Weather trivia: The lowest ever recordedsea-level atmospheric pressure was 25.69 inches of Hg inside of typhoon Tip, on Octo- ber 12, 1979. If you had been unlucky enough to be inside of it, at sea level, on that date, what would have been the boiling point of wa- ter? The enthalpy of vaporization of water is 40.7 kJ/mol.