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Strong mag. 5.7 earthquake - North Pacific Ocean, 44 km northeast of Miyako, Iwate, Japan, on Wednesday, Oct 6, 2021 at 2:46 am (GMT +9) -

Strong mag. 5.7 earthquake - North Pacific Ocean, 44 km northeast of Miyako, Iwate, Japan, on Wednesday, Oct 6, 2021 at 2:46 am (GMT +9) Strong mag. 5.7 earthquake - North Pacific Ocean, 44 km northeast of Miyako, Iwate, Japan, on Wednesday, Oct 6, 2021 at 2:46 am (GMT +9)

Strong magnitude 5.7 earthquake at 51 km depth

5 Oct 17:53 UTC: First to report: GFZ after 8 minutes.
5 Oct 17:55: Hypocenter depth recalculated from 62.0 to 56.0 km (from 39 to 35 mi). Epicenter location corrected by 13 km (8.2 mi) towards WNW.
5 Oct 18:19: Magnitude recalculated from 5.8 to 5.7. Hypocenter depth recalculated from 56.0 to 57.0 km (from 35 to 35 mi). Epicenter location corrected by 7.2 km (4.5 mi) towards WSW.
5 Oct 18:56: Hypocenter depth recalculated from 57.0 to 51.0 km (from 35 to 32 mi). Epicenter location corrected by 2 km (1.3 mi) towards SW.
Update Tue, 5 Oct 2021, 18:00
Significant earthquake of magnitude 5.8 just reported 52 km northeast of Miyako, Japan
5.8 quake 6 Oct 2:46 am (GMT +9)
5.8 quake 6 Oct 2:46 am (GMT +9)
A moderately shallow magnitude 5.8 earthquake was reported early morning near Miyako, Miyako-shi, Iwate, Japan.
According to the German Research Centre for Geosciences (GFZ), the quake hit on Wednesday, October 6th, 2021, at 2:46 am local time at a moderately shallow depth of 56 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from France's Réseau National de Surveillance Sismique (RéNaSS) which listed the quake at magnitude 6.0. Other agencies reporting the same quake include the European-Mediterranean Seismological Centre (EMSC) at magnitude 6.1, and Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) at magnitude 6.5.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Miyako (pop. 51,700) located 52 km from the epicenter, Yamada (pop. 20,100) 68 km away, Ōtsuchi (pop. 16,500) 80 km away, Kamaishi (pop. 43,100) 90 km away, Hachinohe (pop. 239,000) 92 km away, and Ichinohe (pop. 15,800) 95 km away, the quake should have been felt as light shaking.
Weak shaking might have been felt in Morioka (pop. 295,200) located 108 km from the epicenter, and Kitakami (pop. 93,900) 132 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake data

Earthquake details

Date & timeOct 5, 2021 17:46:02 UTC -
Local time at epicenterWednesday, Oct 6, 2021 at 2:46 am (GMT +9)
StatusConfirmed
Magnitude5.7
Depth51.0 km
Epicenter latitude / longitude39.96°N / 142.26°E (North Pacific Ocean, Japan)
Antipode39.96°S / 37.74°W
Shaking intensityModerate shaking
Felt23 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoOsore-yama (110 km / 68 mi)
Nearby towns and cities44 km (27 mi) NE of Miyako (pop: 51,700) | Show on map | Quakes nearby
61 km (38 mi) NNE of Yamada (Shimohei-gun) (pop: 20,100) | Show on map | Quakes nearby
73 km (45 mi) NNE of Ōtsuchi (Kamihei-gun) (pop: 16,500) | Show on map | Quakes nearby
83 km (52 mi) NNE of Kamaishi (pop: 43,100) | Show on map | Quakes nearby
87 km (54 mi) ESE of Ichinohe (pop: 15,800) | Show on map | Quakes nearby
88 km (55 mi) SE of Hachinohe (pop: 239,000) | Show on map | Quakes nearby
95 km (59 mi) NE of Tōno (pop: 26,800) | Show on map | Quakes nearby
99 km (62 mi) ENE of Morioka (pop: 295,200) | Show on map | Quakes nearby
354 km (220 mi) SSE of Sapporo (pop: 1,883,000) | Show on map | Quakes nearby
526 km (327 mi) NNE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
340 km (211 mi) SE of Okushiri Island (pop: 3,340) | Show on map | Quakes nearby
390 km (242 mi) S of Hokkaido Island (pop: 5,500,000) | Show on map | Quakes nearby
397 km (247 mi) NE of Sado Island (pop: 55,200) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Rain 16.3°C (61 F), humidity: 83%, wind: 12 m/s (23 kts) from NNE
Estimated seismic energy released2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 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
5.751 kmNear East Coast of Honshu, JapanGFZ
6.554 kmJapan: NE OFF IWATE PREFNIED
5.660 kmNEAR EAST COAST OF HONSHU, JAPANEMSC
5.857 kmJapan: Near SendaiRENASS
5.745 km54 Km NNE of Miyako, JapanUSGS
5.759 kmNear East Coast of Honshu, JapanGeoAu
5.622 kmNear East Coast of Honshu, JapanBMKG

