Moderate mag. 4.6 earthquake - East China Sea, 42 km east of Kumi Island, Okinawa, Japan, on 18 Jun 6:40 pm (GMT +9) -

Moderate mag. 4.6 earthquake - East China Sea, 42 km east of Kumi Island, Okinawa, Japan, on 18 Jun 6:40 pm (GMT +9)

Moderate magnitude 4.6 earthquake at 35 km depth

18 Jun 09:51 UTC: First to report: EMSC after 10 minutes.
18 Jun 10:07: Magnitude recalculated from 4.5 to 4.6. Hypocenter depth recalculated from 20.0 to 35.0 km (from 12.4 to 22 mi). Epicenter location corrected by 18 km (10.9 mi) towards WNW.
... [show all] ...
18 Jun 11:25: Hypocenter depth recalculated from 31.0 to 35.0 km (from 19.3 to 22 mi). Epicenter location corrected by 2.3 km (1.4 mi) towards WNW.
Update Fri, 18 Jun 2021, 09:57
Moderate magnitude 4.5 earthquake 67 km west of Ishigaki, Japan
4.5 quake 18 Jun 6:40 pm (GMT +9)
4.5 quake 18 Jun 6:40 pm (GMT +9)
An earthquake of magnitude 4.5 occurred early evening on Friday 18 June 2021 at 6:40 pm local time near Ishigaki, Okinawa, Japan, as reported by the European-Mediterranean Seismological Centre (EMSC).
According to preliminary data, the quake was located at a shallow depth of 20 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Yonakuni (pop. 1,700) located 54 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ishigaki (pop. 44,800) located 67 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 data:

Date & time: 18 Jun 2021 09:40:44 UTC -
Local time at epicenter: 18 Jun 6:40 pm (GMT +9)
Magnitude: 4.6
Depth: 35.0 km
Epicenter latitude / longitude: 24.39°N / 123.4°E (East China Sea, Japan)
Nearest volcano: Iriomote-jima (58 km / 36 mi)
Nearby towns and cities:
41 km (26 mi) E of Yonakuni (pop: 1,680) --> See nearby quakes!
77 km (48 mi) W of Ishigaki (pop: 44,800) --> See nearby quakes!
172 km (107 mi) ESE of Yilan (Taiwan) (pop: 94,200) --> See nearby quakes!
187 km (116 mi) ESE of Keelung (Taiwan) (pop: 397,500) --> See nearby quakes!
188 km (117 mi) ENE of Hualien City (Taiwan) (pop: 350,500) --> See nearby quakes!
198 km (123 mi) WSW of Hirara (Miyakojima) (pop: 34,400) --> See nearby quakes!
202 km (126 mi) ESE of Taipei (Taiwan) (pop: 7,871,900) --> See nearby quakes!
207 km (129 mi) ESE of Banciao (Taiwan) (pop: 543,300) --> See nearby quakes!
220 km (137 mi) ESE of Daxi (Taiwan) (pop: 84,500) --> See nearby quakes!
223 km (138 mi) ESE of Taoyuan City (Taiwan) (pop: 402,000) --> See nearby quakes!
42 km (26 mi) E of Kumi Island (pop: 1,680) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 31.1°C (88 F), humidity: 73%, wind: 2 m/s (3 kts) from SSE
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 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.
4.635 km36 Km ESE of Yonakuni, JapanUSGS
4.610 kmSouthwestern Ryukyu Islands, JapanBMKG
4.624 kmSouthwestern Ryukyu Islands, JapanGFZ

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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