• The definition has been statutorily broadened to include all natural phenomena that are exceptional, inevitable, and irresistible, the effects of which could not be prevented or avoided by the exercise of due care or foresight. 42 USCA § 9601(1).
— Also termed act of nature; act of providence; superior force; vis major; irresistible superhuman force; vis divina. Cf. FORCE MAJEURE; unavoidable accident under ACCIDENT. [Cases: Contracts 303(3), 309(1). C.J.S. Contracts §§ 520–524.]