User reports for this quake (24)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Sleeping in bed, Misawa air base tower (114.3 km NW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s : We live on 9th floor of tower so we feel it more than on ground level but you could feel the floor swaying back and forth, our long blinds were rattling hitting each other, walls were creaking some. It was definitely scary, very similar but not exact to f | 12 users found this interesting.  
Misawa, Aomori (114.3 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 minutes : I'm in an apartment on rollers. I have never felt such large swaying motions before. | 9 users found this interesting.  
Sagamihara, Kanagawa, Japan (555.9 km SSW of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 2-5 s : It was enough to wake me and my wife out of our sleep. It wasn't strong but you can still tell it made our building sway. | 3 users found this interesting.  
Oirase, Japan (88 km WNW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 minutes : Light shaking, but long | 4 users found this interesting.  
Misawa (112.2 km NW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : It woke me out of my sleep and I wobbled as I walked to my kids’ rooms. I was on the second floor of a townhouse. | 2 users found this interesting.  
Misawa, Aomori (107.9 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 minutes : Woke me up in the middle of the night with moderate shaking. Knocked some items off of shelves. | 3 users found this interesting.  
Misawa (114.7 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 20-30 s : My bed was shacking like crazy and it felt like the earthquake was right underneath my room | 2 users found this interesting.  
Tono City, Iwate / Moderate shaking (MMI V) / horizontal (sideways) swinging / 30-60 s : Shindo 4 felt. | 2 users found this interesting. (reported through our app)  
morioka,iwate japan / Strong shaking (MMI VI) / single vertical bump / 2-5 s : strong shaking | 2 users found this interesting.  
Hachinohe, Japan / Strong shaking (MMI VI) / complex motion difficult to describe / 15-20 s : My wife and I woke up to sudden violent and loud shaking for about 30 seconds. It was pretty intense | One user found this interesting.  
Misawa, japan (114.2 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 15-20 s
Oriase Japan (107.6 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 20-30 s
Uzurakubo (107.9 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 5-10 s
Yokote, Akita (162.8 km WSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 20-30 s
Tokyo Machida (547.5 km SSW of epicenter) [Map] / not felt
Misawa / Light shaking (MMI IV) / both vertical and horizontal swinging / 15-20 s
Morioka,Iwate / Light shaking (MMI IV) / rattling, vibrating / very short
中央区 / Weak shaking (MMI III) / complex motion difficult to describe / 20-30 s (reported through our app)
Misawa Shi / Moderate shaking (MMI V) / 20-30 s
Misawa, Aomori / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Misawa / Strong shaking (MMI VI) / complex motion difficult to describe / 10-15 s
Hachimantai Shi iwate Japan / Strong shaking (MMI VI) / 2-5 s
Aomori / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 minutes
Misawa / Moderate shaking (MMI V) / horizontal (sideways) swinging / 30-60 s (reported through our app)
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Aftershocks

[More info]

Recorded aftershocks, latest first (43 quakes)

Date and timeMag
Depth
LocationDetails
Dec 4, 2021 14:21
30 weeks ago
3.1

62 km
North Pacific Ocean, 46 km N of Miyako, Iwate, JapanMore
Dec 2, 2021 16:07
31 weeks ago - felt
3.0

29 km
North Pacific Ocean, 82 km E of Hachinohe, Aomori, JapanMore
Nov 29, 2021 21:26
31 weeks ago
2.8

47 km
North Pacific Ocean, 14 km E of Miyako, Iwate, JapanMore
Nov 29, 2021 18:51
31 weeks ago
4.1

48 km
North Pacific Ocean, 12 km E of Miyako, Iwate, JapanMore
Nov 26, 2021 09:57
32 weeks ago
2.6

47 km
North Pacific Ocean, 14 km E of Miyako, Iwate, JapanMore
Nov 24, 2021 06:42
32 weeks ago
3.2

33 km
North Pacific Ocean, 78 km SE of Hachinohe, Aomori, JapanMore
Nov 17, 2021 04:46
33 weeks ago
2.5

46 km
North Pacific Ocean, 16 km E of Miyako, Iwate, JapanMore
Nov 16, 2021 12:28
33 weeks ago
2.6

53 km
North Pacific Ocean, 51 km NE of Miyako, Iwate, JapanMore
Nov 16, 2021 09:32
33 weeks ago
2.6

24 km
North Pacific Ocean, 67 km NE of Miyako, Iwate, JapanMore
Nov 15, 2021 06:47
33 weeks ago
3.0

