The height of a severe storm (7)

I believe the answer is:

everest

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'the height' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'of a severe storm' is the wordplay.
'of' indicates the answer is hidden within the clue.
'EVEREST' can be found hidden inside 'severe storm'.

Can you help me to learn more?

(Other definitions for everest that I've seen before include "A high spot" , "Himalayan mount" , "Huge achievement - highest climb" , "The highest mountain of all (7)" , "Highest peak" .)

I've seen this clue in The Irish News.

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