Meanings of horrifying clarity in English

Suddenly, I froze, paralyzed by a thought that came unbidden yet with horrifying clarity.

Creating hallucinations and pain at this level of horrifying clarity?

And again in his head, he heard with horrifying clarity the gruff voice saying, 'This is not a dream!'

Such normalcy amid horror only increases my revulsion -for this, in all its horrifying clarity, is the embodiment of Hannah Arendt's "banality of evil".