EveryQuake

Earthquakes in Guam

801 earthquakes catalogued in and around Guam between 1909 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
5.1
Latest earthquake · depth 10 km
21.07.2026 11:09 UTC · from centre 85 km
801
recorded earthquakes
M7.7
largest
1909–2026
record span
4.51
mean magnitude
70
epicentre inside the border

By year

Stacked by magnitude; one column per year.

016321909: 1 (M5+)19091912: 1 (M5+)19181924: 1 (M5+)19271932: 1 (M5+)1936: 3 (M5+)19361937: 1 (M5+)1945195419631964: 5 (M5+)1965: 3 (M4–5)1965: 4 (M5+)1966: 2 (M4–5)1966: 1 (M5+)1967: 1 (M4–5)1967: 2 (M5+)1968: 4 (M4–5)1968: 3 (M5+)1969: 4 (M4–5)1969: 3 (M5+)1970: 4 (M4–5)1970: 4 (M5+)1971: 1 (M4–5)1971: 3 (M5+)1972: 1 (M4–5)1972: 2 (M5+)19721973: 6 (M4–5)1973: 4 (M5+)1974: 3 (M4–5)1974: 4 (M5+)1975: 2 (M4–5)1975: 2 (M5+)1976: 3 (M4–5)1976: 2 (M5+)1977: 6 (M5+)1978: 4 (M4–5)1978: 3 (M5+)1979: 4 (M4–5)1979: 3 (M5+)1980: 1 (M5+)1981: 1 (M5+)19811982: 4 (M4–5)1982: 3 (M5+)1983: 2 (M4–5)1983: 4 (M5+)1984: 3 (M4–5)1984: 3 (M5+)1985: 6 (M4–5)1985: 2 (M5+)1986: 3 (M4–5)1986: 2 (M5+)1987: 2 (M4–5)1987: 4 (M5+)1988: 3 (M4–5)1989: 4 (M4–5)1989: 3 (M5+)1990: 9 (M4–5)1990: 5 (M5+)19901991: 4 (M4–5)1991: 4 (M5+)1992: 4 (M4–5)1993: 21 (M4–5)1993: 9 (M5+)1994: 3 (M4–5)1994: 5 (M5+)1995: 1 (M3–4)1995: 11 (M4–5)1995: 3 (M5+)1996: 8 (M4–5)1996: 3 (M5+)1997: 2 (M3–4)1997: 6 (M4–5)1997: 2 (M5+)1998: 10 (M4–5)1998: 2 (M5+)1999: 4 (M4–5)1999: 5 (M5+)19992000: 1 (M3–4)2000: 12 (M4–5)2000: 5 (M5+)2001: 6 (M4–5)2001: 2 (M5+)2002: 1 (M3–4)2002: 12 (M4–5)2002: 5 (M5+)2003: 4 (M<3)2003: 1 (M3–4)2003: 11 (M4–5)2003: 2 (M5+)2004: 2 (M<3)2004: 1 (M3–4)2004: 9 (M4–5)2004: 1 (M5+)2005: 2 (M3–4)2005: 18 (M4–5)2005: 2 (M5+)2006: 2 (M<3)2006: 1 (M3–4)2006: 19 (M4–5)2006: 2 (M5+)2007: 2 (M<3)2007: 1 (M3–4)2007: 13 (M4–5)2007: 2 (M5+)2008: 2 (M3–4)2008: 13 (M4–5)2008: 5 (M5+)20082009: 12 (M4–5)2009: 3 (M5+)2010: 1 (M3–4)2010: 5 (M4–5)2010: 5 (M5+)2011: 6 (M4–5)2011: 2 (M5+)2012: 5 (M4–5)2012: 1 (M5+)2013: 3 (M3–4)2013: 12 (M4–5)2014: 5 (M3–4)2014: 20 (M4–5)2014: 3 (M5+)2015: 24 (M4–5)2015: 2 (M5+)2016: 1 (M3–4)2016: 23 (M4–5)2017: 1 (M3–4)2017: 20 (M4–5)2017: 3 (M5+)20172018: 1 (M3–4)2018: 17 (M4–5)2019: 2 (M3–4)2019: 19 (M4–5)2019: 2 (M5+)2020: 2 (M3–4)2020: 23 (M4–5)2020: 5 (M5+)2021: 1 (M3–4)2021: 18 (M4–5)2021: 1 (M5+)2022: 1 (M3–4)2022: 24 (M4–5)2022: 2 (M5+)2023: 4 (M3–4)2023: 19 (M4–5)2023: 1 (M5+)2024: 2 (M3–4)2024: 24 (M4–5)2024: 1 (M5+)2025: 5 (M3–4)2025: 21 (M4–5)2025: 6 (M5+)2026: 2 (M3–4)2026: 8 (M4–5)2026: 2 (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
7.708.08.1993 08:3451.3 km45 km
7.409.12.1909 23:2850 km163 km
7.026.04.2002 16:0676.5 km44 km
7.026.10.1912 09:00130 km145 km
7.012.10.2001 15:0248.8 km76 km
6.817.09.2014 06:14142.2 km55 km
6.701.11.1975 01:17111.6 km44 km
6.529.10.1936 18:3975 km67 km
6.523.04.1997 19:44106.7 km72 km
6.302.02.2005 02:30161.7 km66 km
6.230.01.1924 04:4735 km99 km
6.213.12.1936 21:3035 km51 km
6.226.02.2000 08:11135.4 km43 km
6.113.02.1983 06:35109.1 km52 km
6.122.09.1984 18:10102.4 km95 km

