Smart dons modelled certain type of weather (9)

I believe the answer is:

sandstorm

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'certain type of weather' is the definition.
I can't tell whether this definition defines the answer.

'smart dons modelled' is the wordplay.
'modelled' indicates an anagram (letters modelled or shaped).
'smart'+'dons'='smartdons'
'smartdons' with letters rearranged gives 'SANDSTORM'.

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(Other definitions for sandstorm that I've seen before include "that's gritty and violent" , "Desert hazard" , "Desert peril" , "Result of strong desert wind" .)

I've seen this clue in The Times.

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