On Monday Afternoon a Shallow M4.8 Earthquake struck near Lisbon in Portugal.

Written by Earthquakelist.org on February 17th, 2025. Last updated February 20th, 2025.

Under land 15 kilometer from Lisbon in Portugal, a shallow Magnitude 4.8 earthquake occurred in the early afternoon of Monday February 17th, 2025. The earthquake struck near a very densely populated region. Another country near the epicenter is Spain.

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Earthquake Summary

The earthquake struck on land in Portugal, 15 kilometer (9 mi) south-southwest of Lisbon. 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 17, 2025 13:24 (Lisbon Time) - Feb 17, 2025 13:24 Universal Time.
Location:	15 km SSW of Lisbon, Portugal. Coordinates 38°35'16"N 9°11'15"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 4.8 Detected by 98 stations. Maximum Error Range ±0.056 .
Depth:	10 km (6 mi) A very shallow depth.
Tsunami Risk:	Tsunami very unlikely While this was a shallow earthquake in a coastal area, it appears to have occurred under land (1 km from the sea) with a magnitude that is usually not strong enough to cause tsunami's. Always stay cautious - More info here.

Nearby towns and cities

2 countries can be found within 300km of the epicenter of this earthquake: Portugal and Spain .

Located 4 kilometer (2 mi) south of the epicenter of this earthquake, Charneca de Caparica (District of Setúbal, Portugal) is the nearest significant population center.

Major cities near this earthquake: Lisbon is located 15 km to the north-northeast. Amadora is located 19 km to the north-northwest. Queluz is located 20 km to the north-northwest.

The table below provides an overview of all places in proximity of today's earthquake.

Overview of nearby places

Shaking reported by 542 people in 3 countries

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 542 people have reported shaking in 92 places in 3 countries (Spain, Italy, Portugal).We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

• Lisbon, Lisboa e Vale do Tejo, Portugal: 149 people.
• Algés, Lisboa e Vale do Tejo, Portugal: 28 people.
• Almada, Lisboa e Vale do Tejo, Portugal: 21 people.
• Charneca de Caparica, Lisboa e Vale do Tejo, Portugal: 19 people.
• São Domingos de Rana, Lisboa e Vale do Tejo, Portugal: 17 people.
• Cascais, Lisboa e Vale do Tejo, Portugal: 16 people.
• Pontinha, Lisboa e Vale do Tejo, Portugal: 16 people.
• Sesimbra, Lisboa e Vale do Tejo, Portugal: 16 people.
• Olival Basto, Lisboa e Vale do Tejo, Portugal: 15 people.
• Amora, Lisboa e Vale do Tejo, Portugal: 13 people.

Aftershocks detected

After this earthquake struck, 1 smaller aftershock occurred. At a distance of 4 km (2.5 mi) south-southeast of this earthquake, an aftershock struck 21 hrs later. It measured a magnitude of 2.6

Overview of foreshocks and aftershocks

More earthquakes coming?

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.

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.

Earthquakes like this are common in the region

Earthquakes of this strength occur quite regularly in the region. This is the strongest earthquake to hit since August 26th, 2024, when a 5 magnitude earthquake hit 69 km (43 mi) further south-southwest. That was also the heaviest earthquake to hit the region in the past 10 years.

In total, 3 earthquakes with a magnitude of 4.8 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 3 years.

Tsunami very unlikely

While MAG-6.5+ earthquakes may cause tsunami's, it appears that the epicenter of this earthquake hit under land. In addition, the reported depth is deeper than 100km, making the risk of a tsunami even less likely. However always stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Sources

Last updated 20/02/25 13:18 (). 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.

1. US Geographic Society (USGS): Earthquake us7000pe8k
2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20250217_0000174
3. Geonames.org: World Cities Database
4. Google Maps: Static API
5. Earthquakelist.org: Historic Earthquakes Database

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