Abstract
An analysis of small-scale disturbance followed by severe storms was performed by making use of the automatic recording data of weather stations in western Japan and South Korea.
A high pressure cell with 500km length and 50km width could be pursued for about 12 hours from South Korea to the central Japan. Mesomaps were constructed in order to study the mechanism of the maintenance of the squall line and to estimate the order of magnitude of each term in the equation of motion governing the phenomena.