《宋书·志·卷三十四》
元嘉三十年正月，刮大风，树木被连根拔起，下冻雨，冻死牛马，又打雷闪电，天地昏暗。
元嘉三十年正月，大风拔木，雨冻杀牛马，雷电晦冥。
In the first month of the 30th year of the Yuanjia reign, a gale-force wind uprooted trees, freezing rain fell, and animals froze to death. There was also thunder and lightning, and the sky and earth grew dark.