Strong mag. 5.2 earthquake - North Pacific Ocean, 142 km east of Hitachi, Ibaraki, Japan, on Wednesday, Aug 4, 2021 11:56 am (GMT +9) -

Strong mag. 5.2 earthquake - North Pacific Ocean, 142 km east of Hitachi, Ibaraki, Japan, on Wednesday, Aug 4, 2021 11:56 am (GMT +9)

Strong magnitude 5.2 earthquake at 10 km depth

4 Aug 03:05 UTC: First to report: GFZ after 9 minutes.
Date & time: Aug 4, 2021 02:56:23 UTC -
Local time at epicenter: Wednesday, Aug 4, 2021 11:56 am (GMT +9)
Magnitude: 5.2
Depth: 10.0 km
Epicenter latitude / longitude: 36.21°N / 142.16°E (North Pacific Ocean, Japan)
Antipode: 36.21°S / 37.84°W
Nearest volcano: Nasu (220 km / 137 mi)
Nearby towns and cities:
131 km (81 mi) ENE of Hasaki (pop: 39,200) --> See nearby quakes!
139 km (86 mi) ENE of Kashima-shi (pop: 65,800) --> See nearby quakes!
142 km (88 mi) ESE of Kitaibaraki (pop: 50,800) --> See nearby quakes!
142 km (88 mi) ESE of Hitachi (pop: 186,300) --> See nearby quakes!
147 km (91 mi) ENE of Asahi (pop: 41,700) --> See nearby quakes!
147 km (91 mi) E of Katsuta (pop: 156,000) --> See nearby quakes!
147 km (91 mi) E of Hitachi-Naka (pop: 156,800) --> See nearby quakes!
147 km (92 mi) SE of Iwaki (pop: 357,300) --> See nearby quakes!
230 km (143 mi) ENE of Tokyo (pop: 8,336,600) --> See nearby quakes!
242 km (151 mi) ENE of Yokohama (pop: 3,574,400) --> See nearby quakes!
375 km (233 mi) E of Honshū Island (pop: 104,000,000) --> See nearby quakes!
340 km (211 mi) NE of Shikine-jima Island (pop: 600) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 26.7°C (80 F), humidity: 79%, wind: 4 m/s (7 kts) from S
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 4 x 1012 joules (1.11 gigawatt hours, equivalent to 951 tons of TNT) More info
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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
5.210 kmOff East Coast of Honshu, JapanGFZ
4.910 kmOFF EAST COAST OF HONSHU, JAPANEMSC
5.310 kmJapan: Near TokyoRENASS
5.287 kmOff East Coast of Honshu, JapanBMKG
4.910 km123 Km ENE of Hasaki, JapanUSGS
5.228 kmNear East Coast of Honshu, JapanGeoAu

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Translate
bunkyo (224.3 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s
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Aftershocks

More info

Recorded aftershocks, latest first (16 quakes)

  • 26 Aug 2021 02:46 UTC
    | M 3.2 |
    60.1 km (37.3 mi) depth
    |
    14 km (9 mi) distance
    | NIED | Details
  • 21 Aug 2021 15:26 UTC
    | M 2.7 |
    52.8 km (32.8 mi) depth
    |
    21 km (13 mi) distance
    | NIED | Details
  • 06 Aug 2021 14:55 UTC
    | M 3.1 |
    4.6 km (2.9 mi) depth
    |
    5 km (3 mi) distance
    | NIED | Details
  • 06 Aug 2021 04:28 UTC
    | M 3.5 |
    16 km (9.9 mi) depth
    |
    16 km (10 mi) distance
    | NIED | Details
  • 05 Aug 2021 21:10 UTC
    | M 3.7 |
    11.4 km (7.1 mi) depth
    |
    23 km (14 mi) distance
    | NIED | Details
  • 05 Aug 2021 05:55 UTC
    | M 2.9 |
    3.6 km (2.2 mi) depth
    |
    13 km (8 mi) distance
    | NIED | Details
  • 04 Aug 2021 21:00 UTC
    | M 3.2 |
    15 km (9.3 mi) depth
    |
    24 km (15 mi) distance
    | NIED | Details
  • 04 Aug 2021 20:48 UTC
    | M 3.1 |
    57 km (35.4 mi) depth
    |
    13 km (8 mi) distance
    | NIED | Details
  • 04 Aug 2021 16:39 UTC
    | M 2.6 |
    12.4 km (7.7 mi) depth
    |
    20 km (12 mi) distance
    | NIED | Details
  • 04 Aug 2021 14:42 UTC
    | M 3.0 |
    14 km (8.7 mi) depth
    |
    19 km (12 mi) distance
    | NIED | Details
  • 04 Aug 2021 10:28 UTC
    | M 4.7 |
    10 km (6.2 mi) depth
    |
    19 km (12 mi) distance
    | EMSC | Details
  • 04 Aug 2021 09:36 UTC
    | M 3.1 |
    10.8 km (6.7 mi) depth
    |
    19 km (12 mi) distance
    | NIED | Details
  • 04 Aug 2021 09:26 UTC
    | M 4.8 |
    7.2 km (4.5 mi) depth
    |
    18 km (11 mi) distance
    | NIED | Details
  • 04 Aug 2021 06:14 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    21 km (13 mi) distance
    | EMSC | Details
  • 04 Aug 2021 06:08 UTC
    | M 4.9 |
    7.7 km (4.8 mi) depth
    |
    15 km (9 mi) distance
    | NIED | Details
  • 04 Aug 2021 04:11 UTC
    | M 3.9 |
    49.2 km (30.6 mi) depth
    |
    13 km (8 mi) distance
    | NIED | Details

Earlier earthquakes in the same area

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