The spectrum characteristics of geoelectric diurnal variation and geoelectric storm have been identified by maximum entropy method, based on geoelectric data from seven stations in the Chinese mainland, including Jiayuguan, Changli and Chongming.

In this paper, after briefly reviewing the international research and development of late decade, the investigations and analyses on the relationship between geomagnetic storms and China power systemS are presented for the first time.

As a main contributor to space weather, geomagnetic storms can severely affect space-borne and ground-based technological systems, especially satellite communications, navigation systems, electric power systems, and oil pipeline and so on.

The geomagnetic storm caused by the activities of solar can induce geomagnetically induced current in power grids.

Through analyzing the weather situation,a local torrential rain event is analyzed in detail based on the intensity and velocity data from Doppler weather radar as well as vertical wind profilers and two dimensional wind fields derived from velocity data.

The forecasting of local torrential rainfall caused by micro-and meso-scale weather systems is a difficult task in short-range weather forecasting or nowcasting service,so it is necessary to make further study to provide the detail weather services for 2008 Beijing Olympic Games.