Earthquakes in the Northern Mariana Islands — July 2026
4 earthquakes were recorded in the Northern Mariana Islands during July 2026, an average of 0.1 per day.
4 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 169 km.
The month's largest event in the Northern Mariana Islands was a magnitude 4.9 earthquake near Pagan region, Northern Mariana Islands on 23 July 2026 at 12:11 UTC. A magnitude 4.9 earthquake radiates roughly 338 tons of TNT equivalent in seismic energy.
That is close to the the Northern Mariana Islands monthly average of 3 events over the period we cover, and up from the 3 recorded the previous month.
25% of events here are shallow (under 70 km), 50% intermediate (70–300 km) and 25% deep-focus (over 300 km). That proportion of deep-focus events is the signature of a subduction zone: only a cold slab descending into the mantle stays brittle enough to rupture at those depths.
By band, the catalogue holds 4 in the magnitude 4 range.
The month's largest events were M4.9 near Pagan region, Northern Mariana Islands on 23 July at 321 km; M4.9 near Saipan, Northern Mariana Islands on 20 July at 10 km; M4.5 near Pagan region, Northern Mariana Islands on 04 July at 188 km.
That is 19% above the 3 events the Northern Mariana Islands averages per month across the 20 months on record.
Largest earthquakes in the Northern Mariana Islands, July 2026
4 events listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 4.9 | Pagan region, Northern Mariana Islands | 320.6 | Northern Mariana Islands | View details View | |
| 4.9 | Saipan, Northern Mariana Islands | 10.0 | Northern Mariana Islands | View details View | |
| 4.5 | Pagan region, Northern Mariana Islands | 187.8 | Northern Mariana Islands | View details View | |
| 4.4 | Pagan region, Northern Mariana Islands | 158.9 | Northern Mariana Islands | View details View |
Frequently asked questions
How many earthquakes hit the Northern Mariana Islands in July 2026?
4 earthquakes were recorded in the Northern Mariana Islands during July 2026, of which 4 were magnitude 4 or above.
What was the biggest earthquake in the Northern Mariana Islands in July 2026?
A magnitude 4.9 event near Pagan region, Northern Mariana Islands on 23 July 2026.
Other months in the Northern Mariana Islands
Magnitudes for July 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.