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Strong mag. 6.1 earthquake - Near East Coast of Honshu, Japan on Saturday, 12 September 2020 - information

Strong mag. 6.1 earthquake - Near East Coast of Honshu, Japan on Saturday, 12 September 2020

Strong mag. 6.1 earthquake  - Near East Coast of Honshu, Japan on Saturday, 12 September 2020
12 Sep 02:54 UTC: First to report: GFZ after 10 minutes.
12 Sep 05:42: Magnitude recalculated from 6.1 to 6.0.
12 Sep 05:52: Hypocenter depth recalculated from 53.0 to 40.0 km (from 33 to 25 mi). Epicenter location corrected by 11.8 km (7.3 mi) towards WNW.
12 Sep 07:16: Magnitude recalculated from 6.0 to 6.1.
Date & time: Saturday, 12 September 2020 02:44 UTC
Magnitude: 6.1
Depth: 40.0 km
Epicenter latitude / longitude: 38.74°N / 142.17°E (Japan)
Nearest volcano: Kurikoma (134 km / 83 mi)
Nearby towns and cities:
54 km (33 mi) SE of Ōfunato (pop: 35,400)
65 km (40 mi) SE of Kamaishi (pop: 43,100)
73 km (46 mi) SE of Ōtsuchi (pop: 16,500)
125 km (78 mi) NE of Sendai (pop: 1,063,100)
138 km (86 mi) SE of Morioka (pop: 295,200)
404 km (251 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: GFZ
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Sat, 12 Sep 02:44 UTCM 6.1 / 40 kmNear East Coast of Honshu, JapanGFZ
Sat, 12 Sep 02:44 UTCM 6.1 / 51 kmNear East Coast Of Honshu, JapanEMSC
Sat, 12 Sep 02:44 UTCM 6.2 / 46.3 kmNear East Coast of Honshu, JapanGeoAu
Sat, 12 Sep 02:44 UTCM 5.9 / 60 km72 Km SE of Kamaishi, JapanCEIC
Sat, 12 Sep 02:44 UTCM 6.0 / 34.8 kmNear East Coast of Eastern Honshu, Japan [Sea: Japan]INGV
Sat, 12 Sep 02:44 UTCM 5.9 / 60 km72 Km SE of Kamaishi, JapanCEIC
Sat, 12 Sep 02:44 UTCM 6.1 / 32.1 km57 Km SE of Ōfunato, JapanUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
443.5 km SSW of epicenter [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s : I noticed a slight side to side movement on the 8th floor of a building. The television moved back and forth with the movement a little bit. Took about 2-3 seconds for me to realize it was a light earthquake | 3 users found this interesting.
368.6 km SSW of epicenter [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 20-30 s
221 km NNW of epicenter [Map] / Light shaking (MMI IV)
461.6 km SW of epicenter [Map] / not felt
Kawasaki (418.3 km SSW of epicenter) [Map] / Weak shaking (MMI III)
406.7 km SSW of epicenter [Map] / Very weak shaking (MMI II) / vibration and rolling / 20-30 s
435.9 km SSW of epicenter [Map] / Very weak shaking (MMI II) / 5-10 s
Hiroshima (993.5 km WSW of epicenter) [Map] / not felt
401.5 km SW of epicenter [Map] / Weak shaking (MMI III)
Akau St, HI / not felt
Takizawa Japan / Weak shaking (MMI III) / horizontal (sideways) swinging : Shopping at the mall and noticable side to side movements
Shichigahama / Light shaking (MMI IV) / 5-10 s
Nagaizumi, Shizuoka / Light shaking (MMI IV) / 15-20 s
Singapore / not felt

Aftershocks of the 6.1 quake: Near East Coast of Honshu, Japan, 12 Sep 2020 02h44

Show info about this
List of recorded aftershocks, latest first (12 quakes):
  • 30 Sep 2020 13:58 UTC
    | M 4.9 |
    56 km (34.8 mi) depth
    |
    16 km (10 mi) distance
    | GFZ | Details
  • 25 Sep 2020 18:07 UTC
    | M 4.4 |
    40 km (24.9 mi) depth
    |
    49 km (31 mi) distance
    | EMSC | Details
  • 13 Sep 2020 21:25 UTC
    | M 4.0 |
    40 km (24.9 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 12 Sep 2020 20:29 UTC
    | M 4.2 |
    40 km (24.9 mi) depth
    |
    27 km (17 mi) distance
    | EMSC | Details
  • 12 Sep 2020 10:05 UTC
    | M 3.8 |
    40 km (24.9 mi) depth
    |
    5 km (3 mi) distance
    | EMSC | Details
  • 12 Sep 2020 05:40 UTC
    | M 3.5 |
    30 km (18.6 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 12 Sep 2020 05:18 UTC
    | M 3.5 |
    30 km (18.6 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 12 Sep 2020 03:49 UTC
    | M 4.5 |
    40 km (24.9 mi) depth
    |
    9 km (6 mi) distance
    | EMSC | Details
  • 12 Sep 2020 03:31 UTC
    | M 3.7 |
    40 km (24.9 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 12 Sep 2020 03:03 UTC
    | M 4.1 |
    40 km (24.9 mi) depth
    |
    5 km (3 mi) distance
    | EMSC | Details
  • 12 Sep 2020 03:00 UTC
    | M 4.2 |
    30 km (18.6 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 12 Sep 2020 02:50 UTC
    | M 4.9 |
    40 km (24.9 mi) depth
    |
    10 km (6 mi) distance
    | EMSC | Details

Map of aftershocks

Significant earlier earthquakes in the same area since 1900

Strong mag. 6.1 earthquake - Near East Coast of Honshu, Japan on Saturday, 12 September 2020

Map of earlier quakes

 

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