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Where the hell does wind begin??
(lemmy.dbzer0.com)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
According to the link in the top comment (sorry for caps, copied it out of the image): COOL AIR TRAVELS TOWARDS WARM AIR OVER LAND.
So the warm air does push, but it pushes upwards (rises). Cool, low pressure air, then fills the void.
This clarification brought to you by another non-expert in the field. Ha