EveryQuake

Earthquakes in Alajuela

2,498 earthquakes catalogued in and around Alajuela between 1900 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
3.0
Latest earthquake · depth 8 km
04.08.2026 04:21 UTC · from centre 23 km
2,498
recorded earthquakes
M7.6
largest
1900–2026
record span
3.71
mean magnitude
1,460
epicentre inside the border

By year

Stacked by magnitude; one column per year.

01222441900: 1 (M5+)19001901: 1 (M5+)1905: 1 (M5+)1907: 2 (M5+)1909: 1 (M5+)1910: 1 (M5+)19101916: 2 (M5+)19201924: 6 (M5+)19301931: 2 (M5+)1935: 1 (M5+)1936: 2 (M5+)1939: 4 (M5+)1940: 3 (M5+)19401941: 2 (M5+)1943: 1 (M5+)1948: 1 (M5+)1949: 1 (M5+)1950: 3 (M5+)19501951: 1 (M5+)1952: 4 (M5+)1955: 1 (M5+)1956: 2 (M5+)19601964: 3 (M4–5)1965: 1 (M3–4)1965: 3 (M4–5)1966: 4 (M4–5)1966: 2 (M5+)1967: 3 (M4–5)1967: 2 (M5+)1968: 1 (M4–5)1969: 3 (M4–5)1970: 2 (M4–5)1970: 1 (M5+)19701971: 2 (M5+)1972: 1 (M4–5)1973: 5 (M4–5)1973: 2 (M5+)1974: 1 (M4–5)1974: 2 (M5+)1975: 3 (M4–5)1975: 1 (M5+)1976: 3 (M4–5)1976: 3 (M5+)1977: 4 (M4–5)1977: 1 (M5+)1978: 8 (M4–5)1978: 3 (M5+)1979: 3 (M4–5)1980: 3 (M4–5)1980: 2 (M5+)19801981: 4 (M4–5)1981: 1 (M5+)1982: 2 (M4–5)1982: 2 (M5+)1983: 3 (M4–5)1983: 2 (M5+)1984: 1 (M3–4)1984: 3 (M4–5)1985: 4 (M4–5)1985: 2 (M5+)1986: 4 (M4–5)1987: 19 (M4–5)1987: 1 (M5+)1988: 2 (M3–4)1988: 16 (M4–5)1988: 3 (M5+)1989: 1 (M<3)1989: 14 (M4–5)1989: 3 (M5+)1990: 1 (M3–4)1990: 37 (M4–5)1990: 8 (M5+)19901991: 6 (M4–5)1991: 7 (M5+)1992: 16 (M4–5)1992: 1 (M5+)1993: 18 (M4–5)1993: 1 (M5+)1994: 9 (M4–5)1994: 2 (M5+)1995: 6 (M4–5)1996: 3 (M3–4)1996: 3 (M4–5)1996: 3 (M5+)1997: 2 (M3–4)1997: 4 (M4–5)1998: 3 (M3–4)1998: 4 (M4–5)1998: 1 (M5+)1999: 2 (M3–4)1999: 6 (M4–5)1999: 2 (M5+)2000: 4 (M3–4)2000: 8 (M4–5)2000: 6 (M5+)20002001: 5 (M3–4)2001: 17 (M4–5)2001: 1 (M5+)2002: 1 (M<3)2002: 7 (M3–4)2002: 13 (M4–5)2002: 1 (M5+)2003: 13 (M4–5)2003: 3 (M5+)2004: 1 (M<3)2004: 1 (M3–4)2004: 18 (M4–5)2004: 2 (M5+)2005: 4 (M3–4)2005: 16 (M4–5)2005: 5 (M5+)2006: 2 (M<3)2006: 4 (M3–4)2006: 7 (M4–5)2006: 1 (M5+)2007: 2 (M3–4)2007: 13 (M4–5)2008: 3 (M<3)2008: 3 (M3–4)2008: 6 (M4–5)2008: 2 (M5+)2009: 1 (M3–4)2009: 20 (M4–5)2009: 1 (M5+)2010: 1 (M3–4)2010: 15 (M4–5)2010: 4 (M5+)20102011: 1 (M<3)2011: 10 (M3–4)2011: 13 (M4–5)2011: 7 (M5+)2012: 11 (M3–4)2012: 35 (M4–5)2012: 6 (M5+)2013: 2 (M3–4)2013: 20 (M4–5)2013: 1 (M5+)2014: 3 (M3–4)2014: 25 (M4–5)2014: 5 (M5+)2015: 2 (M3–4)2015: 17 (M4–5)2015: 1 (M5+)2016: 12 (M4–5)2016: 4 (M5+)2017: 1 (M<3)2017: 11 (M3–4)2017: 11 (M4–5)2017: 3 (M5+)2018: 1 (M<3)2018: 166 (M3–4)2018: 26 (M4–5)2018: 5 (M5+)2019: 1 (M<3)2019: 145 (M3–4)2019: 30 (M4–5)2019: 1 (M5+)2020: 166 (M3–4)2020: 26 (M4–5)2020: 2 (M5+)20202021: 12 (M<3)2021: 167 (M3–4)2021: 15 (M4–5)2021: 3 (M5+)2022: 21 (M<3)2022: 158 (M3–4)2022: 27 (M4–5)2023: 14 (M<3)2023: 171 (M3–4)2023: 45 (M4–5)2023: 2 (M5+)2024: 23 (M<3)2024: 192 (M3–4)2024: 25 (M4–5)2024: 4 (M5+)2025: 49 (M<3)2025: 84 (M3–4)2025: 26 (M4–5)2025: 3 (M5+)2026: 80 (M<3)2026: 32 (M3–4)2026: 14 (M4–5)2026: 3 (M5+)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
7.605.09.2012 14:4220.7 km80 km
7.622.04.1991 21:5615.7 km207 km
7.621.12.1939 20:5425 km66 km
7.505.10.1950 16:0997.9 km27 km
7.326.04.1916 02:2135 km54 km
7.325.03.1990 13:2221.2 km69 km
7.224.10.1956 14:4235 km236 km
7.221.06.1900 20:520 km91 km
7.224.04.1916 08:0235 km65 km
7.230.12.1907 05:260 km247 km
7.204.03.1924 10:0715 km121 km
7.108.10.1901 02:16196 km
7.116.08.1909 06:580 km101 km
7.115.10.1967 08:00168.8 km202 km
7.006.12.1941 21:2415 km216 km

