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Strong mag. 5.7 earthquake - Philippine Sea, 29 km south of Nichinan, Miyazaki, Japan, on Sunday, Oct 2, 2022 at 12:02 am (GMT +9) -

Strong mag. 5.7 earthquake - Philippine Sea, 29 km south of Nichinan, Miyazaki, Japan, on Sunday, Oct 2, 2022 at 12:02 am (GMT +9) Strong mag. 5.7 earthquake - Philippine Sea, 29 km south of Nichinan, Miyazaki, Japan, on Sunday, Oct 2, 2022 at 12:02 am (GMT +9)

Strong magnitude 5.7 earthquake at 23 km depth

1 Oct 15:05 UTC: First to report: VolcanoDiscovery after 3 minutes.
1 Oct 15:10: Now using data updates from GFZ
... [show all] ...
4 Oct 15:08: Hypocenter depth recalculated from 28.3 to 22.8 km (from 17.6 to 14.2 mi). Epicenter location corrected by 2.8 km (1.7 mi) towards NNW.
Update Sat, 1 Oct 2022, 15:15

Significant earthquake of magnitude 5.5 just reported 30 km south of Nichinan, Japan

5.5 quake 2 Oct 12:02 am (GMT +9)
5.5 quake 2 Oct 12:02 am (GMT +9)
An earthquake of magnitude 5.5 occurred only 13 minutes ago 30 km south of Nichinan, Japan, the German Research Centre for Geosciences (GFZ) reported.
The quake hit at a shallow depth of 10 km beneath the epicenter near Nichinan, Nichinan Shi, Miyazaki, Japan, after midnight on Sunday, October 2nd, 2022, at 12:02 am local time. 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.
A second report was later issued by France's Réseau National de Surveillance Sismique (RéNaSS), which listed it as a magnitude 5.6 earthquake. Other agencies reporting the same quake include the citizen-seismograph network of RaspberryShake at magnitude 5.5, the European-Mediterranean Seismological Centre (EMSC) at magnitude 5.6, and Japan's National Research Institute for Earth Science and Disaster Resilience (NIED) at magnitude 6.2.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
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 Kushima (pop. 22,100) located 24 km from the epicenter, Nichinan (pop. 44,200) 30 km away, Shibushi (pop. 18,300) 34 km away, Sueyoshichō-ninokata (pop. 20,000) 52 km away, Kanoya (pop. 82,300) 54 km away, Miyakonojō (pop. 131,000) 55 km away, and Kokubu-matsuki (pop. 57,900) 76 km away, the quake should have been felt as light shaking.
Weak shaking might have been felt in Kagoshima (pop. 555,400) located 86 km from the epicenter.
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 details

Date & timeOct 1, 2022 15:02:31 UTC -
Local time at epicenterSunday, Oct 2, 2022 at 12:02 am (GMT +9)
StatusConfirmed
Magnitude5.7
Depth22.8 km
Epicenter latitude / longitude31.3447°N / 131.4455°E (Philippine Sea, Japan)
Antipode31.345°S / 48.555°W
Shaking intensityWeak shaking
Felt12 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoSakurajima (79 km / 49 mi)
Nearby towns and cities25 km (15 mi) SE of Kushima (pop: 22,100) | Show on map | Quakes nearby
29 km (18 mi) SSE of Nichinan (pop: 44,200) | Show on map | Quakes nearby
36 km (22 mi) ESE of Shibushi (pop: 18,300) | Show on map | Quakes nearby
56 km (35 mi) SE of Miyakonojō (pop: 131,000) | Show on map | Quakes nearby
57 km (35 mi) E of Kanoya (pop: 82,300) | Show on map | Quakes nearby
88 km (55 mi) ESE of Kagoshima (pop: 555,400) | Show on map | Quakes nearby
177 km (110 mi) SSE of Kumamoto (pop: 680,400) | Show on map | Quakes nearby
904 km (562 mi) WSW of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby
87 km (54 mi) NNE of Tanega Shima Island (pop: 33,000) | Show on map | Quakes nearby
128 km (80 mi) SSE of Kyūshū Island (pop: 13,232,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 25.7°C (78 F), humidity: 70%, wind: 2 m/s (4 kts) from E
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
Show interactive Map
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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
5.723 km24 Km SE of Kushima, JapanUSGS
6.216 kmJapan: SE OFF OSUMI PENNIED
5.740 kmKYUSHU, JAPANEMSC
5.728 kmKyushu, JapanRaspberryShake
5.410 kmJapan: Near FukuokaRENASS
5.847 kmKyushu, Japan [Sea: Japan]INGV
5.728 kmKyushu, JapanGFZ
5.710 kmKyushu, JapanIRIS
5.742 kmKyushu, JapanGeoAu

Seismograms

Seismic station: Inchon, Republic of Korea (INCN/IU network) | Distance from quake: 813 km / 505 mi | Show on map | Station Info
Seismic station Inchon, Republic of Korea: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (12)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
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Kumamoto (174.8 km NNW of epicenter) [Map] / Weak shaking (MMI III) : Woke me up. Felt bed shaking and water bottle making noise. Lasted 10 seconds. | 8 users found this interesting.  
Kagoshima (89 km WNW of epicenter) [Map] / Light shaking (MMI IV) : In bed, whole room shaking while feeding my baby | 7 users found this interesting.  
Hiji, Hayami-gun, Oita (221.8 km N of epicenter) [Map] / Weak shaking (MMI III) : was sitting on a chair, on a fifth floor building, and everything j started shaking | 6 users found this interesting.  
Iwakuni, Yamaguchi (322.5 km NNE of epicenter) [Map] / Very weak shaking (MMI II) : Laying in bed in the 10th floor and felt building shaking. | 5 users found this interesting.  
Iwakuni japan (321.2 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 30-60 s : In bed felt the motion | 4 users found this interesting.  
Beppu, Oita (217 km N of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s : Was sittimg on a chair, and felt the motion of sudden shaking | 3 users found this interesting.  
Iwakuni / Very weak shaking (MMI II) / single vertical bump / very short : Light | 2 users found this interesting.  
Kumamoto (174.8 km NNW of epicenter) [Map] / Weak shaking (MMI III) : Woke me up. Felt bed shaking and water bottle making noise. Lasted 10 seconds.  
Hiji, Hayami-gun, Oita (221.8 km N of epicenter) [Map] / Weak shaking (MMI III) : was sitting on a chair, on a fifth floor building, and everything j started shaking  
Iwakuni, Japan (319.6 km NNE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Miyazaki / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s
立命館アジア太平洋大学 / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s

Aftershocks

[More info]

Recorded aftershocks, latest first (5 quakes)

Date and timeMag
Depth
LocationDetails
Nov 12, 2022 00:30
2 weeks ago
2.9

26 km
Philippine Sea, 84 km S of Miyazaki, JapanMore
Nov 2, 2022 13:27
4 weeks ago
2.5

16 km
Philippine Sea, 43 km SE of Nichinan, Miyazaki, JapanMore
Oct 7, 2022 03:54
7 weeks ago
2.8

26 km
Philippine Sea, 41 km S of Kushima, Miyazaki, JapanMore
Oct 6, 2022 01:50
8 weeks ago
2.6

58 km
5.2 km S of Kushima, Miyazaki, JapanMore
Oct 3, 2022 17:04
8 weeks ago
3.0

26 km
Philippine Sea, 29 km S of Nichinan, Miyazaki, JapanMore

Earlier earthquakes in the same area

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