一九七五年一月十二日凌晨五时二十二分,云南省楚雄地区发生5.5级地震。有感范围达二十四个县市。一月初部分测报点做了不同程度的预报,一月四日州、县地办组织会商,提出一月中旬楚雄附近将发生4.5级左右地震的预报意见。其中土地电的前兆异常情况如下。 An earthquake of magnitude 5.5 occurred in the Chuxiong area of ​​Yunnan Province at 5.22am on January 12, 1975. A sense of area up to 24 counties and cities. At the beginning of January, some of the survey sites made different forecasts. On January 4, the prefectural and county agencies organized consultations and proposed the forecast of an earthquake of magnitude 4.5 around Chuxiong in mid-January. Among them, the antecedents of earth electricity anomalies are as follows.