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Major magnitude 7.1 earthquake - 323 km southwest of Tokyo, Japan, on Sunday, August 9, 2009 at 10:55 GMT

Major magnitude 7.1 earthquake - 323 km southwest of Tokyo, Japan, on Sunday, August 9, 2009 at 10:55 GMT

Major magnitude 7.1 earthquake at 292 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Aug 9, 2009 10:55:55 UTC
Magnitude: 7.1
Depth: 292.0 km
Epicenter latitude / longitude: 33.167°N / 137.944°E (Philippine Sea, Japan)
Antipode: 33.167°S / 42.056°W
Nearest volcano: Inamba-jima (137 km / 85 mi)
Nearby towns and cities:
162 km (101 mi) S of Ōyama (Omaezaki) (pop: 21,700) --> See nearby quakes!
171 km (106 mi) S of Iwata (pop: 88,500) --> See nearby quakes!
172 km (107 mi) S of Hamamatsu (pop: 605,100) --> See nearby quakes!
178 km (111 mi) S of Kakegawa (pop: 84,000) --> See nearby quakes!
185 km (115 mi) SSE of Toyohashi-shi (pop: 378,400) --> See nearby quakes!
186 km (116 mi) SE of Ise (pop: 97,300) --> See nearby quakes!
190 km (118 mi) SSE of Toyokawa (pop: 120,500) --> See nearby quakes!
191 km (119 mi) S of Fujieda (pop: 132,900) --> See nearby quakes!
192 km (120 mi) S of Yaizu (pop: 121,100) --> See nearby quakes!
323 km (201 mi) SSW of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1015 joules (783 gigawatt hours, equivalent to 6.7 x 105 tons of TNT or 42.1 atomic bombs!) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.1292 kmnear the south coast of Honshu, JapanUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.
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Aftershocks

[More info]

Recorded aftershocks, latest first (34 quakes)

Date and timeMag
Depth
LocationDetails
Aug 7, 2011 06:30
11 years ago
4.9

406 km
491 km S of Tokyo, JapanMore
Aug 1, 2011 14:58
11 years ago
5.9

13 km
28 km S of Yaizu, Prefectura de Shizuoka, JapanMore
Jul 24, 2011 14:32
11 years ago
4.7

43 km
Sasano-shima, 21 km NE of Shingu, Wakayama, JapanMore
Mar 12, 2011 13:11
11 years ago
4.8

10 km
88 km SE of Futago-shima Island, JapanMore
Feb 19, 2011 15:32
11 years ago
4.6

125 km
Miyake-shichō, Tokyo, 59 km SE of Shikine-jima Island, JapanMore
Jan 22, 2011 02:48
11 years ago
4.3

284 km
33 km S of Iwata, Prefectura de Shizuoka, JapanMore
Jan 12, 2011 09:04
11 years ago
4.3

455 km
487 km SW of Tokyo, JapanMore
Dec 28, 2010 07:15
11 years ago
4.5

163 km
63 km NW of Hachijojima Island, Hachijō Shichō, Tokyo, JapanMore
Dec 15, 2010 18:40
11 years ago
4.4

347 km
330 km SW of Tokyo, JapanMore
Nov 23, 2010 21:40
11 years ago
4.5

353 km
324 km SW of Tokyo, JapanMore
Nov 9, 2010 16:18
12 years ago
4.3

435 km
78 km SE of Futago-shima Island, JapanMore
Oct 21, 2010 04:23
12 years ago
4.4

369 km
401 km SW of Tokyo, JapanMore
Sep 18, 2010 01:49
12 years ago
4.1

36 km
79 km NE of Inamba-jima Island, JapanMore
Aug 18, 2010 23:33
12 years ago
5.3

365 km
441 km S of Tokyo, JapanMore
Jul 31, 2010 03:52
12 years ago
4.7

238 km
388 km S of Tokyo, JapanMore
Jul 19, 2010 16:46
12 years ago
4.1

35 km
67 km W of Hachijojima Island, Hachijō Shichō, Tokyo, JapanMore
Jul 4, 2010 01:07
12 years ago
4.3

331 km
72 km SE of Ise, Mie, JapanMore
Jun 5, 2010 16:36
12 years ago
4.6

311 km
330 km SW of Tokyo, JapanMore
May 25, 2010 22:38
12 years ago
4.5

422 km
418 km SW of Tokyo, JapanMore
May 22, 2010 07:18
12 years ago
4.0

401 km
363 km SE of Tanabe, Wakayama, JapanMore
Apr 26, 2010 23:23
12 years ago
5.1

356 km
336 km SW of Tokyo, JapanMore
Mar 16, 2010 06:41
12 years ago
4.4

283 km
333 km SW of Tokyo, JapanMore
Mar 4, 2010 21:49
12 years ago
4.2

18 km
61 km SE of Shikine-jima Island, JapanMore
Feb 6, 2010 00:50
12 years ago
4.4

422 km
468 km SW of Tokyo, JapanMore
Jan 12, 2010 19:51
12 years ago
4.2

352 km
59 km S of Ise, Mie, JapanMore
Jan 12, 2010 19:51
12 years ago
4.2

352 km
59 km S of Ise, Mie, JapanMore
Dec 9, 2009 16:06
12 years ago
4.9

310 km
343 km SW of Tokyo, JapanMore
Oct 5, 2009 14:12
13 years ago
4.6

354 km
323 km SW of Tokyo, JapanMore
Aug 24, 2009 02:10
13 years ago
4.3

284 km
308 km SW of Tokyo, JapanMore
Aug 13, 2009 09:11
13 years ago
4.3

10 km
17 km SE of Yaizu, Prefectura de Shizuoka, JapanMore
Aug 11, 2009 09:09
13 years ago
4.3

39 km
27 km SE of Yaizu, Prefectura de Shizuoka, JapanMore
Aug 10, 2009 21:27
13 years ago
4.3

27 km
20 km SE of Yaizu, Prefectura de Shizuoka, JapanMore
Aug 10, 2009 20:07
13 years ago
6.2

40 km
11 km SE of Shimada, Prefectura de Shizuoka, JapanMore
Aug 9, 2009 16:01
13 years ago
4.8

306 km
333 km SW of Tokyo, JapanMore

Earlier earthquakes in the same area

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