It being an exceptionally clear evening, I went up to the roof and did the binocular trick looking south and this is some of what I caught.
Above: over Simcoe Island, a laker and a lighthouse. The light may well be the East Charity Shoals Light I saw from Cape Vincent facing fairly straight west from there. Correction: This is a lighthouse on Pigeon Island about 4 miles south west of the nearest tip of Wolfe Island and 4 miles northwest of the East Charity Light. The Laker route is quite far south as well, staying beyond the US boundary. I'd estimate the Pigeon Island Light would be about 20 km from here and that Laker about 25 km. Here is the entire photo taken through the binoculars.
Above: over Simcoe Island, the plume at Nine Mile Pt, NY, near Oswego. The nuclear plant would be about 75 km straight south of here. See this article on the search for the plume. Here is the entire photo taken through the binoculars. You'll notice that the actual 543 cooling tower is under the horizon.
Above: this view again over the west tip of Simcoe shows islands on the horizon which may well be Main Duck Island and its neighbour to the left whose name I do not know yet. The gap between the islands is about 35 km south south west of here. Here is the entire photo taken through the binoculars.
Above: One more. I think the white thing is the East Charity Shoals Light which would be about 22 km south south east of here. Below left is a blow-up of that portion of the photo. Right is a US Coast Guard image. I need to get out the compass one clear day to check all these guesses.