Formation process of extraordinarily serious snowstorm and its induced damage in 2007 in Liaoning Province
2007年辽宁省特大暴风雪形成过程与危害

On March 4th 2007, an extraordinarily serious snowstorm occurred in Liaoning Province. Based on an overall investigation of the snowstorm, a systematic analysis was made on the intensity, spatiotemporal distribution, formation process, and induced damage of this system. The results showed that this snowstorm covered most parts of Liaoning Province, synoptic with the characteristics of heavy snow, low temperature and strong wind. The mean thickness of snow cov- er was more than 20 cm, maximum precipitation was up to 106 mm, and maximum wind velocity reached 32 m.s^-1. The formation of the snowstorm was due to the upper trough at 500 hPa, high level jet stream and shear transformation at 850 hPa, and ground cyclone. This snowstorm caused great losses in agriculture and industry. Some suggestions and measures for mitigating and responding the similar snowstorms were put forward.