Growing Risk of Nocturnal Tornadoes Across NJ, NY, PA Overnight

A robust frontal system is expected to bring a short but intense period of severe thunderstorms and isolated nighttime tornadoes to portions of Pennsylvania, New Jersey, and southeastern New York, with the greatest risk concentrated in northern New Jersey and eastern Pennsylvania. The threat is particularly dangerous due to the nocturnal timing, as nocturnal tornadoes are more likely to be fatal because people are asleep and unable to visually spot the tornadoes, emphasizing the need for effective alert systems. This weather event is driven by a deep upper level trough and a warm front lifting northward, followed by a cold front crossing overnight, which will produce lines of showers and thunderstorms with possible tornadic cells. The National Weather Service warns of gusty winds, isolated thunderstorms, and potential urban flooding in the tri-state area during this fast-moving storm. Residents are urged to stay informed and prepared, as the presence of warm and moist air combined with the cold front increases the likelihood of severe weather. The combination of atmospheric conditions highlights the elevated risk of nocturnal tornadoes, especially around Philadelphia and areas south and west of New York City.