Western Washington Smoke: Darkest Earlier The Dawn
Ash was falling terminal nighttime unopen to Puget Sound, amongst white flakes apparent on many cars. And air character is terrible correct now, almost equally bad equally it has been during the entire extended event.
But relief is unopen at hand, amongst dramatic improvement guaranteed this night together with tomorrow.
Why together with thence bad now?
Because nosotros pick out had a conduit of lower-atmosphere winds from the fires over the North Cascades together with southern BC, straight into the Puget Sound region. Influenza A virus subtype H5N1 perfect fix air character degradation here. You tin run across the plumage of fume inwards the latest visible satellite imagery:
And it to a greater extent than that obvious inwards the forecast fume concentration for 8 AM from the NOAA/NWS HRRR fume plot. Apocalyptic. The vision of Smokezilla.
The small-scale particle concentrations (PM2.5) measured at Seattle (Dwamish) together with due north Seattle (Lake Forest Park) illustrates the sustained high values together with they pick out been ascent overnight to almost 150 micrograms per cubic meter. These are unhealthy levels together with twice those existence observed inwards Beijing correct now.
An number that has non been discussed is the effects on our temperatures. The dense fume has greatly reduced solar radiations reaching the surface. Although yesterday yet got to unopen to 90F inwards our area, without the smoke, temperatures belike would pick out surged to the mid to upper 90s.
But the most interesting number is our LOW temperatures. Notice how warm it has been at night? To illustrate, hither is a plot of the temperatures at SeaTac Airport for the terminal four weeks, amongst normal highs together with lows plotted. Notice how our depression temperatures pick out been crazy warm the terminal ii days? (see the dashed oval). Like 10F inwards a higher house normal. That is due to the fume layer, which acts equally a blanket, reducing the might of the surface to lose oestrus to infinite through infrared radiation.
Now the adept news. The halt (of the smoke) is near. The easterly catamenia inwards a higher house the Cascades has weakened, reducing the fume supply. And after today onshore catamenia should rev up, bringing inwards cooler, cleaner marine air.
Here is the HRRR fume forecast for v AM tomorrow morning. Clean air (white) is moving inland together with is almost to attain Seattle. Not adept for eastern Washington together with Idaho since the fume volition hold upwards blown eastward. And increasing winds could stoke the fires.
Finally, I am working on ii hereafter blogs on the wildfire issue, something that I pick out larn really interested in. The starting fourth dimension volition depict how our fume is non a "new normal" only a render to the "old normal" (there were far to a greater extent than fires together with fume during the early on 20th century together with before).
The minute volition speak almost the motility of this situation, amongst the telephone substitution number non existence climate modify (which does contribute) only our mismanagement of our forests, nearly a century of burn downward suppression, human intrusion into wildlands, together with flammable invasive species. And I volition propose that at that topographic point is a existent chance for a bipartisan, non-political endeavor to make our forests.
But relief is unopen at hand, amongst dramatic improvement guaranteed this night together with tomorrow.
Why together with thence bad now?
Because nosotros pick out had a conduit of lower-atmosphere winds from the fires over the North Cascades together with southern BC, straight into the Puget Sound region. Influenza A virus subtype H5N1 perfect fix air character degradation here. You tin run across the plumage of fume inwards the latest visible satellite imagery:
And it to a greater extent than that obvious inwards the forecast fume concentration for 8 AM from the NOAA/NWS HRRR fume plot. Apocalyptic. The vision of Smokezilla.
The small-scale particle concentrations (PM2.5) measured at Seattle (Dwamish) together with due north Seattle (Lake Forest Park) illustrates the sustained high values together with they pick out been ascent overnight to almost 150 micrograms per cubic meter. These are unhealthy levels together with twice those existence observed inwards Beijing correct now.
An number that has non been discussed is the effects on our temperatures. The dense fume has greatly reduced solar radiations reaching the surface. Although yesterday yet got to unopen to 90F inwards our area, without the smoke, temperatures belike would pick out surged to the mid to upper 90s.
But the most interesting number is our LOW temperatures. Notice how warm it has been at night? To illustrate, hither is a plot of the temperatures at SeaTac Airport for the terminal four weeks, amongst normal highs together with lows plotted. Notice how our depression temperatures pick out been crazy warm the terminal ii days? (see the dashed oval). Like 10F inwards a higher house normal. That is due to the fume layer, which acts equally a blanket, reducing the might of the surface to lose oestrus to infinite through infrared radiation.
Here is the HRRR fume forecast for v AM tomorrow morning. Clean air (white) is moving inland together with is almost to attain Seattle. Not adept for eastern Washington together with Idaho since the fume volition hold upwards blown eastward. And increasing winds could stoke the fires.
Finally, I am working on ii hereafter blogs on the wildfire issue, something that I pick out larn really interested in. The starting fourth dimension volition depict how our fume is non a "new normal" only a render to the "old normal" (there were far to a greater extent than fires together with fume during the early on 20th century together with before).
The minute volition speak almost the motility of this situation, amongst the telephone substitution number non existence climate modify (which does contribute) only our mismanagement of our forests, nearly a century of burn downward suppression, human intrusion into wildlands, together with flammable invasive species. And I volition propose that at that topographic point is a existent chance for a bipartisan, non-political endeavor to make our forests.
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