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Strong mag. 6.9 earthquake - on Wednesday, 18 August 2021 at 10:10 (GMT) - information

Terremoto forte mag. 6.9 - Coral Sea, 74 km a nord da Santo, Luganville, Sanma Province, Vanuatu, mercoledì, 18 ago 2021 21:10 (GMT +11) -

Terremoto forte mag. 6.9 - Coral Sea, 74 km a nord da Santo, Luganville, Sanma Province, Vanuatu, mercoledì, 18 ago 2021 21:10 (GMT +11) Terremoto forte mag. 6.9 - Coral Sea, 74 km a nord da Santo, Luganville, Sanma Province, Vanuatu, mercoledì, 18 ago 2021 21:10 (GMT +11)

Terremoto forte magnitudine 6.9 a 90 km di profondità

18 Aug 10:16 UTC: Primo a segnalare: VolcanoDiscovery dopo 6 minuti.
18 Aug 10:17: Ora utilizzando nuova fonte di dati: USGS
... [show all] ...
18 Aug 10:51: Magnitudine ricalcolata da 6.8 a 6.9. Profondità ricalcolata da 91.0 a 89.5 km (da 57 a 56 mi). Posizione dell'epicentro corretta di 4.3 km (2.7 mi) al NNE.
Update Wed, 18 Aug 2021, 10:24

Very strong magnitude 7.1 quake hits 71 km northwest of Luganville, Vanuatu in the evening

7.1 quake 18 Aug 9:10 pm (GMT +11)
7.1 quake 18 Aug 9:10 pm (GMT +11)
An intermediate magnitude 7.1 earthquake was reported in the evening near Luganville, Sanma Province, Vanuatu.
According to the United States Geological Survey, the quake hit on Wednesday 18 August 2021 at 9:10 pm local time at an intermediate depth of 84 km. 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 Geoscience Australia (GeoAu) which listed the quake at magnitude 6.7. Other agencies reporting the same quake include France's Réseau National de Surveillance Sismique (RéNaSS) at magnitude 6.4, Indonesia's Meteorology, Climatology, and Geophysical Agency at magnitude 6.8, the European-Mediterranean Seismological Centre (EMSC) at magnitude 6.8, and the German Research Centre for Geosciences (GFZ) at magnitude 6.7.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
Based on the preliminary seismic data, the quake should have been widely felt by almost everyone in the area of the epicenter. It might have caused light to moderate damage.
Moderate shaking probably occurred in Port-Olry (pop. 2,000) located 20 km from the epicenter, Luganville (pop. 13,400) 71 km away, Sola (pop. 1,200) 134 km away, Norsup (pop. 3,000) 137 km away, and Lakatoro (pop. 710) 141 km away.
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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Dettagli del sismo

Data e ora18 Aug 2021 10:10:04 UTC -
Ora locale all'epicentromercoledì, 18 ago 2021 21:10 (GMT +11)
StatusConfermato
Magnitudine6.9
Prof.89.5 km
Epicentro latitudine / longitudine14.8584°S / 167.1048°E (Coral Sea, Vanuatu)
Antipode14.858°N / 12.895°W
Intensità di scuotimentoScuotimento moderato
Sentito21 rapporti
Fonte dati primariaUSGS (United States Geological Survey)
Vulcano più vicinoGaua (94 km / 58 mi)
Luoghi vicini21 km N da Port-Olry (pop: 1,950) | Mappa | Sismi nelle vicinanze
74 km N da Santo (Luganville) (pop: 13,400) | Mappa | Sismi nelle vicinanze
119 km SSO da Sola (pop: 1,170) | Mappa | Sismi nelle vicinanze
138 km NNO da Norsup (pop: 3,000) | Mappa | Sismi nelle vicinanze
345 km NNO da Port Vila (pop: 35,900) | Mappa | Sismi nelle vicinanze
92 km N da St. Bartholomew Island (pop: 4,270) | Mappa | Sismi nelle vicinanze
163 km NNO da Malakula Island (pop: 22,900) | Mappa | Sismi nelle vicinanze
Meteo all'epicentro al momento del sismoBroken Clouds 26.2°C (79 F), humidity: 82%, wind: 4 m/s (8 kts) from SE
Energia sismica rilasciata stimata1.4 x 1015 joules (392 GWh, equivalent to 3.4 x 105 tons of TNT o 21.1 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.Prof.UbicazioneFonte
6.990 kmVanuatuUSGS
6.998 kmVanuatu IslandsGFZ
6.9100 kmVANUATUEMSC
6.682 kmVanuatu IslandsBMKG
6.5113 kmVanuatu: Near NouméaRENASS
6.994 kmVanuatu IslandsGeoAu
6.6111 kmVanuatu Islands [Sea: Vanuatu]INGV

