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Moderate mag. 5.9 earthquake - Northeast of Taiwan, Japan, on Friday, 26 March 2021 at 22:02 (GMT) - information

Moderate mag. 5.9 earthquake - East China Sea, 264 km west of Naha, Okinawa, Japan, on Saturday, Mar 27, 2021 at 7:02 am (GMT +9)

Moderate mag. 5.9 earthquake - East China Sea, 264 km west of Naha, Okinawa, Japan, on Saturday, Mar 27, 2021 at 7:02 am (GMT +9) Moderate mag. 5.9 earthquake - East China Sea, 264 km west of Naha, Okinawa, Japan, on Saturday, Mar 27, 2021 at 7:02 am (GMT +9)

Moderate magnitude 5.9 earthquake at 142 km depth

26 Mar 22:08 UTC: First to report: GFZ after 6 minutes.
26 Mar 22:10: Magnitude recalculated from 5.7 to 6.0. Hypocenter depth recalculated from 143.0 to 141.0 km (from 89 to 88 mi). Epicenter location corrected by 14 km (8.7 mi) towards NNW.
26 Mar 22:17: Magnitude recalculated from 6.0 to 5.9. Hypocenter depth recalculated from 141.0 to 142.0 km (from 88 to 88 mi). Epicenter location corrected by 9.1 km (5.7 mi) towards WNW.
Update Fri, 26 Mar 2021, 22:12

Significant magnitude 6.0 earthquake 146 km north of Hirara, Japan

6.0 quake 27 Mar 7:02 am (GMT +9)
6.0 quake 27 Mar 7:02 am (GMT +9)
A magnitude 6.0 earthquake near Hirara, Miyakojima Shi, Okinawa, Japan, was reported only 10 minutes ago by the German Research Centre for Geosciences (GFZ), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at an intermediate depth of 141 km beneath the epicenter in the morning on Saturday 27 March 2021 at 7:02 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 5.9.
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 Hirara (pop. 34,400) located 146 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 & timeMar 26, 2021 22:02:15 UTC
Local time at epicenterSaturday, Mar 27, 2021 at 7:02 am (GMT +9)
StatusConfirmed
Magnitude5.9
Depth142.0 km
Epicenter latitude / longitude26.15°N / 125.04°E (East China Sea, Japan)
Antipode26.15°S / 54.96°W
Shaking intensityWeak shaking
Felt40 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoIriomote-jima (206 km / 128 mi)
Nearby towns and cities152 km (94 mi) N of Hirara (Miyakojima) (pop: 34,400) | Show on map | Quakes nearby
220 km (136 mi) NNE of Ishigaki (pop: 44,800) | Show on map | Quakes nearby
263 km (163 mi) W of Itoman (pop: 57,200) | Show on map | Quakes nearby
264 km (164 mi) W of Tomigusuku (pop: 55,700) | Show on map | Quakes nearby
264 km (164 mi) W of Naha (pop: 300,800) | Show on map | Quakes nearby
272 km (169 mi) W of Chinon (pop: 91,800) | Show on map | Quakes nearby
276 km (172 mi) W of Okinawa (pop: 125,500) | Show on map | Quakes nearby
283 km (176 mi) W of Gushikawa (pop: 65,300) | Show on map | Quakes nearby
298 km (185 mi) W of Naga (pop: 59,600) | Show on map | Quakes nearby
373 km (232 mi) ENE of Taipei (Taiwan) (pop: 7,871,900) | Show on map | Quakes nearby
279 km (174 mi) NE of Kumi Island (pop: 1,680) | Show on map | Quakes nearby
281 km (175 mi) WSW of Iejima Island (pop: 4,610) | Show on map | Quakes nearby
295 km (183 mi) W of Okinawa Island (pop: 1,301,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 22.4°C (72 F), humidity: 81%, wind: 10 m/s (19 kts) from SSE
Estimated seismic energy released4.5 x 1013 joules (12.4 gigawatt hours, equivalent to 10676 tons of TNT or 0.7 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
5.9142 kmNortheast of Taiwan, JapanGFZ
5.9145 kmNORTHEAST OF TAIWAN, JapanEMSC
5.8145 kmNortheast of Taiwan, JapanBMKG
5.8156 kmNear Taipei, JapanRENASS
5.9153 km146 Km N of Hirara, JapanUSGS
6.0154 kmConflict Zone China/Japan/Taiwan [Sea]INGV
5.9142 kmNortheast of Taiwan, JapanGeoAu
6.1130 km琉球群岛西南部, JapanCEIC

