Magnitude 8.0 - HOKKAIDO, JAPAN REGION
2003 September 25 19:50:07 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
A great earthquake occurred at 19:50:07 (UTC) on Thursday, September 25, 2003.
The magnitude 8.0 event has been located in the HOKKAIDO, JAPAN REGION. (This event
has been reviewed by a seismologist.)
Magnitude 8.0
Date-Time Thursday, September 25, 2003 at 19:50:07 (UTC)
= Coordinated Universal Time
Friday, September 26, 2003 at 4:50:07 AM
= local time at epicenter
Time of Earthquake in other Time Zones
Location 41.848°N, 143.770°E
Depth 33 km (21 miles) set by location program
Region HOKKAIDO, JAPAN REGION
Distances
135 km (85 miles) SSW of Kushiro, Hokkaido, Japan
240 km (150 miles) SSE of Asahikawa, Hokkaido, Japan
240 km (150 miles) SE of Sapporo, Hokkaido, Japan
770 km (480 miles) NNE of TOKYO, Japan
Location Uncertainty horizontal +/- 7 km (4.3 miles); depth fixed by location program
Parameters Nst=185, Nph=185, Dmin=573.4 km, Rmss=1.01 sec, Gp= 32°,
M-type=moment magnitude (Mw), Version=9
Source USGS NEIC (WDCS-D)