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Moderate mag. 4.8 earthquake - East China Sea, 94 km southwest of Itoman, Okinawa, Japan, on 24 May 10:41 pm (GMT +8) -

Moderate mag. 4.8 earthquake - East China Sea, 94 km southwest of Itoman, Okinawa, Japan, on 24 May 10:41 pm (GMT +8) Moderate mag. 4.8 earthquake - East China Sea, 94 km southwest of Itoman, Okinawa, Japan, on 24 May 10:41 pm (GMT +8)

Moderate magnitude 4.8 earthquake at 40 km depth

24 May 14:50 UTC: First to report: VolcanoDiscovery after 9 minutes.
24 May 14:51: Now using data updates from EMSC
... [show all] ...
24 May 16:14: Hypocenter depth recalculated from 30.0 to 40.0 km (from 18.6 to 25 mi). Epicenter location corrected by 9.1 km (5.6 mi) towards W.
Update Mon, 24 May 2021, 14:57

Magnitude 4.7 earthquake strikes near Naha, Naha Shi, Okinawa, Japan

4.7 quake 24 May 10:41 pm (GMT +8)
4.7 quake 24 May 10:41 pm (GMT +8)
Just 16 minutes ago, a 4.7-magnitude earthquake struck near Naha, Naha Shi, Okinawa, Japan. The tremor was recorded late at night on Monday 24 May 2021 at 10:41 pm local time, at a shallow depth of 10 km below the surface.
The event was filed by the European-Mediterranean Seismological Centre (EMSC), the first seismological agency to report it.
A second report was later issued by the German Research Centre for Geosciences (GFZ), which listed it as a magnitude 4.7 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Itoman (pop. 57,200) located 85 km from the epicenter, Tomigusuku (pop. 55,700) 92 km away, Naha (pop. 300,800) 95 km away, Chinon (pop. 91,800) 103 km away, Chatan (pop. 27,800) 108 km away, Okinawa (pop. 125,500) 112 km away, Katsuren-haebaru (pop. 34,200) 115 km away, and Gushikawa (pop. 65,300) 117 km away.
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 & timeMay 24, 2021 14:41:03 UTC -
Local time at epicenter24 May 10:41 pm (GMT +8)
Depth40.0 km
Epicenter latitude / longitude25.66°N / 126.89°E (East China Sea, Japan)
Antipode25.66°S / 53.11°W
Shaking intensityWeak shaking
Felt5 reports
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Nearby towns and cities94 km (58 mi) SW of Itoman (pop: 57,200) | Show on map | Quakes nearby
98 km (61 mi) SW of Tomigusuku (pop: 55,700) | Show on map | Quakes nearby
101 km (63 mi) SW of Naha (pop: 300,800) | Show on map | Quakes nearby
110 km (68 mi) SW of Chinon (pop: 91,800) | Show on map | Quakes nearby
114 km (71 mi) SW of Chatan (Nakagami District) (pop: 27,800) | Show on map | Quakes nearby
118 km (73 mi) SW of Okinawa (pop: 125,500) | Show on map | Quakes nearby
124 km (77 mi) SW of Katsuren-haebaru (Uruma) (pop: 34,200) | Show on map | Quakes nearby
125 km (78 mi) SW of Gushikawa (pop: 65,300) | Show on map | Quakes nearby
126 km (78 mi) SW of Ishikawa (Uruma) (pop: 22,400) | Show on map | Quakes nearby
152 km (95 mi) SW of Naga (pop: 59,600) | Show on map | Quakes nearby
145 km (90 mi) SW of Okinawa Island (pop: 1,301,000) | Show on map | Quakes nearby
148 km (92 mi) SW of Iejima Island (pop: 4,610) | Show on map | Quakes nearby
Weather at epicenter at time of quakeScattered Clouds 26.2°C (79 F), humidity: 88%, wind: 5 m/s (10 kts) from N
Estimated seismic energy released1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | 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.
4.756 kmRyukyu Islands, JapanGFZ
4.825 km83 Km SW of Itoman, JapanUSGS


Seismic station: Taipei, Taiwan (TATO/IU network) | Distance from quake: 547 km / 340 mi | Show on map | Station Info
Seismic station Taipei, Taiwan: 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
Show more

User reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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!
Ishikawa, Uruma Shi (126.9 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Chatan (113.9 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Chatan / Light shaking (MMI IV) / horizontal (sideways) swinging
Okinawa / Very weak shaking (MMI II) / single lateral shake / 2-5 s
Okinawa (114.1 km NE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Bed shaking  

Earlier earthquakes in the same area

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