Very strong mag. 6.1 earthquake - Bismarck Sea, 233 km northeast of Madang, Papua New Guinea, on Wednesday, 21 July 2021 at 14:26 (GMT)

Very strong mag. 6.1 earthquake - Bismarck Sea, 233 km northeast of Madang, Papua New Guinea, on 22 Jul 12:26 am (GMT +10)

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Very strong mag. 6.1 earthquake - Bismarck Sea, 233 km northeast of Madang, Papua New Guinea, on 22 Jul 12:26 am (GMT +10) Very strong mag. 6.1 earthquake - Bismarck Sea, 233 km northeast of Madang, Papua New Guinea, on 22 Jul 12:26 am (GMT +10)

Very strong magnitude 6.1 earthquake at 10 km depth

21 Jul 14:34 UTC: First to report: GFZ after 9 minutes.
21 Jul 14:36: Magnitude recalculated from 5.7 to 5.6. Epicenter location corrected by 3.1 km (2 mi) towards NE.
21 Jul 16:22: Magnitude recalculated from 5.6 to 6.1.

Earthquake details

Date & timeJul 21, 2021 14:26:03 UTC -
Local time at epicenter22 Jul 12:26 am (GMT +10)
StatusConfirmed
Magnitude6.1
Depth10.0 km
Epicenter latitude / longitude3.39°S / 146.81°E (Bismarck Sea, Papua New Guinea)
Antipode3.39°N / 33.19°W
Shaking intensityStrong shaking near epicenter
Felt0 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoBaluan (105 km / 65 mi)
Nearby towns and cities159 km (99 mi) SSW of Lorengau (Manus District) (pop: 5,810) | Show on map | Quakes nearby
233 km (145 mi) NNE of Madang (pop: 27,400) | Show on map | Quakes nearby
339 km (210 mi) NNE of Goroka (pop: 18,500) | Show on map | Quakes nearby
353 km (219 mi) E of Wewak (pop: 18,200) | Show on map | Quakes nearby
357 km (222 mi) NE of Kundiawa (pop: 9,380) | Show on map | Quakes nearby
371 km (231 mi) N of Lae (pop: 76,300) | Show on map | Quakes nearby
396 km (246 mi) NE of Hagen (Dei District) (pop: 33,600) | Show on map | Quakes nearby
440 km (274 mi) WNW of Kimbe (Talasea District) (pop: 18,800) | Show on map | Quakes nearby
465 km (289 mi) NE of Mendi (pop: 26,300) | Show on map | Quakes nearby
678 km (421 mi) N of Port Moresby (pop: 283,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 28.4°C (83 F), humidity: 74%, wind: 4 m/s (7 kts) from E
Estimated seismic energy released8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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
6.110 kmPapua New Guinea: Bismarck SeaGFZ
5.910 kmPapua New Guinea: BISMARCK SEAEMSC
5.510 kmPapua New Guinea: Near LaeRENASS
5.710 kmPapua New Guinea: Bismarck SeaBMKG
6.08.7 km150 Km SSW of Lorengau, Papua New GuineaUSGS
6.110 kmPapua New Guinea: Bismarck SeaGeoAu

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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (2 quakes)

Date and timeMag
Depth
LocationDetails
Sep 14, 2021 03:54
47 weeks ago
4.4

48 km
Bismarck Sea, 214 km NE of Madang, Papua New GuineaMore
Jul 21, 2021 23:07
1 year 3 weeks ago
4.8

10 km
Bismarck Sea, 250 km NE of Madang, Papua New GuineaMore

Earlier earthquakes in the same area

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