the Differing numbers? Reply with quote

I'm looking at the link given on iWindsurf forum, for the 762 air quality index. When I went to the link provided by the WA Dept of Ecology:

https://enviwa.ecology.wa.gov/home/map

It shows the max of 500, but you can click on the White Salmon Link, and the additional link to "more site information", and it shows the PM2.5 at 890.9 at 17:00. The link on the forum shows the graph with a max of 762. Any reason for the difference? Could it be the time of day?

Thanks, wondering whose number is more accurate.
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westender



Joined: 02 Aug 2007
Posts: 1246
Location: Portland / Gorge

PostPosted: Fri Sep 11, 2020 10:42 pm    Post subject: Reply with quote

HR had been bouncing around 500 most of the day and was when I saw the 762 across the river. It was shocking enough to me that I thought I'd document that to the discussion. It was from the https://aqicn.org/map/oregon/ page.

Maybe the sensor calibration has problems at the top of the scale??
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30knotwind



Joined: 30 Aug 2005
Posts: 233
Location: White Salmon, WA

PostPosted: Sat Sep 12, 2020 10:36 am    Post subject: Reply with quote

Good animation of forecast. Looks like no relief in the near future.
https://www.windy.com/-PM2-5-pm2p5?cams,pm2p5,45.600,-121.187,5



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windfind



Joined: 18 Mar 1997
Posts: 1687

PostPosted: Sun Sep 13, 2020 9:06 am    Post subject: Reply with quote

Hi Gang,

The air quality here in White Salmon is significantly worse than Portland and far worse than the San Francisco Bay Area as you can see in the data from 6:57 AM.

This is due to the walls of the Gorge trapping the polluted air much like it captures the winter time fog inversion.

Our only hope is the upper trough at ≈ 18,000 ft. that has a trajectory towards the Pacific Northwest. Unfortunately, it is looking like it might turn into a Cut-Off Low that would have it wobbling around to our west. Matt will cover this in more detail in the forecast.

Mike Godsey
iwindsurf.com/ikitesurf.com
Weatheflow.com



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mac



Joined: 07 Mar 1999
Posts: 15526
Location: Berkeley, California

PostPosted: Sun Sep 13, 2020 7:46 pm    Post subject: Reply with quote

There is another problem with the particulate data. There are two kinds of devices. The less expensive one, used by the purple network in the Bay area, measures optical back-scatter, an indirect way of measuring particulates. That is a less accurate, much cheaper technique.
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JamesHardy



Joined: 29 Mar 2002
Posts: 148

PostPosted: Sat Sep 19, 2020 12:28 am    Post subject: Reply with quote

mac wrote:
There is another problem with the particulate data. There are two kinds of devices. The less expensive one, used by the purple network in the Bay area, measures optical back-scatter, an indirect way of measuring particulates. That is a less accurate, much cheaper technique.

With the fires being what they are your thinking is a little off its like saying that non-filtered cigarettes are worse the filtered cigarettes? Dude when the air quality levels get to the levels they are there F**ked-up! It's like my Vegan neighbors being pissed because I'm sitting in my backyard smoking a cigar, WTF?
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