It's highly exposed during a storm (3)

I believe the answer is:

tor

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'it's highly exposed' is the definition.
I can't judge whether this defines the answer.

'during a storm' is the wordplay.
'during' says the answer is hidden in the clue.
'TOR' can be found hidden inside 'storm'.

Can you help me to learn more?

(Other definitions for tor that I've seen before include "Rot on rocky peak" , "Feature of Dartmoor" , "Rocky outcrop" , "Rocky height, eg Mam" , "A rocky hill in Devon" .)

I've seen this clue in the Evening Standard.

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