Huge blaze destroyed store firm (9)

I believe the answer is:

firestorm

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'huge blaze' is the definition.
'firestorm' can be an answer for 'blaze' (I've seen this before). I'm not sure about the 'huge' bit.

'destroyed store firm' is the wordplay.
'destroyed' indicates anagramming the letters.
'store'+'firm'='storefirm'
'storefirm' anagrammed gives 'FIRESTORM'.

Can you help me to learn more?

(Other definitions for firestorm that I've seen before include "blaze" , "devastating thing" , "big blazer" .)

I've seen this clue in The Times.

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