Characteristics of heavy rainfall disasters in Hiroshima City on June 29, 1999
J.JSNDS 18-2 165-175(1999)
Characteristics of heavy rainfall disasters in Hiroshima City on June 29, 1999
Motoyuki Ushiyama*, Yoshifumi Satofuka*, and Masahiro Kaibori**
Abstract
The heavy rainfall disasters occurred mainly in Hiroshima Prefecture on June 29th, 1999. The death tool in the whole country was 41. This damage is the biggest after the typhoon disasters in September 1993. The maximum daily precipitation around Hiroshima City was about 260 mm and the maximum hourly precipitation was about 70 mm. These records became one of the maximum records around Hiroshima City. The heavy rainfall area was local; for example the area with more than 200 mm daily precipitation was about 10 km east and west, 30 km north and south. Most of the dead persons were killed by the sediment disasters. There are 5,960 hazardous place for steep slope failure and 4,930 dangerous streams of debris flows in Hiroshima Prefecture and as for this the whole country is the most. Based on this event, it is necessary to construct warning and evacuation system, to examine a way of using land and so on in the future.
Total precipitation on Jun.29,1999
Yashiro, Saeki-Ku, Hiroshima City
Kamikobukagawa, Saeki-Ku, Hiroshima City
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