Crossword Genius

Scary weather report? (7)

Ross

I believe the answer is:

thunder

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'weather report?' is the definition.
The answer and definition can be both related to natural events as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for thunder that I've seen before include "Storm noise" , "Booming noise from the heavens" , "Move fast, noisily, and heavily" , "Booming noise after lightning" , "Heavenly claps?" .)

I've seen this clue in The Sun.
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