In the evening of Tuesday February 18th, 2025, a shallow and significant Magnitude 5.0 earthquake hit in the South Pacific Ocean 122 kilometer from Nuku‘alofa, Tonga.
Felt the earthquake? Share this article: 
Earthquake Summary
This earthquake hit under water in the South Pacific Ocean, 113 kilometers (70 mi) off the coast of Tonga, 122 kilometer east-southeast 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: | Feb 18, 2025 06:58PM (Tongatapu Time) - Feb 18, 2025 05:58 Universal Time. |
|---|---|
| Location: | 122 km ESE of Nuku‘alofa, Tongatapu, Tonga. Coordinates 21°25'4"S 174°3'48"W. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.0 Detected by 41 stations. Maximum Error Range ±0.088 . |
| 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 122 kilometer (76 mi) east-southeast of the epicenter of this earthquake, Nuku‘alofa (Tongatapu, Tonga) is the nearest significant population center.
Overview of nearby places
| Distance | Place |
|---|---|
| 122 km (76 mi) WNW from epicenter |
Nuku‘alofa Tongatapu, Tonga. |
Risk of aftershocks?
We monitor for foreshocks or aftershocks that have a magnitude of 2.5+ and occur within 100km (62 mi) of the epicenter of this earthquake. So far no such earthquakes have been detected.
The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.
In only six percent of cases, significant earthquakes are followed by a larger main shock, making the current earthquake a foreshock. While the chance of this happening is not so large, it is adviced to maintain cautiousness in the hours and days following a major earthquake.
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 February 11th, 2025, when a 5 magnitude earthquake hit 212 km (132 mi) further southwest. An even stronger magnitude 6.9 earthquake struck on August 25th, 2024.
In total, 409 earthquakes with a magnitude of 5 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 9 days.
Low tsunami risk
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. 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 15/03/25 02:28 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.
- US Geographic Society (USGS): Earthquake us7000pefw
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20250218_0000081
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
Share this article:
