LIGHT EARTHQUAKE
Mariana Islands region
A magnitude 4.2 earthquake struck Mariana Islands region on 20 Aug 2026, 14:51 UTC. The hypocentre was 207.4 km below the surface — intermediate by seismological convention. 3 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.
- Depth
- 207.4 km
- Latitude
- 21.96°N
- Time
- 14:51 UTC
- Magnitude
- M4.2
intermediate
143.02°E longitude
20 Aug 2026
mb
EPICENTRE
MAGNITUDE 4.2
Noticeable shaking of indoor objects. Damage is unlikely.
The scale is logarithmic: this released about 63 times the energy of a magnitude 3.0, roughly the energy of 30 tonnes of TNT.
207.4 KM DEEP
At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.
NEARBY IN THE PAST 30 DAYS
3 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 4.6.
OTHER RECENT EARTHQUAKES
07 Nov 2026, 23:27 UTC · 10 km deep
07 Nov 2026, 23:25 UTC · 607 km deep
07 Nov 2026, 23:17 UTC · 10 km deep
07 Nov 2026, 20:55 UTC · 136.7 km deep