Monday, 16 September 2013
Breckenridge Ballroom (Peak 14-17, 1st Floor) / Event Tent (Outside) (Beaver Run Resort and Conference Center)
Handout (7.5 MB)
A tornado occurred at Fukuoka City in 21 August 2011. This tornado showed multiple-vortex structure with three suction vortices though its Fujita scale is only F1. In the present study, we analyzed the characteristics of the tornado and the mesocyclone using the data of two Doppler radars in order to clarify the relation between them. The Doppler radar at the Fukuoka airport detected the tornado vortex, but it could not capture suction vortices. On the other hand, the JMA radar at Fukuoka detected a mesocyclone and two misocyclones. The mesocyclone moved eastward faster than the tornado. The tornado vortex connected to the misocyclone located at the rear side of the mesocyclone. Another misocyclone observed at the forward side of the mesocyclone did not yield tornado.
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