Had weather vaned a minor brainstorm

[cooliegirly]

What does it mean when someone "had weather vaned a minor brainstorm"?

[Yankee]

Hi Cooliegirly

Whoever wrote the sentence was playing with words and expressions (purposely mixing them up):

weather a storm
weathervane
brainstorm

Without any further context it's impossible to say with certainty what the writer was trying to convey.
Maybe that someone had 'suffered and survived ("weathered") a minor disturbence of the mind ("brainstorm") and now knows which is the right direction ("weathervane")'.

Just a guess...

Amy
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Amy
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ESL teacher, translator, and a native speaker of American English