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M3.4 Earthquake near AZORES ISLANDS, PORTUGAL (Portugal)

UTC time: 2025-09-20 18:27:59 UTC Local time: —

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M3.4 Earthquake near AZORES ISLANDS, PORTUGAL (Portugal) · 2025-09-20 — Map showing the location of the epicenter
M3.4 Earthquake near AZORES ISLANDS, PORTUGAL (Portugal) · 2025-09-20 — Map showing the location of the epicenter

About this earthquake

On September 20, 2025 at 18:27 UTC, a magnitude M3.4 earthquake occurred near AZORES ISLANDS, PORTUGAL (Portugal). With a focal depth of about 3 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks.

Details

ID
70cf01bdb3ec6b5976226d9a1dd701bfeac9077f
Magnitude
M3.4
Depth
2.7 km
UTC time
2025-09-20 18:27:59 UTC
Local time
—
Country
Portugal
City
Altares
Source
emsc
Coordinates
38.74000, -27.31800
Temperature
20.6°C

Depth profile

Depth profile Depth: 2.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.7 km
Shallow
2.7 km
2.7 km — shallower than the regional average (6.1 km)
Regional average: 6.1 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Felt reports

20felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Sep 20, 2025, 8:02 PM UTC · Last checked: Sep 6, 2026, 12:16 PM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Terceira
    Distance: 1 km ·Stratovolcano(es) ·Elevation: 1'023 m ·Last eruption: 2000 ·Portugal
  • Graciosa
    Distance: 64 km ·Stratovolcano ·Elevation: 402 m ·Last eruption: -1950 ·Portugal
  • Sao Jorge
    Distance: 67 km ·Fissure vent ·Elevation: 1'053 m ·Last eruption: 1902 ·Portugal
  • Don Joao de Castro Bank
    Distance: 82 km ·Shield ·Elevation: -13 m ·Last eruption: 1720 ·Portugal
  • Pico
    Distance: 99 km ·Stratovolcano ·Elevation: 2'351 m ·Last eruption: 1720 ·Portugal
  • Fayal
    Distance: 122 km ·Stratovolcano ·Elevation: 1'041 m ·Last eruption: 1958 ·Portugal

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Lajes AirportPortugal · TER · LPLA
    19.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-06

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Portugal

Context for this earthquake

06 Sep 2025 – 06 Sep 2026 · M ≥ 3.0 · 30 Catalogue entries

Of 29 other entries for this area and period, 10 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Portugal

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Country statistics · Portugal

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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