Magnitude 6.7 - TAIWAN REGION
2004 October 15 04:08:50 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

A strong earthquake occurred at 04:08:50 (UTC) on Friday, October 15, 2004. The magnitude 6.7 event has been located in the TAIWAN REGION. (This event has been reviewed by a seismologist.)

Magnitude 6.7 Date-Time Friday, October 15, 2004 at 04:08:50 (UTC) = Coordinated Universal Time Friday, October 15, 2004 at 12:08:50 PM = local time at epicenter Time of Earthquake in other Time Zones Location 24.533°N, 122.696°E Depth 94.4 km (58.7 miles) set by location program Region TAIWAN REGION Distances 85 km (55 miles) E of Su-ao, Taiwan 130 km (80 miles) ENE of Hua-lien, Taiwan 130 km (80 miles) ESE of T'AI-PEI, Taiwan 155 km (95 miles) W of Ishigaki-jima, Ryukyu Islands, Japan Location Uncertainty horizontal +/- 4.2 km (2.6 miles); depth fixed by location program Parameters Nst=292, Nph=292, Dmin=131.2 km, Rmss=0.81 sec, Gp= 47°, M-type=teleseismic moment magnitude (Mw), Version=S Source USGS NEIC (WDCS-D) Event ID uspqan Felt Reports Several people injured and buildings damaged in T'ao-yuan County. Felt throughout Taiwan. Also felt in much of the Ryukyu Islands, Japan. Recorded (5 TAP) in Hua-lien and I-lan; (4 TAP) in T'ai-chung, T'ai-pei, T'ai-tung, T'ao-yuan and Yun-lin; (3 TAP) in Chang-hua, Chia-i, Hsin-chu, Miao-li, Nan- t'ou and T'ai-nan; (2 TAP) in Kao-hsiung and P'ing-tung Counties. Also recorded (5L JMA) on Yonaguni- jima; (4 JMA) on Iriomote-jima and Ishigaki-jima; (3 JMA) on Miyako-jima; (2 JMA) on Tarama-shima; (1 JMA) on Amami-oshima and Kume-jima, Ryukyu Islands.

Location Maps: NEIC Maps Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others. NEIC Moment Tensor Solution Historical Moment Tensor Solutions Seismic Hazard Map Historical Seismicity Theoretical P-Wave Travel Times Energy and Broadband Solution Phase Data Seismic Record Section News Release Earthquake Information for TAIWAN Archive of newsworthy events

News Links Powerful quake rocks Taiwan & south Japan, no serious damage reported

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The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude, they are not considered the official magnitude.

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