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Very strong mag. 6.1 earthquake - Bismarck Sea, 195 km north of Madang, Papua New Guinea, on Tuesday, 27 April 2021 at 08:05 (GMT)

Very strong mag. 6.1 earthquake - Bismarck Sea, 195 km north of Madang, Papua New Guinea, on 27 Apr 6:05 pm (GMT +10)

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Very strong mag. 6.1 earthquake - Bismarck Sea, 195 km north of Madang, Papua New Guinea, on 27 Apr 6:05 pm (GMT +10) Very strong mag. 6.1 earthquake - Bismarck Sea, 195 km north of Madang, Papua New Guinea, on 27 Apr 6:05 pm (GMT +10)

Very strong magnitude 6.1 earthquake at 10 km depth

27 Apr 08:13 UTC: First to report: GFZ after 8 minutes.
27 Apr 08:14: Magnitude recalculated from 6.0 to 5.9. Epicenter location corrected by 5.7 km (3.5 mi) towards S.
27 Apr 08:23: Magnitude recalculated from 5.9 to 6.1. Epicenter location corrected by 1.1 km (0.7 mi) towards W.

Earthquake details

Date & timeApr 27, 2021 08:05:32 UTC -
Local time at epicenter27 Apr 6:05 pm (GMT +10)
StatusConfirmed
Magnitude6.1
Depth10.0 km
Epicenter latitude / longitude3.49°S / 145.53°E (Bismarck Sea, Papua New Guinea)
Antipode3.49°N / 34.47°W
Shaking intensityStrong shaking near epicenter
Felt0 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoBam (81 km / 50 mi)
Nearby towns and cities195 km (121 mi) N of Madang (pop: 27,400) | Show on map | Quakes nearby
211 km (131 mi) E of Wewak (pop: 18,200) | Show on map | Quakes nearby
252 km (157 mi) SW of Lorengau (Manus District) (pop: 5,810) | Show on map | Quakes nearby
288 km (179 mi) NNE of Kundiawa (pop: 9,380) | Show on map | Quakes nearby
289 km (180 mi) N of Goroka (pop: 18,500) | Show on map | Quakes nearby
300 km (186 mi) NE of Wabag (pop: 3,960) | Show on map | Quakes nearby
300 km (187 mi) NNE of Hagen (Dei District) (pop: 33,600) | Show on map | Quakes nearby
361 km (224 mi) NE of Mendi (pop: 26,300) | Show on map | Quakes nearby
395 km (245 mi) NNW of Lae (pop: 76,300) | Show on map | Quakes nearby
690 km (428 mi) NNW of Puerto Moresby (pop: 283,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 28.8°C (84 F), humidity: 69%, wind: 3 m/s (6 kts) from N
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 kmNear N. Coast of New Guinea, PNG., Papua New GuineaGFZ
5.910 kmNEAR N COAST OF NEW GUINEA, PNG., Papua New GuineaEMSC
6.210 kmNear N. Coast of New Guinea, PNG., Papua New GuineaBMKG
5.610 kmNear Lae, Papua New GuineaRENASS
6.110 km174 Km ENE of Angoram, Papua New GuineaUSGS
6.010.2 kmNear North Coast of New Guinea, Papua New Guinea [Sea: Papua New Guinea]INGV
6.110 kmNear N. Coast of New Guinea, PNG., Papua New GuineaGeoAu

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Earlville, Cairns, Queensland (1499.8 km S of epicenter) [Map] / not felt (reported through our app)
Volcanoes & Earthquakes - new app for Android

Aftershocks

[More info]

Recorded aftershocks, latest first (6 quakes)

Date and timeMag
Depth
LocationDetails
Aug 5, 2021 19:51
42 weeks ago
4.8

10 km
Bismarck Sea, 196 km N of Madang, Papua New GuineaMore
Jul 18, 2021 09:35
45 weeks ago
5.0

10 km
Bismarck Sea, 175 km N of Madang, Papua New GuineaMore
Jun 1, 2021 21:41
51 weeks ago
4.7

53 km
Bismarck Sea, 157 km N of Madang, Papua New GuineaMore
Apr 27, 2021 15:01
1 year 4 weeks ago
4.6

57 km
Bismarck Sea, 134 km N of Madang, Papua New GuineaMore
Apr 27, 2021 11:04
1 year 4 weeks ago
5.5

10 km
Bismarck Sea, 199 km N of Madang, Papua New GuineaMore
Apr 27, 2021 10:40
1 year 4 weeks ago - felt
5.2

10 km
Bismarck Sea, 202 km N of Madang, Papua New GuineaMore

Earlier earthquakes in the same area

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