This morning after having had my car parked in the sun for a couple of hours I poured water on the rear window to cool it (as described in this post). When I did so the mist that rose up from the window spiraled up in a way that was similar to a cyclone (but on a much smaller scale).

Would this have been caused by the steam rising off my car after I poured the water on? Or might the air have been moving in that pattern before and merely have been revealed by the water vapor?

It’s a pity I didn’t have my camera. My phone-camera doesn’t have anything close to the quality needed to make a movie of this (it would be doubtful even with my regular camera).

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