When heat indexes are high because of much moisture in the air, the actual temperatures are lower than would be otherwise when the skies would be clear (low humidity), and the hot humid air (off the ocean) undercut by cool air from the north results in rain showers which of course cool the atmosphere, such as the showers popping up all over the southern and central U. S. this summer, very normal, so that is not “global warming,” it’s merely the hydrologic cycle in action, more heat for more clouds which in turn cool back down the atmosphere. Now imagine the ocean warm even in winter, as it was during the Ice Age, think of the prodigious snowfall which would come if the north Atlantic were 80 degrees F. in winter, as it was during the Ice Age, in the aftermath of Noah’s Flood.