UPDATE: The quake magnitude has been downgraded to 6.3Mw by Taiwan’s Central Weather Bureau
Strong, Shallow Quake Strikes 45km SSW of Hualian, Taiwan
Members Note: Multiple plates going through a laborious algorithm to produce the desired outcome!
REVISED EQ Details
- Magnitude: 6.3Mw
- Event Time: 2013-10-31 @ 12:02UTC
- Location: 23.55°N, 121.42°E
- Depth: 19.5km
- Source: Central Weather Bureau, Taiwan
Nearby Cities
- 53km SSW of Hualien County, Taiwan
- 760km (472mi) ENE of Hong Kong
NO local reports of damage or casualties available as of posting.

Source: Central Weather Bureau, Taiwan
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Earthquake Location Map. Source: USGS/EHP
More detail to follow …
Seismic activity along the boundaries of the Philippine Sea Plate (Allen et al., 2009) has produced 7 great (M>8.0) earthquakes and 250 large (M>7) events. Among the most destructive events were the 1923 Kanto, the 1948 Fukui and the 1995 Kobe (Japan) earthquakes (99,000, 5,100, and 6,400 casualties, respectively), the 1935 and the 1999 Chi-Chi (Taiwan) earthquakes (3,300 and 2,500 casualties, respectively), and the 1976 M7.6 Moro Gulf and 1990 M7.6 Luzon (Philippines) earthquakes (7,100 and 2,400 casualties, respectively). There have also been a number of tsunami-generating events in the region, including the Moro Gulf earthquake, whose tsunami resulted in more than 5,000 deaths. –USGS/EHP
Typhoon KROSA Image Update
The quake struck Taiwan as the outer bands of Typhoon KROSA battered the coastal areas south and southeast of the island.

Typhoon KROSA Visible/IR satellite image (FIRE-EARTH Enhancement) recorded at 12:30UTC on October 31, 2013. Source: CIMSS/SSEC/WISC.