Magnitude
M5.2
- Depth
- 10.0 km
- Source
- USGS
122 km SSW of Nikolski, Alaska
M5.2 Earthquake near 122 km SSW of Nikolski, Alaska
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:
Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.
Map
About this earthquake
A magnitude M5.2 earthquake was recorded near 122 km SSW of Nikolski, Alaska on September 16, 2025 at 09:02 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.
The data is provided by USGS and cross-checked across seismological networks.
Details
ID
fc8384032b528595c1befff53f9f43b545571cca
Magnitude
M5.2
Depth
10.0 km
UTC time
2025-09-16 09:02:36 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.98960,
-169.76460
Temperature
11.4°C
Depth profile
Shallow
10 km
Why depth matters
Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.
Depth classes per USGS
Official USGS aftershock forecast
Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.
Issued: Sep 16, 2026, 9:02 AM UTC · Last checked: Sep 17, 2026, 11:37 PM UTC
Updates are delayed. The last successfully retrieved data are shown.
Sep 16, 2026, 10:00 AM UTC – Sep 17, 2026, 10:00 AM UTC · Expired
| Magnitude | Probability ≥ 1 | Count (95% interval) |
|---|---|---|
| M ≥ 3.0 | 0.08 % | 0–0 |
| M ≥ 4.0 | < 0.01 % | 0–0 |
| M ≥ 5.0 | < 0.01 % | 0–0 |
| M ≥ 6.0 | < 0.01 % | 0–0 |
| M ≥ 7.0 | < 0.01 % | 0–0 |
Sep 16, 2026, 10:00 AM UTC – Sep 23, 2026, 10:00 AM UTC · Expired
| Magnitude | Probability ≥ 1 | Count (95% interval) |
|---|---|---|
| M ≥ 3.0 | 0.57 % | 0–0 |
| M ≥ 4.0 | 0.06 % | 0–0 |
| M ≥ 5.0 | < 0.01 % | 0–0 |
| M ≥ 6.0 | < 0.01 % | 0–0 |
| M ≥ 7.0 | < 0.01 % | 0–0 |
Sep 16, 2026, 10:00 AM UTC – Oct 16, 2026, 10:00 AM UTC
| Magnitude | Probability ≥ 1 | Count (95% interval) |
|---|---|---|
| M ≥ 3.0 | 2.32 % | 0–0 |
| M ≥ 4.0 | 0.24 % | 0–0 |
| M ≥ 5.0 | 0.02 % | 0–0 |
| M ≥ 6.0 | < 0.01 % | 0–0 |
| M ≥ 7.0 | < 0.01 % | 0–0 |
Sep 16, 2026, 10:00 AM UTC – Sep 16, 2027, 10:00 AM UTC
| Magnitude | Probability ≥ 1 | Count (95% interval) |
|---|---|---|
| M ≥ 3.0 | 17.56 % | 0–2 |
| M ≥ 4.0 | 2.11 % | 0–0 |
| M ≥ 5.0 | 0.22 % | 0–0 |
| M ≥ 6.0 | 0.02 % | 0–0 |
| M ≥ 7.0 | < 0.01 % | 0–0 |
The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.
Volcanoes nearby
Subsequent earthquakes nearby
Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.
First 6 hours1
First 24 hours1
First 72 hours1
Strongest subsequent eventM5.3
No unambiguous area assignment
Context for this earthquake
This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.
Earthquake overviewHistorical context nearby
Comparison with recorded earthquakes before this event within 150 km.
Magnitude rank#15
Earlier events M≥456
Earlier events M≥527
Compared since2025-01-13
The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.
Strongest earlier events
M6.02025-09-03 20:57:47 UTC38.7 km87 km SW of Nikolski, Alaska
M5.92025-09-03 20:57:50 UTC25.8 kmFox Islands, Aleutian Islands, United States [Sea: United States]
M5.82025-09-03 20:57:51 UTC129.7 kmFox Islands, Aleutian Islands
M5.82025-09-03 20:57:52 UTC26.2 km96 km SSW of Nikolski, Alaska
M5.82025-09-03 20:57:48 UTC45.3 kmFox Islands, Aleutian Islands
Stats (last 24h)
Global (24h)
494
Country (24h)
—
—
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