Magnitude 8.3 HOKKAIDO, JAPAN REGION
2003 September 25 19:50:06 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
Thursday, September 25, 2003 at 19:50:06 (UTC) - Coordinated Universal Time
Friday, September 26, 2003 at 04:50:06 AM local time at epicenter
Time of Earthquake in other Time Zones
|Region||HOKKAIDO, JAPAN REGION|
140 km (85 miles) SSW of Kushiro, Hokkaido, Japan
245 km (150 miles) NE of Hachinohe, Honshu, Japan
250 km (155 miles) SSE of Asahikawa, Hokkaido, Japan
765 km (475 miles) NNE of TOKYO, Japan
|Location Quality||Error estimate: horizontal +/- 4.8 km; depth fixed by location program|
|Nst=305, Nph=305, Dmin=581.2 km, Rmss=0.94 sec, Erho=4.8 km, Erzz=0 km, Gp=34.2 degrees|
|Source||USGS NEIC (WDCS-D)|
|Remarks||At least 589 people injured, extensive damage, landslides and power outages occurred and many roads damaged in southeastern Hokkaido. A tsunami generated with an estimated wave height of 4.0 meters along the southeastern coast of Hokkaido. Felt strongly in much of Hokkaido. Also felt in northern and much of central Honshu as far south as Tokyo. Recorded (6L JMA) in southern Hokkaido, (5L JMA) in central Hokkaido and (4 JMA) in parts of northern and southwestern Hokkaido. Also recorded (4 JMA) in northern Honshu and (2 JMA) as far south as Shizuoka Prefecture, Honshu. Recorded (1 JMA) on Hachijo-jima, Miyaki-jima and Sadoga-shima.|
Magnitude 8 and greater earthquakes are capable of devastating large areas. The shallow September 25 Hokkaido earthquake occurred about 60 km offshore. If the earthquake had occurred directly beneath a populated region, damage would have been more severe.
Previous Deadly Earthquakes in this Region
The last great earthquake (magnitude 8 or greater) in the world was a magnitude 8.4 that occurred on June 23, 2001, near the coast of Peru. This earthquake killed at least 75, including 26 killed by the associated tsunami.
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Scientific & Technical
The region name is an automatically generated name
from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme.
The boundaries of
these regions are defined at one-degree intervals and therefore differ from
irregular political boundaries.
NB: The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->