Correct for ice already in the water (north pole, south pole margins). Land bound ice would flow into the oceans and raise the levels. Obviously not as high as Mount Everest all the way around.
I figure this supernatural event was, well, supernatural. The videos on that link are interesting and intriguing. Although they could also be from some remote warehouse in China I suppose.
And just like with the shroud, it probably won’t sway too many folks in what they already believe.
The glaciers in Alaska lead to water and are always calving. I don't think that raises the water levels as the towns are all along the water way. I have watched the calving and it goes on continually. been on two cruises but there are no floods of the towns...
Some of the breaking off is as big as a house or bus and you can hear the glacier booming all day...(Side note) the natives call it white thunder and it sounds like thunder as they crack and then fall... Of course if it all melted at once there would be floods until the water reaches its level but the waterways all lead to the ocean. When dealing with a body of water as big as the Pacific Ocean, is it possible to actually raise the level of the Ocean more than a few inches...