The mesoscale typhoon low pressure and its specific dynamical and thermodynamical structures were directly related to this heavy rainfall event.

而中尺度低压及其特有的动力热力结构与该暴雨过程直接相关。

The low pressure area is shallow and large, and the center is still not well defined, so again the forecast of this typhoon may be difficult.

低压区仍浅和大的，并且中心仍然被不很好地确定，如此预报这场台风可能是难的。

The main affecting systems include landfall typhoon, low-level jet stream and west trough.

主要影响系统为登陆台风、西风低槽和低空急流。