Moderate mag. 5.0 earthquake - South Pacific Ocean, Tonga, 275 km southwest of Apia, Tuamasaga, Samoa, on 26 Jul 7:48 am (GMT +13) -

Moderate mag. 5.0 earthquake - South Pacific Ocean, Tonga, 275 km southwest of Apia, Tuamasaga, Samoa, on 26 Jul 7:48 am (GMT +13)

Moderate magnitude 5.0 earthquake at 80 km depth

25 Jul 19:16 UTC: First to report: EMSC after 28 minutes.
25 Jul 19:29: Magnitude recalculated from 5.1 to 4.8. Hypocenter depth recalculated from 80.0 to 60.0 km (from 50 to 37 mi). Epicenter location corrected by 6.8 km (4.2 mi) towards ESE.
... [show all] ...
25 Jul 20:33: Hypocenter depth recalculated from 73.0 to 80.0 km (from 45 to 50 mi). Epicenter location corrected by 8.4 km (5.2 mi) towards NNE.
Update Sun, 25 Jul 2021, 19:21
Significant magnitude 5.1 quake hits 105 km northwest of Hihifo, Tonga in the morning
5.1 quake 26 Jul 7:48 am (GMT +13)
5.1 quake 26 Jul 7:48 am (GMT +13)
Tonga was shaken near Hihifo, Niuas, by an earthquake of magnitude 5.1 33 minutes ago, the European-Mediterranean Seismological Centre (EMSC) reported.
The quake hit at an intermediate depth of 80 km beneath the epicenter near Hihifo, Niuas, Tonga, in the morning on Monday 26 July 2021 at 7:48 am local time. Magnitude and other quake parameters can still change in the coming hours as the agency continues to process seismic data.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Hihifo (pop. 820) located 105 km from the epicenter.
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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Earthquake data

Date & time: Jul 25, 2021 18:48:23 UTC -
Local time at epicenter: 26 Jul 7:48 am (GMT +13)
Magnitude: 5
Depth: 80.0 km
Epicenter latitude / longitude: 15.04°S / 173.99°W (South Pacific Ocean, Tonga)
Antipode: 15.04°N / 6.01°E
Nearest volcano: Tafu-Maka (37 km / 23 mi)
Nearby towns and cities:
104 km (65 mi) NNW of Hihifo (pop: 815) --> See nearby quakes!
223 km (139 mi) SW of Asau (Samoa) (pop: 6,640) --> See nearby quakes!
246 km (153 mi) SW of Safotu (Samoa) (pop: 1,210) --> See nearby quakes!
250 km (155 mi) WSW of Mulifanua (Samoa) (pop: 4,510) --> See nearby quakes!
260 km (161 mi) WSW of Fasito‘outa (Samoa) (pop: 2,100) --> See nearby quakes!
275 km (171 mi) WSW of Apia (Samoa) (pop: 40,400) --> See nearby quakes!
306 km (190 mi) SE of Mata-Utu (Hahake, Wallis & Futuna) (pop: 1,200) --> See nearby quakes!
360 km (224 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
364 km (226 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
690 km (429 mi) N of Nuku'alofa (pop: 22,400) --> See nearby quakes!
309 km (192 mi) SE of Wallis Island (pop: 10,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds 27.5°C (81 F), humidity: 76%, wind: 6 m/s (11 kts) from E
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 2 x 1012 joules (554 megawatt hours, equivalent to 477 tons of TNT) 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.
4.895 km95 Km N of Hihifo, TongaUSGS
5.074 kmTonga IslandsGeoAu
4.9111 kmTonga IslandsGFZ
5.110 kmTonga: Near NouméaRENASS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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More info

Recorded aftershocks, latest first (1 quake)

  • 14 Sep 2021 10:28 UTC
    | M 5.2 |
    113 km (70.2 mi) depth
    10 km (6 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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