Crossword Genius

What the fire does when the wind blows (5)

Ross

I believe the answer is:

roars

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'blows' is the definition.
The definition and answer can be both related to natural events as well as being plural nouns.
Perhaps you can see a link between them that I can't see?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for roars that I've seen before include "Sounds like a lion" , "Deep bellows" , "Calls like lion" , "Bellows, hollers" , "Bellows like a bull" .)

I've seen this clue in the Evening Standard.
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