Very strong mag. 6.4 earthquake - 91 km northeast of Hachinohe, Aomori, Japan, on Monday, August 13, 2001 at 20:11 GMT
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Very strong magnitude 6.4 earthquake at 38 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
| Date & time | Aug 13, 2001 20:11:23 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.4 |
| Depth | 38.0 km |
| Epicenter latitude / longitude | 41.046°N / 142.308°E  (North Pacific Ocean, Japan) |
| Antipode | 41.046°S / 37.692°W |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Mutsu-Hiuchi-dake (113 km / 70 mi) |
| Nearby towns and cities | 87 km (54 mi) ENE of Misawa (pop: 42,800) | Show on map | Quakes nearby 91 km (57 mi) NE of Hachinohe (pop: 239,000) | Show on map | Quakes nearby 95 km (59 mi) ESE of Mutsu (pop: 49,200) | Show on map | Quakes nearby 135 km (84 mi) ENE of Aomori (pop: 298,400) | Show on map | Quakes nearby 154 km (96 mi) ESE of Hakodate (pop: 275,700) | Show on map | Quakes nearby 163 km (101 mi) ENE of Hirosaki (pop: 175,000) | Show on map | Quakes nearby 179 km (111 mi) SE of Muroran (pop: 96,200) | Show on map | Quakes nearby 179 km (111 mi) NNE of Morioka (pop: 295,200) | Show on map | Quakes nearby 238 km (148 mi) SSE of Sapporo (pop: 1,883,000) | Show on map | Quakes nearby 638 km (396 mi) NNE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby |
| Estimated seismic energy released | 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy |
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. | Depth | Location | Source |
| 6.4 | 38 km | Hokkaido, Japan region | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Aftershocks
[More info]
Recorded aftershocks, latest first (5 quakes)
Date and time | Mag Depth | Location | Details |
| Jan 23, 2002 03:09 21 years ago | 4.3 51 km | 90 km E of Mutsu, Aomori, Japan | More |
| Nov 12, 2001 11:30 21 years ago | 4.8 67 km | 74 km E of Mutsu, Aomori, Japan | More |
| Sep 17, 2001 11:39 21 years ago | 4.2 61 km | 98 km NE of Hachinohe, Aomori, Japan | More |
| Aug 24, 2001 09:48 21 years ago | 5.2 59 km | 90 km NE of Hachinohe, Aomori, Japan | More |
| Aug 14, 2001 03:44 21 years ago | 4.6 56 km | 98 km NE of Hachinohe, Aomori, Japan | More |
Earlier earthquakes in the same area
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