Latest earthquakes

MagnitudeDateDepthDistance
5.121.07.2026 11:0910 km85 km
4.229.05.2026 12:2795.3 km6 km
3.926.05.2026 11:10127.7 km22 km
4.024.05.2026 15:1761 km44 km
4.326.04.2026 22:4375.5 km37 km
4.213.04.2026 03:11151.8 km44 km
4.109.04.2026 18:06112.2 km39 km
4.121.03.2026 11:23144.8 km38 km
3.927.02.2026 03:5790.5 km32 km
4.315.02.2026 02:20134.4 km49 km
5.512.02.2026 10:30139.6 km55 km
4.101.02.2026 02:51155.8 km26 km
4.127.12.2025 21:3559.5 km41 km
4.524.12.2025 13:3347.6 km40 km
4.019.12.2025 20:56122.1 km40 km
3.906.12.2025 01:1664.2 km32 km
5.409.11.2025 22:53104.6 km35 km
5.205.11.2025 03:03110.5 km21 km
3.706.10.2025 03:06141.1 km32 km
4.405.10.2025 14:0284 km17 km
4.328.09.2025 15:06159.5 km38 km
4.424.09.2025 12:20125.8 km41 km
4.203.09.2025 22:59151.2 km44 km
4.502.09.2025 05:1252.4 km41 km
3.901.09.2025 18:39156.1 km13 km
4.606.08.2025 16:56120.7 km47 km
4.815.07.2025 22:1864 km38 km
5.423.06.2025 19:14146.2 km40 km
4.220.06.2025 13:03151.6 km45 km
5.728.05.2025 13:3428 km80 km
5.127.05.2025 02:570 km83 km
4.324.05.2025 19:39122.1 km19 km
4.120.05.2025 17:35162.7 km37 km
4.225.04.2025 14:34154.9 km43 km
3.914.04.2025 17:43129.4 km34 km
4.512.04.2025 18:29117.8 km31 km
4.107.03.2025 03:22114 km51 km
3.912.02.2025 23:25123.5 km36 km
4.510.02.2025 11:40116.4 km54 km
4.227.01.2025 20:0558.6 km43 km
4.227.01.2025 06:50136.1 km23 km
5.621.01.2025 05:47130 km47 km
4.116.01.2025 19:3751.9 km46 km
4.811.01.2025 07:5199.2 km44 km
4.525.12.2024 07:20126.8 km21 km
4.619.12.2024 19:31108.4 km29 km
3.810.12.2024 01:1698.4 km15 km
4.218.11.2024 06:43141.6 km34 km
4.516.11.2024 18:1951.7 km41 km
4.531.10.2024 15:48123.5 km53 km
4.222.09.2024 17:2560.8 km51 km
5.514.09.2024 11:4110 km74 km
4.413.09.2024 22:40137.3 km50 km
4.129.07.2024 15:14150 km45 km
3.913.07.2024 13:35135 km34 km
4.422.06.2024 14:49150 km47 km
4.311.06.2024 08:21150 km43 km
4.405.06.2024 02:29125 km40 km
4.204.06.2024 02:34137.7 km24 km
4.021.05.2024 06:35127.4 km41 km

Regions

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.