Analysis of information sources in references of the Wikipedia article "Túc Bắc" in Vietnamese language version.
当日早8时，肃北县城天昏地暗，尘土弥漫，能见度较低，上班的人们纷纷戴着口罩、裹着头巾出门，过往车辆全都亮起警示灯缓慢行进。当日，沙尘天气侵袭国道215线，交通受到影响。据当地气象部门预报，肃北6月24日风速达到18.4米每秒，最小能见度585米，持续了大概2小时。沙尘暴约当日6时结束，后转为浮尘天气，能见度也缓慢上升。据了解，6月份出现沙尘暴在肃北较为罕见。[liên kết hỏng]
5月21日晚，肃北、敦煌风沙弥漫，气象部门随即发布沙尘暴黄色预警信息。沙尘暴抵达肃北县的时间是当日19时06分，风速8-9米/秒，最大能见度800米。[liên kết hỏng]
Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)
Photo taken on Aug. 20, 2018 shows the scenery of a glacier in Subei Mongolian Autonomous County, northwest China's Gansu Province. (Xinhua/Fan Peishen)