Latest earthquakes

MagnitudeDateDepthDistance
3.004.08.2026 04:218 km23 km
3.002.08.2026 14:1037 km24 km
3.628.07.2026 13:1255 km26 km
2.627.07.2026 01:10103 km41 km
2.526.07.2026 20:1921 km83 km
2.525.07.2026 21:1215 km80 km
3.525.07.2026 05:284 km82 km
2.625.07.2026 03:0641 km85 km
2.723.07.2026 23:17300 km90 km
2.623.07.2026 16:1219 km59 km
3.223.07.2026 15:498 km56 km
3.023.07.2026 13:575 km81 km
2.522.07.2026 10:2617 km86 km
3.622.07.2026 04:1520 km83 km
2.621.07.2026 06:4519 km85 km
2.621.07.2026 02:19300 km35 km
2.720.07.2026 19:3515 km79 km
2.519.07.2026 10:4320 km64 km
3.118.07.2026 01:516 km54 km
2.517.07.2026 02:58153 km68 km
3.113.07.2026 10:2910 km46 km
2.810.07.2026 19:0535 km92 km
2.808.07.2026 12:537 km40 km
2.608.07.2026 09:22202 km82 km
5.207.07.2026 18:1123.7 km81 km
3.207.07.2026 12:513 km68 km
3.007.07.2026 04:1732 km77 km
4.203.07.2026 04:1856 km95 km
2.802.07.2026 20:1011 km52 km
2.802.07.2026 17:147 km50 km
2.529.06.2026 21:2821 km81 km
2.927.06.2026 18:0410 km27 km
2.926.06.2026 11:53300 km50 km
3.026.06.2026 01:454 km56 km
2.523.06.2026 21:372 km67 km
3.122.06.2026 07:4198 km87 km
2.822.06.2026 05:14192 km57 km
3.422.06.2026 03:1995 km87 km
2.519.06.2026 05:5544 km66 km
2.516.06.2026 21:2924 km78 km
3.016.06.2026 15:0099 km47 km
2.515.06.2026 14:4675 km68 km
3.115.06.2026 06:1798 km73 km
2.613.06.2026 14:3515 km83 km
2.712.06.2026 16:1099 km77 km
2.511.06.2026 04:5914 km49 km
5.010.06.2026 03:0165.5 km101 km
2.510.06.2026 02:13299 km98 km
3.010.06.2026 01:138 km50 km
4.109.06.2026 16:06164.1 km121 km
3.308.06.2026 01:14300 km67 km
3.308.06.2026 00:0767 km42 km
2.802.06.2026 20:2356 km75 km
2.526.05.2026 20:5820 km84 km
2.625.05.2026 00:42105 km60 km
2.523.05.2026 04:3297 km8 km
2.714.05.2026 15:3051 km95 km
4.414.05.2026 03:3610 km98 km
4.313.05.2026 16:2210 km75 km
2.713.05.2026 14:45157 km57 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.