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Very strong mag. 6.1 earthquake - Bismarck Sea, 196 km north of Madang, Papua New Guinea, on Saturday, 10 April 2021 at 11:38 (GMT)

Very strong mag. 6.1 earthquake - Bismarck Sea, 196 km north of Madang, Papua New Guinea, on 10 Apr 9:38 pm (GMT +10)

Very strong mag. 6.1 earthquake - Bismarck Sea, 196 km north of Madang, Papua New Guinea, on 10 Apr 9:38 pm (GMT +10) Very strong mag. 6.1 earthquake - Bismarck Sea, 196 km north of Madang, Papua New Guinea, on 10 Apr 9:38 pm (GMT +10)

Very strong magnitude 6.1 earthquake at 10 km depth

10 Apr 11:46 UTC: First to report: GFZ after 8 minutes.
10 Apr 11:48: Epicenter location corrected by 6.8 km (4.2 mi) towards S.
10 Apr 13:30: Magnitude recalculated from 5.8 to 6.1. Epicenter location corrected by 2.2 km (1.4 mi) towards W.

Earthquake details

Date & timeApr 10, 2021 11:38:33 UTC
Local time at epicenter10 Apr 9:38 pm (GMT +10)
StatusConfirmed
Magnitude6.1
Depth10.0 km
Epicenter latitude / longitude3.46°S / 145.66°E (Bismarck Sea, Papua New Guinea)
Antipode3.46°N / 34.34°W
Shaking intensityLight shaking
Felt2 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoBam (97 km / 60 mi)
Nearby towns and cities196 km (122 mi) N of Madang (pop: 27,400) | Show on map | Quakes nearby
225 km (140 mi) E of Wewak (pop: 18,200) | Show on map | Quakes nearby
239 km (149 mi) SW of Lorengau (Manus District) (pop: 5,810) | Show on map | Quakes nearby
294 km (182 mi) N of Goroka (pop: 18,500) | Show on map | Quakes nearby
295 km (183 mi) NNE of Kundiawa (pop: 9,380) | Show on map | Quakes nearby
310 km (193 mi) NNE of Hagen (Dei District) (pop: 33,600) | Show on map | Quakes nearby
315 km (196 mi) N of Kainantu (pop: 8,510) | Show on map | Quakes nearby
372 km (231 mi) NE of Mendi (pop: 26,300) | Show on map | Quakes nearby
392 km (244 mi) NNW of Lae (pop: 76,300) | Show on map | Quakes nearby
689 km (428 mi) NNW of Port Moresby (pop: 283,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Rain 28.3°C (83 F), humidity: 79%, wind: 10 m/s (20 kts) from WNW
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
6.02 kmNEAR N COAST OF NEW GUINEA, PNG., Papua New GuineaEMSC
6.262 kmNear N. Coast of New Guinea, PNG., Papua New GuineaBMKG
5.410 kmNear Lae, Papua New GuineaRENASS
6.010.2 kmNear North Coast of New Guinea, Papua New Guinea [Sea: Papua New Guinea]INGV
6.010 km195 Km N of Madang, Papua New GuineaUSGS
6.015 kmNear N. Coast of New Guinea, PNG., Papua New GuineaGeoAu

Seismograms

Seismic station: Tucson, Arizona (TUC/IU network) | Distance from quake: 11486 km / 7137 mi | Show on map | Station Info
Seismic station Tucson, Arizona: 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. Bandpass filter applied: 0.02-2.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Calistoga Ca USA / Light shaking (MMI IV) / single vertical bump / 2-5 s : It was a jolt, strong quick shake and over | 2 users found this interesting.  
Honiara (1716.1 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s (reported through our app)
Düsseldorf (13482.5 km NNW of epicenter) [Map] / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (11 quakes)

Date and timeMag
Depth
LocationDetails
Aug 5, 2021 19:51
1 year 34 weeks ago
4.8

10 km
Bismarck Sea, 196 km N of Madang, Papua New GuineaMore
Jul 18, 2021 09:35
1 year 36 weeks ago
5.0

10 km
Bismarck Sea, 175 km N of Madang, Papua New GuineaMore
Jun 3, 2021 15:32
1 year 43 weeks ago
4.6

10 km
Bismarck Sea, 232 km N of Madang, Papua New GuineaMore
Jun 1, 2021 21:41
1 year 43 weeks ago
4.7

53 km
Bismarck Sea, 157 km N of Madang, Papua New GuineaMore
Apr 27, 2021 15:01
1 year 48 weeks ago
4.6

57 km
Bismarck Sea, 134 km N of Madang, Papua New GuineaMore
Apr 27, 2021 11:04
1 year 48 weeks ago
5.5

10 km
Bismarck Sea, 199 km N of Madang, Papua New GuineaMore
Apr 27, 2021 10:40
1 year 48 weeks ago - felt
5.2

10 km
Bismarck Sea, 202 km N of Madang, Papua New GuineaMore
Apr 27, 2021 08:05
1 year 48 weeks ago
6.1

10 km
Bismarck Sea, 195 km N of Madang, Papua New GuineaMore
Apr 27, 2021 08:03
1 year 48 weeks ago
5.0

27 km
Bismarck Sea, 200 km N of Madang, Papua New GuineaMore
Apr 27, 2021 02:12
1 year 48 weeks ago
5.6

10 km
Bismarck Sea, 208 km N of Madang, Papua New GuineaMore
Apr 10, 2021 12:27
1 year 50 weeks ago
4.6

118 km
Bismarck Sea, 162 km N of Madang, Papua New GuineaMore

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