Unless CKLW is on day pattern at night, there's absolutely no way you are getting them strong in Cincinnati. Maybe someone close by can confirm if CKLW's been having pattern issues.
I can't confirm anything. But I will say that CKLW's signal here does sometimes vary. Usually, as I said, it doesn't sound like 5,000 watts is being sent here. But once in a while it booms in. Sometimes it lasts for a day or two, but I can't recall the stronger signal for an extended period. So is it atmospheric conditions, pattern issue, or "forgetting" to go to the night pattern? I honestly have no idea.