Sorcerer ultimately in two minds about tempest (9)

I believe the answer is:

windstorm

'tempest' is the definition.
(thesaurus)

'sorcerer ultimately in two minds about' is the wordplay.
'ultimately' says to take the final letters.
'in' indicates putting letters inside.
'about' indicates an anagram.
The last letter of 'sorcerer' is 'r'.
'two'+'minds'='twominds'
'twominds' with letters rearranged gives 'windstom'.
'r' going inside 'windstom' is 'WINDSTORM'.

(Another definition for windstorm that I've seen is " Tornado".)

I've seen this clue in The Independent.

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