Seismograms

Seismic station: Taipei, Taiwan (TATO/IU network) | Distance from quake: 379 km / 235 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
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User reports for this quake (41)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Okinawa City, Akemichi 1-18 / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Approximately 0702 on 27Mar2021 Saturday morning, the second story of our recently purchased home, laterally shook for more than two seconds. Felt by my wife and I. | 6 users found this interesting.  
Naha, Okinawa japan / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : I was in bed and my bed was shaking, I figured at that point it had to be an earthquake | 5 users found this interesting.  
Onna-son, okinawa (280.1 km E of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s : Very light shaking preceding stronger few second shake | 4 users found this interesting.  
Goya, Okinawa City, Okinawa / Weak shaking (MMI III) / vibration and rolling / 20-30 s : Gentle shaking, I could feel it sitting in my seat. The light fixture was moving. | 3 users found this interesting.  
Okinawa / not felt : Didn’t feel anything | 3 users found this interesting.  
Santa Cruz, Marinduque, Philippines / Very weak shaking (MMI II) / rattling, vibrating : Awoke me but my wife didn’t feel it. | 2 users found this interesting.  
Chibana, Okinawa, Japan / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : Felt my bed moving from foot to head 2-3 time. | 2 users found this interesting.  
Bagong Pagasa, PH.40.F2, Calabarzon (1339.3 km SSW of epicenter) [Map] / Very weak shaking (MMI II) : Sentí un poco de temblando débil | One user found this interesting. (reported through our app)  
Chatan, Nakagami, Okinawa (271.1 km E of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 5-10 s : Chitan | One user found this interesting.  
Katsuren Haebaru, Uruma City, Okinawa, Japan / Very weak shaking (MMI II) / single lateral shake / 2-5 s : While lying in bed, the bed began to sway lightly, sude to side. It is a heavy bed. | One user found this interesting.  
Imus, Cavite, Calabarzon (1374.3 km SSW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Okinawa (278.6 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
Okinawa (276.8 km E of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s
Chatan, Nakagami, Okinawa (270.5 km E of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s
Chatan, Nakagami, Okinawa (272 km E of epicenter) [Map] / Weak shaking (MMI III) / 5-10 s
Okinawa (275 km E of epicenter) [Map] / Light shaking (MMI IV) / very short
Chinon, Ginowan Shi, Okinawa (271.8 km E of epicenter) [Map] / Weak shaking (MMI III)
Yomitan, Okinawa (266.5 km E of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
Uruma city Okinawa main island / Light shaking (MMI IV) / complex motion difficult to describe
okinawa / Weak shaking (MMI III) / 5-10 s
Yomitan-son, Nakagumi-gun, Okinawa / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
Naha-Shi (262.4 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Okinawa / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
USAF Kadena AB / Weak shaking (MMI III) / 5-10 s
Okinawa Japan / Weak shaking (MMI III) / rattling, vibrating / 10-15 s
Kin (289.4 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
Ginowan, Okinawa / Moderate shaking (MMI V)
okinawa japan (265.4 km E of epicenter) [Map] / Moderate shaking (MMI V)
Naha / Weak shaking (MMI III)
Okinawa Japan / Very weak shaking (MMI II)
Chatan, Okinawa (262 km E of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
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Aftershocks

[More info]

Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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