Strong mag. 6.4 earthquake - 41 Km NE of Pangai, Tonga on Thursday, 1 October 2020 - information

Forte terremoto magnitudine 6.4 - 42 km northeast da Pangai, Ha\'apai, Tonga, giovedì, 01 ottobre 2020

- Forte terremoto magnitudine 6.4 - 42 km northeast da Pangai, Ha\'apai, Tonga, giovedì, 01 ottobre 2020

Strong magnitude 6.4 earthquake at 28 km depth

1 Oct 01:21 UTC: Primo a segnalare: USGS dopo 8 minuti.
1 Oct 01:24: Posizione dell'epicentro corretta di 5 km (3.1 mi) al NE.
... [show all] ...
2 Oct 02:20: Profondità ricalcolata da 35.0 a 28.0 km (da 22 a 17.4 mi). Posizione dell'epicentro corretta di 15.6 km (9.7 mi) al ESE.
Data & ora: 1 Oct 2020 01:13:36 UTC -
Magnitudine: 6.4
Profondità: 28.0 km
Epicentro latitudine / longitudine: 19,5355°S / 174,0834°W (Tonga)
Vulcano più vicino: Late (113 km / 70 mi)
Nearby towns and cities:
42 km NE da Pangai (pop: 1,740)
99 km S da Neiafu (pop: 4,320)
205 km NNE da Kolonga (pop: 1,100)
213 km NNE da Nuku'alofa (pop: 22,400)
213 km NNE da Nuku‘alofa (pop: 22,400)
219 km NNE da ‘Ohonua (Ohonua) (pop: 1,240)
399 km S da Hihifo (pop: 815)
681 km SSW da Apia (Samoa) (pop: 40,400)
Weather at epicenter at time of quake:
Broken Clouds 28°C (82 F), humidity: 83%, wind: 4 m/s (7 kts) from N
Fonte dati primaria: USGS
Stima dell'energia sismica liberata: 2,5 x 1014 joules (69,8 gigawatt hours, equivalent to 60036 tons of TNT or 3,8 atomic bombs!) More info
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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.
MagnitudineProfonditàUbicazioneFonte
M 6.428 km41 Km NE of Pangai, TongaUSGS
M 6.549 km39 Km N of Pangai, TongaGFZ
M 6.510 km6.4 TongaEMSC
M 6.642 km32 Km NNE of Pangai, TongaGeoAu
M 6.520 kmTonga Islands [Sea: Tonga]INGV
M 6.5109 km39 Km N of Pangai, TongaBMKG

User reports for this quake (13)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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104.3 km N of epicenter [Map] / Strong shaking (MMI VI) / rattling, vibrating / 15-20 s : Definitely strong shaking but no damage found so far. I wondered if my 3 storey house was going to survive. And could hear the water sloshing in the solar storage on the roof. Felt all at sea. | 4 users found this interesting.
Brawley ca (21 km WNW of epicenter) [Map] / Very strong shaking (MMI VII) / horizontal (sideways) swinging / 20-30 s : Since 5pm thru 730 every 5 to 10 minutes shaking then at 745 & 845 2.7 hits | 2 users found this interesting.
213.1 km SSW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Nukualofa (213.5 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Neiafu town center / Moderate shaking (MMI V) / both vertical and horizontal swinging / 15-20 s : It was more of a light maybe a little more but not quiet as strong as moderate shacking, Our shop all items hanging were shaking, and the cans and tubes or marine sealants,cleaners,aersoals fell over and onto the floor, the car parked outside was shaking too, Felt by most inside, but it seems like people out and about didn't really feel it. Our hanging items were swinging for a good 3 -5 minutes after the shake. It made a fair bit of rumbling noise. | 6 users found this interesting.
Alofi Niue / Weak shaking (MMI III) / 10-15 s : Very short but noticeable. My chair was trembling for about 10 to 15 seconds. | 3 users found this interesting.
Paliati, alofi north,niue / Weak shaking (MMI III) / 2-5 s : Heard noises from the roof. Plastic desk is shaking a little bit | 2 users found this interesting.
Mu'a, Tonga / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s
Fua'amotu at Kupesi Hotel / not felt : I didn't feel anything
Palmerston North / not felt
Burnaby bc Canada / not felt
Island of Vava'u, Tonga / Strong shaking (MMI VI) / rattling, vibrating / 20-30 s
Haveluloto (Tonga, 215 km SW of epicenter) : Around 20 sec. no significant local damage. (reported through EMSC)
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Aftershocks of the 6.4 quake 42 km northeast of Pangai, Ha'apai, Tonga, 1 October 01:13 UTC

More info
Recorded aftershocks, latest first (6 quakes):
  • 20 Oct 2020 18:57 UTC
    | M 5.0 |
    35 km (21.7 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 17 Oct 2020 05:19 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    91 km (56 mi) distance
    | USGS | Details
  • 09 Oct 2020 17:01 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    49 km (30 mi) distance
    | USGS | Details
  • 05 Oct 2020 01:10 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 04 Oct 2020 23:20 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    |
    81 km (51 mi) distance
    | GFZ | Details
  • 02 Oct 2020 17:12 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    20 km (12 mi) distance
    | USGS | Details

Earlier earthquakes in the same area since 1900

Strong mag. 6.4 earthquake - 42 km northeast of Pangai, Ha'apai, Tonga, on Thursday, 1 October 2020 at 01:13 (GMT)
    Hint: Click on Date/Time to show latest first
  • Date / time UTC
    | Mag |
    Profondità
    |
    Age
    |
    Distanza
    | Details
  • 19 Aug 2018 00:19
    | 8.1 |
    566km / 352mi
    |
    2 anni fa
    |
    473km / 294mi
    | Fiji Islands Region
  • 29 Sep 2009 17:48
    | 8.1 |
    18km / 11.2mi
    |
    11 anni fa
    |
    497km / 309mi
    | Samoa Islands Region
  • 30 Apr 1919 07:17
    | 8.1 |
    25km / 16mi
    |
    102 anni fa
    |
    211km / 131mi
    | Tonga Region
  • 03 May 2006 15:26
    | 8.0 |
    55km / 34mi
    |
    15 anni fa
    |
    73km / 45mi
    | Tonga
  • 26 Jun 1917 05:49
    | 8.0 |
    15km / 9.3mi
    |
    104 anni fa
    |
    536km / 333mi
    | Samoa Islands Region
  • 06 Sep 2018 15:49
    | 7.8 |
    640km / 398mi
    |
    2 anni fa
    |
    710km / 441mi
    | Fiji Islands
  • 09 Dec 2007 07:28
    | 7.8 |
    153km / 95mi
    |
    13 anni fa
    |
    800km / 497mi
    | South of the Fiji Islands (New Zealand)
  • 14 Oct 1997 09:53
    | 7.8 |
    167km / 104mi
    |
    23 anni fa
    |
    399km / 248mi
    | South of the Fiji Islands (Tonga)
  • 26 Dec 1975 15:56
    | 7.8 |
    33km / 21mi
    |
    45 anni fa
    |
    402km / 250mi
    | Samoa Islands Region
  • 11 Oct 1975 14:35
    | 7.8 |
    9km / 5.6mi
    |
    45 anni fa
    |
    605km / 376mi
    | South of Tonga
  • Show all

Map of earlier quakes

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