According to the official determination of the China Seismic Network, an earthquake of magnitude 3.1 occurred at 13:41 on February 22 in Weining County, Bijie City, Guizhou Province, with a focal depth of 10 km, the epicenter at 26.83 degrees north latitude and 104.19 degrees east longitude.
Epicenter topography: the average elevation within 5 km of epicenter is about 2208 M!
震中地形：震中5公里范围内平均海拔约2208米
历史地震：根据中国地震台网速报目录，震中周边200公里内近5年来发生3级以上地震共134次，最大地震是2014年8月3日在云南省昭通市鲁甸县发生的6.5级地震（距离本次震中90公里），按震级大小前50次历史地震分布如图。
Historical earthquakes: According to the catalogue of quick report of China Seismological Network, 134 earthquakes with magnitude 3 or above have occurred in the past five years in the vicinity of the epicenter. The largest earthquake occurred on August 3, 2014 in Ludian County, Zhaotong City, Yunnan Province (90 kilometers from the epicenter). The distribution of the first 50 historical earthquakes with magnitude is shown in the figure.
