I don’t know where Mark got that map but it wasn’t NOAA or anywhere else I looked. We’re looking at teens for lows, not zero or colder.
The salt IS crystallized because it’s crystals to begin with. They put brine down the other night when it snowed and now it’s dried on the roads. Cars drive over it and kick the salt dust into the air and we have a haze all over the area. It hurt to breathe while I was out and felt like needles in my eyes. No fun at all.
That would be very painful and I’m sorry you did have to go out in it. I hope Lake is doing ok.