Earthquakes in Guam — May 2026
3 earthquakes were recorded in Guam during May 2026, an average of 0.1 per day.
3 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 60 km.
The month's largest event in Guam was a magnitude 4.8 earthquake near Yigo Village, Guam on 11 May 2026 at 20:18 UTC. A magnitude 4.8 earthquake radiates roughly 239 tons of TNT equivalent in seismic energy.
That is close to the Guam monthly average of 4 events over the period we cover, and down from the 4 recorded the previous month.
67% of events here are shallow (under 70 km), 33% intermediate (70–300 km) and 0% deep-focus (over 300 km). A substantial share of intermediate-depth events points to a subducting slab beneath the region rather than purely crustal faulting.
By band, the catalogue holds 3 in the magnitude 4 range.
The month's largest events were M4.8 near Yigo Village, Guam on 11 May at 10 km; M4.7 near Merizo Village, Guam on 28 May at 36 km; M4.4 near Tamuning-Tumon-Harmon Village, Guam on 26 May at 134 km.
That is 24% below the 4 events Guam averages per month across the 18 months on record.
Largest earthquakes in Guam, May 2026
3 events listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 4.8 | Yigo Village, Guam | 10.0 | Guam | View details View | |
| 4.7 | Merizo Village, Guam | 36.1 | Guam | View details View | |
| 4.4 | Tamuning-Tumon-Harmon Village, Guam | 134.4 | Guam | View details View |
Frequently asked questions
How many earthquakes hit Guam in May 2026?
3 earthquakes were recorded in Guam during May 2026, of which 3 were magnitude 4 or above.
What was the biggest earthquake in Guam in May 2026?
A magnitude 4.8 event near Yigo Village, Guam on 11 May 2026.
Other months in Guam
Magnitudes for May 2026 reflect the current USGS review status and may have been revised since first publication. See our guides on the magnitude scale, focal depth and why earthquakes cluster.