Major mag. 7.0 earthquake - Southeast of the Ryukyu Islands, Japan on Tuesday, 18 July 1961
Magnitude: 7.0
Depth: 30.6 km
Epicenter latitude / longitude: 29.692°N / 131.683°E
(Japan)Nearest volcano: Tokara Hirase (161 km / 100 mi)
Nearby towns and cities:
126 km (78 mi) SE of Koshima (pop: 1,200)
126 km (78 mi) SE of Koseda (pop: 2,300)
131 km (81 mi) SE of Yudomari (pop: 2,000)
133 km (83 mi) SE of Nishinoomote (pop: 17,800)
198 km (123 mi) SE of Ibusuki (pop: 29,700)
1003 km (623 mi) SW of Tokyo (pop: 8,336,600)
Primary data source: USGS
Estimated released energy: 2 x 1015 joules (554 gigawatt hours, equivalent to 4.8 x 105 tons of TNT or 29.8 atomic bombs!) [learn more]
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.
| Time | Mag. / Depth | Location | Source |
| Tue, 18 Jul 14:03 UTC | M 7.0 / 30.6 km | Southeast of the Ryukyu Islands, Japan | 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 yet. If you felt it be the first to report it!
Aftershocks of the 7.0 quake: Southeast of the Ryukyu Islands, Japan, 18 Jul 1961 14:03
More info
Recorded aftershocks, latest first (5 quakes):- 03 Jan 1963 03:05 UTC| M 6.0 |35 km (21.7 mi) depth|131 km (81 mi) distance| USGS | Strong mag. 6.0 earthquake - Ryukyu Islands, Japan on Thursday, 3 January 1963
- 02 Jun 1962 17:15 UTC| M 6.0 |35 km (21.7 mi) depth|103 km (64 mi) distance| USGS | Strong mag. 6.0 earthquake - Ryukyu Islands, Japan on Saturday, 2 June 1962
- 21 Jul 1961 22:39 UTC| M 5.7 |20 km (12.4 mi) depth|23 km (14 mi) distance| USGS | Details
- 21 Jul 1961 18:50 UTC| M 5.8 |20 km (12.4 mi) depth|20 km (12 mi) distance| USGS | Details
- 19 Jul 1961 11:58 UTC| M 5.8 |20 km (12.4 mi) depth|17 km (11 mi) distance| USGS | Details
Earlier earthquakes in the same area
Major mag. 7.0 earthquake - Southeast of the Ryukyu Islands, Japan on Tuesday, 18 July 1961Click here to search our database for earlier earthquakes in the same area since 1900!
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