Fri. Jul 19th, 2019

Stagnant air, Woodstove and Slash Burning Combining for poor Air Quality

  • Vancouver Island Inland Sections Forecast - No watches or warnings in effect.

    Forecast Issued 11:00 AM PDT Friday 19 July 2019 - Friday: A mix of sun and cloud. High 24. UV index 7 or high. Friday night: Clearing late this evening. Low 10. Saturday: Sunny. High 27. UV index 8 or very high. Saturday night: Cloudy periods. Low 8. Sunday: Sunny. High 29. Sunday night: Clear. Low 11. Monday: Sunny. High 26. Monday night: Clear. Low 14. Tuesday: Sunny. High 25. Tuesday night: Clear. Low 13. Wednesday: Sunny. High 22. Wednesday night: Clear. Low 12. Thursday: Sunny. High 23.

  • Current Conditions
    17.9° C
    2.1 ° C/hr
    102.02 kPa
    NNE 2 km/h
    gusting 6 km/h
    69 %
    Rain Rate
    0.0 mm/hr
    Wind Chill
    17.9° C
    Heat Index
    17.9° C
    12.2° C
    838 W/m2
    Last Updated: 11:25:00 PDT
    Click to Refresh or See All Conditions
  • Today's Almanac
    Rain since Midnight
    0.3 mm
    Continuous Rainfall (< 24hr gap)
    7.6 mm since
    July 18, 2019 00:07
    Civil Rise
    Moon Phase
    Waning gibbous (92% full)
    Civil Set
    Day Length
    Day High
    18.1° C @ 11:12 Tdy.
    Day Low
    10.8° C @ 02:50 Tdy.
    Day High Rain Rate
    Day High Barometer
    102.02 kPa @ 08:59 Tdy.
    Day Low Barometer
    101.77 kPa @ 00:29 Tdy.
    Day Low Windchill
    10.8° C @ 02:50 Tdy.
    Day High Heat Index
    18.1° C @ 11:12 Tdy.
    Day High Wind Gust
    S 3km/h @ 09:45 Tdy.
    Day High Solar Radiation
    874W/m2 @ 10:39 Tdy.
    Day High UV Index
    4.7 @ 11:19 Tdy.

No official Advisories have been issued, but given the current weather pattern with no wind and cool temperatures, and with slash burning now beginning around the Valley, the Air Quality particulate measures in the City are quickly rising.

the glow from the slash burning on the Beauforts on Monday November 2, 2015

Here is the current air quality data as at 10AM… just hitting the threshold (25ug/m3) for an advisory as you can see it now in red.  It will have to stay there and be predicted to stay there for a while before they issue an advisory.

Screen Shot 2015-11-03 at 10.34.21 AM Screen Shot 2015-11-03 at 10.34.04 AM Screen Shot 2015-11-03 at 10.34.13 AM

That said, I would not be surprised if we see an Air Quality Advisory issued today or tomorrow at least until we get the next weather system pushing through on Thursday/Friday.

Things that contribute to this poor air quality:

  • Old Woodstoves.  If you have a non-EPA certified wood stoves you should get it replaced
  • Outdoor Burning.  It would be best not to burn outdoors at all (and it will be banned permanently within City limits starting next spring).  But if you must, then do so when it is windy, or raining, or both.
  • Slash Burning.  The same applies.

3 thoughts on “Stagnant air, Woodstove and Slash Burning Combining for poor Air Quality

  1. “… it will be banned permanently within City limits starting next spring”?
    They ARE joking, aren’t they?

  2. “…it will be banned permanently within City limits starting next spring”
    How authoritarian. Even on one’s own property?

    1. It is actually rare these days to find places outside Vancouver Island that do *not* ban outdoor burning. Yes, on ones own property. The smoke it creates is highly detrimental to the public, and our Valley geography makes the issue even worse. If things need to be burned they should be burned in proper appliances like EPA-certified stoves that emit a tiny amount of particulate in comparison to uncontrolled outdoor burning.

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