Seismograms

Seismic station: Honiara, Solomon Islands (HNR/IU network) | Distance from quake: 984 km / 611 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 (29)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Port olry. North East of Santo / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s : A rattling sound....then the shaking for about 10 to 15 seconds... objects fall... A water tank spill out some litre of water.... An old structure of ten metre high...its ceiling, parts of it crumble... | 20 users found this interesting.  
Mele Village, Efate (338.4 km SSE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s : Earthquake was abit heavy but no damages. | 18 users found this interesting. (reported through our app)  
Looelooe,South East of Santo / Very strong shaking (MMI VII) / both vertical and horizontal swinging : I thought my house was gonna bend into half... | 15 users found this interesting.  
Luganville / Strong shaking (MMI VI) / complex rolling (tilting in multiple directions) / 30-60 s : Shaken ! Power went off | 10 users found this interesting.  
Port Vila, Efate (342.4 km SSE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s : Light shaking for an extended period | 9 users found this interesting. (reported through our app)  
Luganville / Moderate shaking (MMI V) / rattling, vibrating / 15-20 s : Moderate shaking. It scared the dogs | 8 users found this interesting.  
Seven Hills (2659.1 km SW of epicenter) [Map] / not felt : Nothing felt | 5 users found this interesting. (reported through our app)  
Noumea New Caledonia (828.1 km S of epicenter) [Map] / Very weak shaking (MMI II) / 30-60 s : Very weak shaking, water moving inside the glass | 5 users found this interesting.  
Ipswich, (2045.3 km SW of epicenter) [Map] / not felt : Nothing felt. Located south of Ipswich, approx 50km east of Brisbane City. | 4 users found this interesting. (reported through our app)  
  • A little far away DYT
Port Vila, Shefa (337.8 km SSE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s : Almost didn't notice it | One user found this interesting. (reported through our app)  
Blacktown, New South Wales (2659.1 km SW of epicenter) [Map] / not felt : Nothing felt | One user found this interesting. (reported through our app)  
Luganville town Vanuatu / Very weak shaking (MMI II) / 15-20 s : it was the longest shake i ever feel in my life | One user found this interesting.  
South Grafton, Clarence Valley (2207.4 km SW of epicenter) [Map] / not felt (reported through our app)
Port Vila, Shefa (338.7 km SSE of epicenter) [Map] / not felt (reported through our app)
Coral Sea (900.3 km SSW of epicenter) [Map] / Strong shaking (MMI VI) / vibration and rolling / 1-2 minutes
Luganville, Sanma (73 km S of epicenter) [Map] / Strong shaking (MMI VI) / horizontal (sideways) swinging / 15-20 s
port vila (347.2 km SSE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 15-20 s
Santo / Very strong shaking (MMI VII) / vertical swinging (up and down) / 30-60 s
Port Vila Vanuatu (346.9 km SSE of epicenter) [Map] / not felt
Malekula / Strong shaking (MMI VI) / complex rolling (tilting in multiple directions) / 30-60 s
Port Vila / Light shaking (MMI IV) / 10-15 s
Wollongong (2721 km SSW of epicenter) [Map] / not felt (reported through our app)
Barrier beach (69.9 km S of epicenter) [Map] / Strong shaking (MMI VI) / rattling, vibrating / 20-30 s
One Tree Point, bream bay, Whangarei, New Zealand (2444.1 km SSE of epicenter) [Map] / not felt (reported through our app)
Luganville / Moderate shaking (MMI V) / rattling, vibrating / 10-15 s
Motalava (139 km NNE of epicenter) [Map] / Light shaking (MMI IV) / both vertical and horizontal swinging / 20-30 s (reported through our app)
Luganville, Espiritu Santo, Vanuatu / Moderate shaking (MMI V) / 15-20 s
South Santo (84.5 km SSW of epicenter) [Map] / Strong shaking (MMI VI) / horizontal (sideways) swinging / 1-2 minutes
Luganvile, RedCorner / Moderate shaking (MMI V) / both vertical and horizontal swinging / 20-30 s
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Aftershocks

[More info]

Scosse di assestamento, piu recenti per prima (33 in tutto)

Data e oraMag.
Prof.
UbicazioneDettagli
11 feb 2022 23:47
32 settimane fa
4.9

10 km
Maewo Island, Penama Province, VanuatuPiù
20 gen 2022 10:58
36 settimane fa
5.4

