On the Mechanism of Heavy Rainfall at Miyazaki (I)

Abstract

At Miyazaki Prefecture, southeastern region of Kyuayu, heavy rainfalls are often experienced locally and cause vast damages. The mechanism of such a heavy rainfall is not yet made clear.
In this paper, a brief investigation has been made on the cause of heavy rainfall in front of a violent typhoon passing Hyuganaaa, eastern sea off this district, and obtained the following results:
(1) A cold air mass detached from the parent high pressure and traveled down to south over Kyusyu.
(2) A heavy rainfall occurred in margin of this detached cold air mass and the total amount of precipitation by the passage of typhoon may be divided in two, the first by this cold air mass and the second by the passage of typhoon center.