Unusually warm sea surface temperates of the west-north-western Atlantic are causing the intensity of Hurricane Florence now approaching the U. S. east coast, whereas usually hurricanes go to Florida or past it into the U. S. Gulf because they were spawned by warm sea surface temperatures off equatorial Africa where the mid-oceanic rift zone in the Atlantic runs near Africa, producing variable heat which rises to increase the sea surface temperatures there. So what caused the heating of the west-north-western Atlantic this summer and fall, was it increased volcanism from the rift zone to the east or regional and merely anomalous global warming, not to be the rule in the future?
