In 1978, the Citicorp Center building (now called Citigroup Center) in Manhattan was found to have a fatal flaw against winds hitting its building corners.

During repairs, the Category 4 Hurricane Ella was fast approaching from September 1, 1978. Engineers developed a 10-block hurricane evacuation plan in case the bands of the hurricane got too close. They were worried that the 915 ft building would topple over, knocking over several city blocks of buildings. Fortunately the Hurricane made an abrupt right turn and went away.

Fast-forward to September 11, 2001 and there was a Category 3 Hurricane Erin also just off the coast of New York City. There was no public evacuation plan for Manhattan, and interestingly the 900 ft core columns "Spire" of the North Tower didn't topple over as engineers thought would happen for the Citicorp building. Instead the Spire literally turned to dust in mid-air. Somehow Hurricane Erin also made an abrupt right turn into the ocean shortly after the events of 9/11.. Grok AI table