In their 1997 book The Fourth Turning: An American Prophecy, historians William Strauss and Neil Howe predicted that between 2005 and 2026 the United States would experience a “Fourth Turning” crisis—a period of social upheaval on the scale of the Revolution, Civil War, or Great Depression.
Multiple commentators link recent U.S. crises (2008 recession, 2020 pandemic, political polarization) to this forecast, though no conclusive “cataclysm” has occurred. The cycle is set to resolve by ~2026.