Forecasters have issued a warning for severe weather conditions in New Jersey, with an isolated tornado and potential instances of flash flooding predicted. The best timing for the strongest weather is 4 p.m. to 10 p., with a potential tornado, or possible flash flooding. The forecast predicts a 90 percent chance of precipitation, with new precipitation amounts between a quarter and half of an inch possible. However, conditions are expected to change Sunday night, with a chance of showers and thunderstorms before 8 p., followed by showers and possibly a thunderstorm between 8p.m., and 11p. m. The weather is expected to improve on Monday, although there is a potential shower and thunderstorm forecast.