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brianb
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« on: July 24, 2008, 02:08:30 pm » |
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Someone (leprechauns?) let off a very small atom bomb?
Seriously though we've got to look at the sky above. It's obviously unstable and humid. What I think has happened is that a bubble of nearly saturated air has found itself less dense than its surroundings, it's risen, some of the water vapour has condensed out (causing the mushroom shape) then the whole lot has got mixed up in the downdraft from the shower cloud above so it's evaporated away.
That "line cloud" above it looks really ominous, the sort of thing that sometimes spawns funnels!
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