EveryQuake

Earthquakes in Porto

154 earthquakes catalogued in and around Porto between 1988 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
No records in the last 30 days.
154
recorded earthquakes
M4.0
largest
1988–2026
record span
1.94
mean magnitude
60
epicentre inside the border

By year

Stacked by magnitude; one column per year.

014281988: 1 (M4–5)198819911993: 1 (M<3)1993: 3 (M3–4)1994: 4 (M3–4)199419971998: 2 (M<3)1998: 1 (M3–4)2000: 1 (M<3)20002002: 2 (M<3)2003: 17 (M<3)20032004: 8 (M<3)2005: 2 (M<3)2006: 7 (M<3)2006: 1 (M3–4)20062007: 12 (M<3)2008: 2 (M<3)2009: 11 (M<3)2009: 1 (M3–4)20092010: 20 (M<3)2011: 27 (M<3)2011: 1 (M3–4)2012: 1 (M<3)20122013: 1 (M<3)2013: 1 (M3–4)2014: 2 (M<3)2015: 1 (M<3)2015: 1 (M3–4)20152016: 2 (M<3)2016: 1 (M3–4)2017: 1 (M3–4)2018: 1 (M<3)20182020: 2 (M<3)2021: 3 (M<3)20212023: 2 (M<3)2023: 1 (M3–4)2024: 3 (M<3)20242025: 5 (M<3)2026: 2 (M<3)2026
M<3M3–4M4–5M5+

Read this chart carefully. Rising columns do not mean earthquakes are becoming more frequent. The monitoring network improved over time: the smallest detectable earthquake in Türkiye was about M5.0 in 1966 and is M1.5 today. Earlier years look quiet because small events were not heard, not because they did not happen.

Largest earthquakes

Inclusion rule: the radius widens with magnitude (15 km up to M4, 150 km at M7 and above). This is not a measure of felt shaking or intensity.

MagnitudeDateDepthDistance
4.031.01.1988 15:0910 km15 km
3.806.06.2017 16:0316 km24 km
3.805.09.2023 18:2010 km37 km
3.703.08.1998 09:2210 km42 km
3.624.11.1993 20:3710 km50 km
3.522.06.1993 05:1510 km53 km
3.528.06.2011 02:1515 km46 km
3.510.02.2016 09:3615 km46 km
3.420.10.1994 06:0110 km48 km
3.302.05.2015 01:4320.7 km32 km
3.213.02.2013 17:2215 km7 km
3.124.03.2009 09:5110 km14 km
3.129.08.1994 03:3010 km42 km
3.103.09.1993 08:3410 km40 km
3.126.05.1994 14:135 km18 km

Latest earthquakes

MagnitudeDateDepthDistance
2.104.07.2026 20:101.4 km9 km
2.114.01.2026 23:213.6 km9 km
1.717.09.2025 11:300 km40 km
2.024.06.2025 15:0820.7 km33 km
1.528.04.2025 11:494.9 km45 km
1.626.03.2025 01:1811.6 km56 km
1.710.01.2025 23:100 km36 km
1.720.11.2024 11:520.8 km38 km
1.702.11.2024 18:300.4 km34 km
2.113.02.2024 21:499 km41 km
3.805.09.2023 18:2010 km37 km
1.621.08.2023 00:427 km43 km
1.931.07.2023 15:081.2 km34 km
2.215.08.2021 03:4717 km9 km
1.619.04.2021 03:032 km36 km
2.012.03.2021 17:1610 km38 km
2.104.08.2020 02:464 km42 km
2.611.02.2020 07:2215 km31 km
2.023.04.2018 04:461 km43 km
3.806.06.2017 16:0316 km24 km
2.129.12.2016 07:001 km48 km
2.104.06.2016 18:417 km21 km
3.510.02.2016 09:3615 km46 km
2.029.11.2015 06:257 km41 km
3.302.05.2015 01:4320.7 km32 km
2.121.05.2014 01:2511 km11 km
2.416.05.2014 04:2610 km43 km
2.528.02.2013 06:2412 km52 km
3.213.02.2013 17:2215 km7 km
2.226.09.2012 10:5914 km36 km
1.007.12.2011 15:330 km60 km
0.915.11.2011 17:030 km35 km
2.130.10.2011 08:085 km27 km
0.915.10.2011 23:292 km22 km
1.308.10.2011 11:410 km41 km
1.307.10.2011 09:400 km33 km
2.205.10.2011 08:4115 km26 km
1.512.09.2011 11:342 km22 km
2.210.09.2011 19:048 km9 km
1.217.08.2011 13:490 km35 km
1.225.07.2011 11:170 km33 km
0.719.07.2011 07:470 km32 km
2.307.07.2011 03:2719.1 km25 km
3.528.06.2011 02:1515 km46 km
2.627.06.2011 04:4419.3 km47 km
1.106.06.2011 09:280 km40 km
1.728.05.2011 03:222 km39 km
2.129.04.2011 15:172 km22 km
1.220.04.2011 11:430 km39 km
1.011.04.2011 13:390 km34 km
0.508.04.2011 11:050 km34 km
1.012.03.2011 14:350 km52 km
2.706.03.2011 01:0615 km34 km
1.705.03.2011 21:180 km38 km
1.525.01.2011 16:440 km38 km
0.620.01.2011 12:060 km33 km
2.905.01.2011 07:3319.7 km11 km
1.802.01.2011 13:5610 km33 km
2.624.12.2010 15:5819.1 km21 km
1.303.12.2010 12:550 km39 km

Method and sources

What this page counts
An earthquake appears here when its epicentre is within a magnitude-dependent distance of this place's border: 15 km up to M4, 30 km to M5, 60 km to M6, 100 km to M7, and 150 km at M7 and above. The rule exists because a large earthquake concerns neighbouring provinces too — the 17 August 1999 epicentre was in the Gulf of İzmit, on no province's land at all.
Location precision
Epicentre uncertainty is typically 1–10 km, and larger for older records. That is why this site breaks data down to districts but not to neighbourhoods or villages — the data does not support that distinction.
Magnitude scales
The catalogues use more than twelve magnitude scales (Mw, ML, mb, Md…) and they are not equivalent. Values are shown on the scale the source reported; they are not converted.
Deduplication
The same earthquake is published by several catalogues. Records within 20 seconds and 100 km whose magnitudes differ by no more than 1.2 are treated as one event; the primary record is chosen by catalogue priority.
Updates
Recent earthquakes are fetched from four sources every five minutes. The historical archive is rebuilt infrequently.
Sources
USGS ComCat · ISC Bulletin · AFAD · Kandilli / KOERI · EMSC/CSEM
Reporting an error
If you spot a wrong record, write to us; we verify against the source and correct it.