Abstract
Tornado attacked around Tsukuba City on 6th May, 2012, and brought heavy damages in that area. GSI took aerial photographs in order to grisp situation of tornado damages around Tsukuba District and other damaged area, and released those photos through the internet. Authors will report Tornado disaster from several aspects, such as, damaged situation interpreted from aerial photos, characteristics of the damages that were revealed by overlaying other geo-spatial information and figure of the tornado at various times grasped by analyzing video images that were collected through the internet.