Written by on . Last updated July 18th, 2024.

In the South Pacific Ocean 146 kilometer from Nuku‘alofa, Tonga, a shallow and significant M5.1 earthquake occurred in the evening of Tuesday June 25th, 2024.

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Earthquake Summary

This earthquake hit under water in the South Pacific Ocean, 140 kilometers (87 mi) off the coast of Tonga, 146 kilometer east of Nuku‘alofa in Tongatapu. The center of this earthquake had a very shallow depth of 10 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time: Jun 25, 2024 07:45PM (Tongatapu Time)
- Jun 25, 2024 06:45 Universal Time.
Location: 146 km east of Nuku‘alofa, Tongatapu, Tonga.
Coordinates 20°53'57"S 173°48'58"W.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 5.1
Detected by 99 stations. Maximum Error Range ±0.057 .
Depth: 10 km (6 mi)
A very shallow depth.
Tsunami Risk: Low tsunami risk
Earthquakes under MAG-6.5 do not usually cause tsunami's.
Always stay cautious - More info here.

Nearby towns and cities

This earthquake may have been felt in Tonga . Located 146 kilometer (91 mi) east of the epicenter of this earthquake, Nuku‘alofa (Tongatapu, Tonga) is the nearest significant population center.

Overview of nearby places

Distance Place
146 km (91 mi)
W from epicenter
Nuku‘alofa

Tongatapu, Tonga.
Cities and Towns around the epicenter of this earthquake.

Shaking reported by 1 person

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 1 person has reported shaking in one place in Tonga.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

  • Ohonua, Eua, Tonga: 1 person.

Risk of aftershocks?

This earthquake did not have any significant foreshocks nor aftershocks occurring within 100km (62 mi) of its epicenter.

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since June 17th, 2024, when a 5.5 magnitude earthquake hit 232 km (144 mi) further north-northeast. An even stronger magnitude 7.3 earthquake struck on November 11th, 2022.

In total, 215 earthquakes with a magnitude of 5.1 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 17 days.

Low tsunami risk

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor Under Sea? MAG-6.5 or stronger? Shallow depth?
Explanation Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami. Under MAG 6.5: Very unlikely to cause a tsunami.
MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes.
MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.
Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake This earthquake appears to have struck under the sea. Not this earthquake.
This earthquake had a magnitude of 5.1. Earthquakes of this strength are unlikely to trigger a tsunami.
This earthquake occurred at a depth of of 10 km (6 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 18/07/24 01:58 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.

  1. US Geographic Society (USGS): Earthquake us6000n82d
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20240625_0000072
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

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