Diagnosis Analysis on a Thunderstorm Event in the East of Northwest China
西北区东部一次雷暴天气过程的诊断分析

The diagnosis analysis for a case thunderstorm occurredon 14 August 2006 was studied utilizing the observed data in this paper.The main results were as follows:(1) The thunderstormevent has closely relationship with the trough at 500 hPa and the withdrawingof the western Pacific subtropical high.At the same time,the saddle pattern of wind field at low level of troposphere favored the occurrence and development of thunderstorm.(2) The existence and persistenceof dry and warm lids were in favor of accumulatio...