46 km
North Pacific Ocean, 31 km NE of Miyako, Iwate, JapanMore
Nov 14, 2021 23:02
33 weeks ago
3.2

31 km
North Pacific Ocean, 90 km SE of Hachinohe, Aomori, JapanMore
Nov 14, 2021 08:08
33 weeks ago
2.5

55 km
North Pacific Ocean, 25 km N of Miyako, Iwate, JapanMore
Nov 12, 2021 02:06
34 weeks ago
3.6

30 km
North Pacific Ocean, 80 km E of Hachinohe, Aomori, JapanMore
Nov 11, 2021 15:10
34 weeks ago
2.5

27 km
North Pacific Ocean, 75 km NE of Miyako, Iwate, JapanMore
Nov 10, 2021 13:09
34 weeks ago
4.2

30 km
North Pacific Ocean, 69 km NE of Miyako, Iwate, JapanMore
Nov 7, 2021 23:20
34 weeks ago
2.6

59 km
North Pacific Ocean, 40 km N of Miyako, Iwate, JapanMore
Nov 7, 2021 16:42
34 weeks ago
2.7

44 km
North Pacific Ocean, 54 km NE of Miyako, Iwate, JapanMore
Nov 7, 2021 12:44
34 weeks ago
4.6

34 km
North Pacific Ocean, 85 km SE of Hachinohe, Aomori, JapanMore
Oct 31, 2021 16:32
35 weeks ago
3.4

39 km
North Pacific Ocean, 50 km NE of Miyako, Iwate, JapanMore
Oct 31, 2021 10:16
35 weeks ago
2.6

32 km
North Pacific Ocean, 71 km NE of Miyako, Iwate, JapanMore
Oct 31, 2021 00:06
35 weeks ago
2.9

39 km
North Pacific Ocean, 49 km NE of Miyako, Iwate, JapanMore
Oct 30, 2021 21:03
35 weeks ago
3.1

58 km
16 km NW of Miyako, Iwate, JapanMore
Oct 27, 2021 20:53
36 weeks ago
4.0

58 km
15 km NW of Miyako, Iwate, JapanMore
Oct 26, 2021 08:41
36 weeks ago
2.7

26 km
North Pacific Ocean, 19 km E of Miyako, Iwate, JapanMore
Oct 25, 2021 10:14
36 weeks ago
3.0

50 km
North Pacific Ocean, 52 km NE of Miyako, Iwate, JapanMore
Oct 22, 2021 09:23
37 weeks ago
2.5

30 km
North Pacific Ocean, 69 km E of Hachinohe, Aomori, JapanMore
Oct 21, 2021 00:03
37 weeks ago
2.8

47 km
North Pacific Ocean, JapanMore
Oct 20, 2021 10:58
37 weeks ago
3.2

58 km
Iwate, JapanMore
Oct 16, 2021 13:21
37 weeks ago
3.1

51 km
North Pacific Ocean, JapanMore
Oct 15, 2021 10:14
38 weeks ago
2.8

39 km
North Pacific Ocean, JapanMore
Oct 14, 2021 19:45
38 weeks ago
2.9

52 km
North Pacific Ocean, JapanMore
Oct 14, 2021 14:00
38 weeks ago
2.6

50 km
North Pacific Ocean, JapanMore
Oct 12, 2021 11:30
38 weeks ago
4.3

43 km
North Pacific Ocean, JapanMore
Oct 11, 2021 04:50
38 weeks ago
3.2

54 km
North Pacific Ocean, JapanMore
Oct 10, 2021 05:08
38 weeks ago
4.1

50 km
North Pacific Ocean, JapanMore
Oct 9, 2021 16:59
38 weeks ago
3.1

22 km
North Pacific Ocean, 30 km NE of Miyako, Iwate, JapanMore
Oct 9, 2021 05:32
38 weeks ago
5.0

66 km
North Pacific Ocean, 96 km NE of Morioka, Iwate, JapanMore
Oct 7, 2021 19:17
39 weeks ago
2.6

50 km
North Pacific Ocean, 53 km NE of Miyako, Iwate, JapanMore
Oct 6, 2021 06:25
39 weeks ago
2.7

52 km
North Pacific Ocean, 51 km NE of Miyako, Iwate, JapanMore
Oct 6, 2021 00:04
39 weeks ago
2.8

50 km
North Pacific Ocean, 52 km NE of Miyako, Iwate, JapanMore
Oct 5, 2021 22:33
39 weeks ago
4.2

52 km
North Pacific Ocean, 52 km NE of Miyako, Iwate, JapanMore
Oct 5, 2021 18:01
39 weeks ago
2.7

51 km
North Pacific Ocean, 48 km NE of Miyako, Iwate, JapanMore
Oct 5, 2021 17:56
39 weeks ago
2.9

51 km
North Pacific Ocean, 54 km NE of Miyako, Iwate, JapanMore

Earlier earthquakes in the same area

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