"intensely powerful" is a correct and usable phrase in written English.
You can use it to describe something that has a great amount of strength, energy, or force. For example: "The storm was intensely powerful, tearing down trees and damaging homes in the area."
That contributes to the novel's intensely powerful alchemy: you experience the same claustrophobia as Emma Bovary.
And the performances by Lauren Flanigan as Eve and Beth Clayton as Lilith are intensely powerful.
It's like trying to bring two intensely powerful magnets together, north pole to north pole.
But anger can be intensely powerful: how would anyone fight injustice without being angry that it exists at all?
For both of them, the African landscape was intensely powerful, even redemptive, and it held them together.
I was particularly moved by the last paragraph, which is restrained yet intensely powerful within the context of this story.
Over three days of intense arguments on the future of President Obama's health care law, the public got a vivid glimpse of an institution at once immensely powerful and intensely human, one packed with brainy, funny and assertive justices prepared to confront and decide the most urgent issues of the day.
Today's hearing had been much anticipated in Boston, since it was the first time that William Bulger, an immensely powerful yet intensely private self-made political figure from South Boston, had been asked to talk publicly about his brother, a face on the F.B.I.'s Most Wanted posters.
The Satmar, the intensely devout, politically powerful ultra-Orthodox sect, demanded that the police find his killer.
And Meryl Streep is a knockout in the Angela Lansbury role, as Mr. Schreiber's powerful, intensely manipulative mother.
And Ms. Wood delivers a powerful, intensely believable Act II scene in which depression and hopelessness build to waves of tears.
