Shake Map (IMAGE) Columbia Climate School Caption Recorded Philadelphia-New York-southwestern Connecticut area earthquakes, 1683-2008. Only three are thought to have equaled or exceeded the April 5 quake, in 1737, 1783 and 1884. Credit From Sykes et al., Bull. Seism. Soc. of America, 2008 Usage Restrictions Credit must be given. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.