异常天气 meaning in Chinese

anomalous weather
unusual weather

When the precipitation appears extreme abnormality during 1st . - 7th . may in the year of 1977 , 1985 , and dur
同时1985年五一期间和1983年十一期间极端异常天气分别与大气准10天和准双周振荡密切相关。
After the disaster caused by continual heavy rainstorm during the huaihe ' s meiyu period since 1991 , the abnormal rainstorm weathers during the meiyu period occur again in june and july , 2003
淮河流域梅雨期继1991年出现持续性大暴雨造成严重洪涝灾害后， 2003年6月7月又出现了持续性梅雨暴雨异常天气过程。