Seismic Activity in Samoa
Over the past 30 days, there have been 3 recorded earthquakes in this region. The largest recent earthquake was a magnitude 4.9 event near 54 km E of Hihifo, Tonga.
Earthquakes in Samoa
1 earthquakes in the last 24 hours• Latest significant: M4.9
Earthquake Map
Recent Earthquakes (Last 30 Days)
Dataset at a glance — Samoa
Over the past 30 days, Samoa has recorded 3 earthquakes of magnitude 2.5 or greater in our tracker. 3 landed between M4.0 and M4.9. By depth: 2 shallow (<70 km), 1 intermediate (70–300 km). 3 of the epicenters were offshore. Focal depths ranged from 10.0 km to 223.5 km. All 3 solutions have been reviewed by a USGS seismologist.
Each row in the table below includes a narrative summary of the event, ordered by time. Use the column headers to sort or filter by magnitude.
Showing 3 of 3
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
15 hours ago 2026-09-08 15:43:57 UTC | 4.9mb | 54 km E of Hihifo, Tonga -16.032°, -173.298° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2026 at 15:43 UTC, a magnitude 4.9 earthquake struck 54 km E of Hihifo, Tonga. It is the largest earthquake currently listed for Samoa over the past 30 days. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-19 2026-08-19 09:07:19 UTC | 4.7mb | 114 km E of Hihifo, Tonga -15.916°, -172.731° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 earthquake was recorded 114 km E of Hihifo, Tonga on August 19, 2026 at 09:07 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-19 2026-08-19 02:19:59 UTC | 4.5mb | 153 km NW of Hihifo, Tonga -15.175°, -174.985° | 223.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 153 km NW of Hihifo, Tonga with origin time 02:19 UTC on August 19, 2026. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
Legend:
Mag: Magnitude (magType = ml, mb, mw, etc.)
Felt: Number of DYFI felt reports
MMI: Modified Mercalli Intensity (I-X+)
Alert: PAGER alert level
Depth: Shallow (<70km), Intermediate, Deep (>300km)
Status: Auto = preliminary, Reviewed = verified by seismologist
Click any row to see additional technical details.
Earthquake Statistics
Last 24 Hours1
Last 30 Days3
2026 (M2.5+)142
Largest (30 Days)
M4.9
54 km E of Hihifo, Tonga
15 hours ago
Largest in 2026
M6.3
140 km ENE of Hihifo, Tonga
2026-03-22
Data from USGS Earthquake Hazards Program. Updated every 5 minutes.
About Samoa
Samoa lies near the northern end of the Tonga Trench subduction zone. The 2009 earthquake and tsunami caused significant casualties.
Samoa Earthquakes 2026
In 2026, Samoa has recorded 142 earthquakes of magnitude 2.5 or greater so far. The largest earthquake in Samoa in 2026 was a magnitude 6.3 event near Hihifo, Tonga.
Frequently Asked Questions
How many earthquakes occur in Samoa?
In the past 30 days, 3 earthquakes have been recorded in the Samoa region.
What was the biggest recent earthquake in Samoa?
The largest recent earthquake in the Samoa area was a magnitude 4.9 event that occurred 54 km E of Hihifo, Tonga.
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