刚才还是晴空万里、骄阳似火,忽然乌云密布,狂风大作,电闪雷鸣,行人难以站立,碗口粗的树被拦腰截断,暴雨如注,像要把整个大地淹没似的……这并不是高科技的科幻片,而是2009年进入汛期以来,强对流天气“现身”我国部分地区后的真实场景。强对流天气是气象学上所指的发生突然、移动迅速、天气剧烈、破坏力极大的灾害性天气,主要包括短时强降水、雷雨大风、龙卷风、冰雹和飑线等,具有迅即致灾的“功能”。强对流天 I was still in a clear sky for a long time. There was a scorching sun. There was a sudden dark cloud, a gust of wind, a thunderstorm and a thunderstorm that pedestrians could not stand. The thick-walled tree was cut off by heavy rain. High-tech science-fiction film, but since entering the flood season in 2009, the strong convective weather “appeared” in some areas of China after the real scene. Severe convective weather is a meteorological means sudden, rapid movement, the weather was fierce, destructive great disastrous weather, including short-term heavy rainfall, thunderstorms, tornadoes, hail and stern lines, with immediate disaster “Features ”. Strong convective days