Some Active Features of Tornado in Fujian Province

25 tornado events in Fujian Proviuce about a thousand years were analysed. The results show that, (1 ) tornado occured in both spring and summer,and its frequency is similar. 11 cases of 12 tornados since 1949 were at 13 to 18 o'clock (92% ),and the other was at 9 a. m. (8%);(2) tornado was of ten near the location of low pressure, high temperature and humidity, It was most accompanied by the cumulonimbus and strong wind above surface; (3) the systems induced 12 tornados were of typhoon (6 times,during July to September),cold front (4 times, May and June ),squall line (2 times, in April) and thundery cell (2 times);and (4) according to their intensity and damage,tornados accompaning typhoon and squall line were stronger than others.

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