There could be no tsunami here in America! (5,9)

I believe the answer is:

rocky mountains

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'in america' is the definition.
(I know that Rocky Mountains is part of North America)

'there could be no tsunami' is the wordplay.
'there' becomes 'rocky' (I am not sure about this - if you are sure you should believe this answer much more).
'could be' is an anagram indicator.
'no'+'tsunami'='notsunami'
'notsunami' anagrammed gives 'mountains'.
'rocky'+'mountains'='ROCKY MOUNTAINS'

'here' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Another definition for rocky mountains that I've seen is " American skyscrapers".)

I've seen this clue in The Telegraph.

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