It comes out about right, resulting in a chilling disturbance (3,5)

I believe the answer is:

ice storm

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'a chilling disturbance' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'it comes out about right' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'about' indicates putting letters inside.
'right' becomes 'r' (common abbreviation).
'it'+'comes'='itcomes'
'itcomes' anagrammed gives 'icestom'.
'icestom' enclosing 'r' is 'ICE STORM'.

'resulting in' is the link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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