河北省气象台继续发布大风蓝色预警信号，请注意防范！

Group 1 - The article discusses the issuance of a blue wind warning by the Hebei Meteorological Observatory due to the influence of cold air [3] - The warning indicates that from the night of January 11 to the daytime of January 12, areas including Zhangjiakou, Chengde, northern Qinhuangdao, and parts of Baoding, Shijiazhuang, Xingtai, and Handan will experience northwesterly winds of 4 to 6 levels, with gusts reaching 7 to 8 levels, and locally exceeding 9 levels [3] - Additionally, the Bohai Sea and coastal areas are expected to have southwesterly winds of 5 to 6 levels, with gusts of 7 to 8 levels during the same period [3]