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Strong mag. 5.5 earthquake - North Pacific Ocean, 277 km southeast of Chiba, Japan, on Tuesday, May 17, 2022 at 10:17 pm (GMT +9) -

Strong mag. 5.5 earthquake - North Pacific Ocean, 277 km southeast of Chiba, Japan, on Tuesday, May 17, 2022 at 10:17 pm (GMT +9) Strong mag. 5.5 earthquake - North Pacific Ocean, 277 km southeast of Chiba, Japan, on Tuesday, May 17, 2022 at 10:17 pm (GMT +9)

Strong magnitude 5.5 earthquake at 11 km depth

17 May 13:26 UTC: First to report: GFZ after 9 minutes.
17 May 13:38: Now using data updates from USGS
17 May 13:43: Hypocenter depth recalculated from 11.1 to 10.7 km (from 6.9 to 6.6 mi). Epicenter location corrected by 2.5 km (1.6 mi) towards NW.
17 May 14:34: Hypocenter depth recalculated from 10.7 to 11.4 km (from 6.6 to 7.1 mi).

Earthquake details

Date & timeMay 17, 2022 13:17:51 UTC -
Local time at epicenterTuesday, May 17, 2022 at 10:17 pm (GMT +9)
StatusConfirmed
Magnitude5.5
Depth11.4 km
Epicenter latitude / longitude33.3876°N / 141.5066°E (North Pacific Ocean, Japan)
Antipode33.388°S / 38.493°W
Shaking intensityStrong shaking near epicenter
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoHachijo-jima (164 km / 102 mi)
Nearby towns and cities224 km (139 mi) SSE of Katsuura (pop: 22,300) | Show on map | Quakes nearby
252 km (157 mi) SSE of Mobara (pop: 97,300) | Show on map | Quakes nearby
265 km (165 mi) SE of Kisarazu (pop: 122,500) | Show on map | Quakes nearby
270 km (168 mi) SE of Yokosuka (pop: 429,000) | Show on map | Quakes nearby
270 km (168 mi) SSE of Ichihara (pop: 283,500) | Show on map | Quakes nearby
277 km (172 mi) SSE of Chiba (pop: 919,700) | Show on map | Quakes nearby
284 km (177 mi) SE of Yokohama (pop: 3,574,400) | Show on map | Quakes nearby
305 km (190 mi) SE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
162 km (101 mi) ENE of Hachijojima Island (pop: 7,520) | Show on map | Quakes nearby
236 km (147 mi) ESE of Shikine-jima Island (pop: 600) | Show on map | Quakes nearby
433 km (269 mi) SE of Honshu Island (pop: 104,000,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 17.7°C (64 F), humidity: 89%, wind: 4 m/s (8 kts) from NE
Estimated seismic energy released1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 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
5.511 km223 Km SSE of Katsuura, JapanUSGS
5.510 kmOFF EAST COAST OF HONSHU, JAPANEMSC
5.511 kmOff East Coast of Honshu, JapanRaspberryShake
5.310 kmJapan: Near TokyoRENASS
5.510 km226 Km SSE of Katsuura, JapanGFZ
5.416 kmOff 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.
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Tokyo (306.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
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Aftershocks

[More info]

Recorded aftershocks, latest first (10 quakes)

Date and timeMag
Depth
LocationDetails
May 28, 2022 08:07
5 weeks ago
4.7

10 km
North Pacific Ocean, JapanMore
May 25, 2022 08:35
6 weeks ago
3.8

112 km
North Pacific Ocean, JapanMore
May 23, 2022 22:12
6 weeks ago
4.3

10 km
North Pacific Ocean, JapanMore
May 22, 2022 17:20
6 weeks ago
4.9

19 km
North Pacific Ocean, JapanMore
May 22, 2022 16:57
6 weeks ago
5.1

10 km
North Pacific Ocean, 280 km SE of Chiba, JapanMore
May 22, 2022 16:46
6 weeks ago
4.5

10 km
North Pacific Ocean, 293 km SE of Chiba, JapanMore
May 22, 2022 15:17
6 weeks ago
6.0

12 km
North Pacific Ocean, JapanMore
May 19, 2022 11:15
6 weeks ago
4.9

10 km
North Pacific Ocean, 281 km SE of Chiba, JapanMore
May 19, 2022 00:14
6 weeks ago
4.3

10 km
North Pacific Ocean, 298 km SE of Chiba, JapanMore
May 18, 2022 03:52
7 weeks ago
5.6

13 km
North Pacific Ocean, JapanMore

Earlier earthquakes in the same area

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