EveryQuake
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Earthquakes in Southern Ostrobothnia

1,143 earthquakes catalogued in and around Southern Ostrobothnia between 1998 and 2025. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
No records in the last 30 days.
1,143
recorded earthquakes
M3.6
largest
1998–2025
record span
1.24
mean magnitude
967
epicentre inside the border

By year

Stacked by magnitude; one column per year.

01352711998: 2 (M<3)19982000: 1 (M3–4)2000200220042005: 1 (M<3)20062007: 222 (M<3)2008: 271 (M<3)20082009: 226 (M<3)2010: 213 (M<3)20102011: 188 (M<3)2012201420162018202020222023: 1 (M3–4)2024: 17 (M<3)20242025: 1 (M<3)
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
3.624.08.2023 11:3112.3 km111 km
3.013.11.2000 15:080 km93 km
2.109.11.2010 11:120 km23 km
2.004.01.2011 13:380 km84 km
2.026.07.2010 09:060 km7 km
1.901.08.2011 14:570 km66 km
1.909.07.2010 09:280 km99 km
1.905.06.2009 14:190 km45 km
1.907.08.2007 10:310 km79 km
1.902.07.2009 14:590 km9 km
1.803.12.2025 19:270 km107 km
1.805.07.2011 16:070 km90 km
1.830.06.2011 07:100 km77 km
1.819.10.2007 05:350 km86 km
1.818.05.2011 11:490 km80 km

Latest earthquakes

MagnitudeDateDepthDistance
1.803.12.2025 19:270 km107 km
1.425.11.2024 09:1110 km33 km
1.218.11.2024 14:2710 km81 km
1.807.11.2024 06:2610 km88 km
1.206.11.2024 11:2210 km9 km
1.306.11.2024 09:4010 km4 km
1.305.11.2024 13:3710 km90 km
1.431.10.2024 13:0410 km73 km
1.229.10.2024 09:1010 km40 km
1.228.10.2024 09:0710 km98 km
1.225.10.2024 07:1310 km81 km
1.424.10.2024 07:2410 km74 km
1.423.10.2024 10:5710 km89 km
1.616.10.2024 10:5910 km82 km
1.211.10.2024 14:1910 km87 km
1.210.10.2024 08:2110 km40 km
1.609.10.2024 07:0710 km95 km
1.209.10.2024 06:3810 km82 km
3.624.08.2023 11:3112.3 km111 km
1.530.12.2011 08:250 km26 km
1.029.12.2011 07:280 km65 km
1.423.12.2011 09:230 km53 km
1.222.12.2011 13:030 km78 km
1.221.12.2011 09:530 km39 km
0.920.12.2011 12:560 km37 km
1.519.12.2011 13:270 km32 km
1.516.12.2011 10:380 km84 km
1.315.12.2011 14:140 km31 km
1.115.12.2011 12:030 km7 km
1.715.12.2011 09:410 km82 km
1.514.12.2011 13:080 km38 km
1.402.12.2011 08:570 km21 km
1.701.12.2011 11:280 km67 km
1.110.11.2011 07:400 km93 km
0.809.11.2011 13:110 km46 km
1.207.11.2011 12:520 km116 km
1.207.11.2011 12:470 km113 km
0.804.11.2011 08:460 km37 km
1.501.11.2011 14:380 km25 km
0.827.10.2011 08:090 km114 km
1.627.10.2011 06:080 km36 km
1.220.10.2011 11:510 km8 km
0.820.10.2011 07:000 km32 km
1.219.10.2011 12:550 km11 km
1.718.10.2011 12:050 km94 km
1.414.10.2011 07:420 km36 km
1.012.10.2011 12:000 km91 km
1.407.10.2011 12:350 km21 km
0.905.10.2011 06:140 km50 km
1.704.10.2011 07:080 km79 km
1.530.09.2011 09:310 km34 km
1.429.09.2011 10:430 km7 km
1.728.09.2011 06:510 km44 km
1.522.09.2011 12:210 km74 km
1.422.09.2011 11:040 km86 km
1.421.09.2011 16:410 km8 km
1.221.09.2011 10:480 km7 km
1.021.09.2011 06:040 km8 km
1.520.09.2011 17:350 km78 km
1.220.09.2011 05:000 km6 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.