10 km
Coral Sea, VanuatuPiù
3 gen 2022 00:05
38 settimane fa
4.4

105 km
Coral Sea, VanuatuPiù
23 dic 2021 00:47
40 settimane fa
4.7

112 km
Coral Sea, 62 km N da Santo, Luganville, Sanma Province, VanuatuPiù
21 dic 2021 01:34
40 settimane fa
5.0

159 km
Coral Sea, 86 km SE da Santo, Luganville, Sanma Province, VanuatuPiù
12 dic 2021 13:02
41 settimane fa
4.5

220 km
Coral Sea, 51 km N da Sola, Torba, VanuatuPiù
7 dic 2021 16:55
42 settimane fa
4.5

115 km
Coral Sea, 61 km O da Sola, Torba, VanuatuPiù
5 dic 2021 14:22
42 settimane fa
4.5

197 km
Coral Sea, 34 km SO da Sola, Torba, VanuatuPiù
3 dic 2021 02:25
43 settimane fa
4.2

133 km
Coral Sea, 69 km NE da Port-Olry, Sanma Province, VanuatuPiù
20 nov 2021 10:57
44 settimane fa - felt
5.6

128 km
Coral Sea, 48 km E da Santo, Luganville, Sanma Province, VanuatuPiù
14 nov 2021 20:23
45 settimane fa
5.2

10 km
Coral Sea, 77 km SO da Santo, Luganville, Sanma Province, VanuatuPiù
13 nov 2021 18:25
45 settimane fa
4.2

165 km
Coral Sea, 77 km E da Santo, Luganville, Sanma Province, VanuatuPiù
2 nov 2021 13:16
47 settimane fa
4.8

69 km
Coral Sea, 81 km E da Port-Olry, Sanma Province, VanuatuPiù
1 nov 2021 06:50
47 settimane fa
5.0

10 km
Coral Sea, 39 km SO da Sola, Torba, VanuatuPiù
31 ott 2021 15:35
47 settimane fa
4.5

39 km
Coral Sea, 43 km NE da Santo, Luganville, Sanma Province, VanuatuPiù
18 ott 2021 07:26
49 settimane fa - felt
6.1

105 km
Coral Sea, VanuatuPiù
17 ott 2021 15:57
49 settimane fa
4.9

10 km
Coral Sea, VanuatuPiù
14 ott 2021 05:51
50 settimane fa
5.6

128 km
Coral Sea, VanuatuPiù
13 ott 2021 22:25
50 settimane fa
4.5

198 km
Coral Sea, VanuatuPiù
13 ott 2021 22:05
50 settimane fa
4.4

201 km
Coral Sea, VanuatuPiù
2 ott 2021 01:41
51 settimane fa
4.3

121 km
Coral Sea, 67 km NE da Santo, Luganville, Sanma Province, VanuatuPiù
30 set 2021 12:07
52 settimane fa
5.1

172 km
Coral Sea, 44 km O da Sola, Torba, VanuatuPiù
29 set 2021 00:31
52 settimane fa
4.9

10 km
Coral Sea, 84 km SO da Santo, Luganville, Sanma Province, VanuatuPiù
20 set 2021 16:47
1 anno 1 settimane fa
4.6

17 km
Coral Sea, 17 km NO da Port-Olry, Sanma Province, VanuatuPiù
19 set 2021 04:24
1 anno 1 settimane fa
5.1

54 km
Coral Sea, 51 km N da Sola, Torba, VanuatuPiù
17 set 2021 10:48
1 anno 1 settimane fa
4.8

10 km
Coral Sea, 56 km N da Sola, Torba, VanuatuPiù
13 set 2021 17:13
1 anno 2 settimane fa
4.3

149 km
Coral Sea, 38 km NE da Santo, Luganville, Sanma Province, VanuatuPiù
10 set 2021 17:45
1 anno 2 settimane fa
5.2

10 km
Coral Sea, 85 km S da Sola, Torba, VanuatuPiù
6 set 2021 06:22
1 anno 3 settimane fa
4.8

41 km
Coral Sea, 83 km SO da Santo, Luganville, Sanma Province, VanuatuPiù
5 set 2021 12:52
1 anno 3 settimane fa
5.1

42 km
Coral Sea, 90 km S da Sola, Torba, VanuatuPiù
31 ago 2021 13:26
1 anno 4 settimane fa
5.4

10 km
Coral Sea, 39 km N da Sola, Torba, VanuatuPiù
30 ago 2021 23:24
1 anno 4 settimane fa
4.9

40 km
Coral Sea, 30 km NE da Sola, Torba, VanuatuPiù
30 ago 2021 21:03
1 anno 4 settimane fa
5.0

62 km
25 km NE da Sola, Torba, VanuatuPiù

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