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At about 10 :17p.m. on 12 July 1993, an earthquake with magnitude 7.8
on the Richter scale occured South-west off shore of Hokkaido. The Meteorological
Agency immediately announced a tsunami (tidal wave) warning and advised precaution.
A large scale tsunami hit the coast of Okushiri island shortly after the earthquake
and the island suffered heavy damage, including a death toll of 231.
The Japan Maritime Safety Agency provided search and rescue services, as
well as emergency transportation of relief goods and people in the district.
The Meteorological Agency, as well as the Japan Maritime Safety Agency,
upgraded the earthquake observation systems. Ports, harbors, airports, and railway
facilities were also damaged, but, a great effort was exerted to quickly restore
normal services.
Abnormal heavy rain in Kyushu and Chugoku district from 31 July to 7 August
1993 brought about a great deal of damage. The Meteorological Agency issued
a timely warning requesting strict precautions while the Japan Maritime Safety
Agency carried out search and rescue activities for the people isolated on the
coast. Railway facilities also suffered great damage, such as the Nippo line
train service that was blocked by a landslide for a long time.
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