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

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

Strong mag. 6.4 earthquake  - 41 Km NE of Pangai, Tonga on Thursday, 1 October 2020
1 Oct 01:21 UTC: First to report: USGS after 8 minutes.
1 Oct 01:24: Epicenter location corrected by 5 km (3.1 mi) towards NE.
... [show all] ...
2 Oct 02:20: Hypocenter depth recalculated from 35.0 to 28.0 km (from 22 to 17.4 mi). Epicenter location corrected by 15.6 km (9.7 mi) towards ESE.
Date & time: Thursday, 1 October 2020 01:13 UTC
Magnitude: 6.4
Depth: 28.0 km
Epicenter latitude / longitude: 19.5355°S / 174.0834°W (Tonga)
Nearest volcano: Late (113 km / 70 mi)
Nearby towns and cities:
42 km (26 mi) NE of Pangai (pop: 1,700)
99 km (62 mi) S of Neiafu (pop: 4,300)
Weather at epicenter at time of quake:
Broken Clouds 28°C (82 F), humidity: 83%, wind: 4 m/s (7 kts) from N
Primary data source: USGS
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Thu, 1 Oct 01:13 UTCM 6.4 / 28 km41 Km NE of Pangai, TongaUSGS
Thu, 1 Oct 01:13 UTCM 6.5 / 49 km39 Km N of Pangai, TongaGFZ
Thu, 1 Oct 01:13 UTCM 6.5 / 10 km6.4 TongaEMSC
Thu, 1 Oct 01:13 UTCM 6.6 / 41.9 km32 Km NNE of Pangai, TongaGeoAu
Thu, 1 Oct 01:13 UTCM 6.5 / 19.5 kmTonga Islands [Sea: Tonga]INGV
Thu, 1 Oct 01:13 UTCM 6.5 / 109 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.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
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)

Aftershocks of the 6.4 quake: 41 Km NE of Pangai, Tonga, 1 Oct 2020 01:13

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

Map of earlier quakes

 

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