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Strong mag. 6.1 earthquake - Coral Sea, Vanuatu, on Monday, Oct 18, 2021 at 6:26 pm (GMT +11) -

Strong mag. 6.1 earthquake - Coral Sea, Vanuatu, on Monday, Oct 18, 2021 at 6:26 pm (GMT +11) Strong mag. 6.1 earthquake - Coral Sea, Vanuatu, on Monday, Oct 18, 2021 at 6:26 pm (GMT +11)

Strong magnitude 6.1 earthquake at 105 km depth

18 Oct 07:35 UTC: First to report: GFZ after 8 minutes.
18 Oct 07:37: Hypocenter depth recalculated from 104.0 to 105.0 km (from 65 to 65 mi). Epicenter location corrected by 6.9 km (4.3 mi) towards ENE.
18 Oct 08:21: Magnitude recalculated from 6.0 to 6.1.

Earthquake details

Date & timeOct 18, 2021 07:26:53 UTC -
Local time at epicenterMonday, Oct 18, 2021 at 6:26 pm (GMT +11)
StatusConfirmed
Magnitude6.1
Depth105.0 km
Epicenter latitude / longitude13.68°S / 166.93°E (Coral Sea, Vanuatu)
Antipode13.68°N / 13.07°W
Shaking intensityLight shaking
Felt3 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearest volcanoSuretamatai (60 km / 37 mi)
Nearby towns and cities71 km (44 mi) WNW of Sola (pop: 1,170) | Show on map | Quakes nearby
152 km (95 mi) N of Port-Olry (pop: 1,950) | Show on map | Quakes nearby
206 km (128 mi) N of Santo (Luganville) (pop: 13,400) | Show on map | Quakes nearby
270 km (168 mi) N of Norsup (pop: 3,000) | Show on map | Quakes nearby
351 km (218 mi) SSE of Lata (Santa Cruz Islands, Solomon Islands) (pop: 553) | Show on map | Quakes nearby
73 km (46 mi) SE of Hiw Island (pop: 269) | Show on map | Quakes nearby
295 km (183 mi) NNW of Malakula Island (pop: 22,900) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 28.4°C (83 F), humidity: 74%, wind: 4 m/s (9 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
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.
Mag.DepthLocationSource
6.1105 kmVanuatu IslandsGFZ
6.1100 kmVANUATUEMSC
6.0106 kmVanuatu IslandsBMKG
5.7121 kmVanuatu: Near NouméaRENASS
6.0106 kmVanuatu Islands [Sea: Vanuatu]INGV
6.197 km67 Km WNW of Sola, VanuatuUSGS
5.9103 kmVanuatu IslandsGeoAu

Seismograms

Seismic station: Honiara, Solomon Islands (HNR/IU network) | Distance from quake: 895 km / 556 mi | Show on map | Station Info
Seismic station Honiara, Solomon Islands: 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 (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
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Translate
Vanuatu Islands / Strong shaking (MMI VI) / vertical swinging (up and down) / 20-30 s : I was just sitting on my sofa watching TV with my parents, getting ready to go to my friend's house to do our homework together. Suddenly my light started shaking that it almost fell to the table. Luckily it didn't, just a few parts of the light broke. My | 13 users found this interesting.  
Santo (210.6 km S of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Heard rumble, small quivers and then a few decent shakes | 6 users found this interesting.  
Vanuatu / not felt : No, I didn't felt anything  
Port Vila / Weak shaking (MMI III) / 2-5 s : Very mild, only slight movement  
Tully, north coast Qld, Australia / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (8 quakes)

Date and timeMag
Depth
LocationDetails
Apr 13, 2022 02:32
33 weeks ago
5.4

17 km
Coral Sea, 89 km W of Sola, Torba, VanuatuMore
Jan 16, 2022 05:17
46 weeks ago
5.3

197 km
Coral Sea, VanuatuMore
Jan 3, 2022 02:09
48 weeks ago
6.0

104 km
Coral Sea, VanuatuMore
Dec 29, 2021 21:49
48 weeks ago
4.4

194 km
Coral Sea, 99 km NW of Sola, Torba, VanuatuMore
Dec 12, 2021 13:02
51 weeks ago
4.5

220 km
Coral Sea, 51 km N of Sola, Torba, VanuatuMore
Dec 7, 2021 16:55
52 weeks ago
4.5

115 km
Coral Sea, 61 km W of Sola, Torba, VanuatuMore
Dec 5, 2021 14:22
52 weeks ago
4.5

197 km
Coral Sea, 34 km SW of Sola, Torba, VanuatuMore
Nov 1, 2021 06:50
1 year 5 weeks ago
5.0

10 km
Coral Sea, 39 km SW of Sola, Torba, VanuatuMore

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