Meteorological;
Bureau;
of;
Shaanxi;
Province,;
Yulin;
719000,;
China;
Meteorological;
Bureau;
of;
Shaanxi;
Province,;
Fugu;
719400,;
China;
Meteorological;
Bureau;
of;
Shaanxi;
Province,;
Suide;
718000,;
China;
大暴雨; 榆林市; 中尺度分析; 陕北; 中尺度系统; 中尺度低压; 常规气象资料; 低空急流;