4 thoughts on “Chicago: clearing storm

  1. A few days ago over here in western Iowa it looked like that for several hours. They said it was the smoke from the fires in Canada.

    1. That much smoke, you’d probably have been able to taste.
      I’m trying to remember the name of the oil well that blew out in about 1980 and shed up to 5ppm of hydrogen sulphide onto the streets of Edmonton, several hundred kilometres to the SW. The distances were smaller, but H2S is a lot more easily detected by the human nose. Sub-1ppm is well within most people’s detection capabilities.

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