Earthquakes on October 21, 2025
201
EARTHQUAKES on October 21, 2025
24-hour UTC period · USGS data
LARGEST: M5.2 — South Sandwich Islands region
85 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
44
M3.0–3.9
7
M2.0–2.9
33
M1.0–1.9
112
Activity Summary
201
Total earthquakes
~250
Daily average
Normal
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.2
South Sandwich Islands region
18:11 UTC · 84.9 km deep
5.1
58 km SE of Vilyuchinsk, Russia
23:37 UTC · 68.0 km deep
5.1
south of the Kermadec Islands
20:02 UTC · 10.0 km deep
5.1
34 km WSW of Ashkāsham, Afghanistan
18:14 UTC · 237.5 km deep
Felt by 4
5.0
101 km S of Kokopo, Papua New Guinea
03:47 UTC · 60.8 km deep
4.9
32 km ENE of Nūrābād, Iran
08:02 UTC · 10.0 km deep
Felt by 2
4.9
59 km ESE of Khandūd, Afghanistan
05:59 UTC · 10.0 km deep
Felt by 1
4.8
95 km ENE of Los Andes, Chile
14:08 UTC · 118.3 km deep
Felt by 21
Earthquake Map — October 21, 2025
All Earthquakes — October 21, 2025
Showing 30 of 89 (filtered from 201)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-10-21 2025-10-21 23:46:11 UTC | 3.5ml | 56 km W of Karluk, Alaska 57.648°, -155.393° | 0.0 km | - | II | - | Auto | USGS → |
On October 21, 2025 at 23:46 UTC, a magnitude 3.5 earthquake struck 56 km W of Karluk, Alaska. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 23:37:08 UTC | 5.1mww | 58 km SE of Vilyuchinsk, Russia 52.607°, 159.095° | 68.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded 58 km SE of Vilyuchinsk, Russia on October 21, 2025 at 23:37 UTC. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 23:06:08 UTC | 4.7mb | 2 km SSE of Fraijanes, Guatemala 14.448°, -90.431° | 177.9 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2025 brought a magnitude 4.7 earthquake 2 km SSE of Fraijanes, Guatemala, logged at 23:06 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 22:57:04 UTC | 4.4mb | 11 km NNW of Iray, Peru -15.753°, -72.656° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 11 km NNW of Iray, Peru on October 21, 2025 at 22:57 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 22:50:17 UTC | 4.1mb | 5 km SW of Cserkeszőlő, Hungary 46.828°, 20.145° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 5 km SW of Cserkeszőlő, Hungary with origin time 22:50 UTC on October 21, 2025. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 22:31:04 UTC | 3.4md | 62 km S of Boca de Yuma, Dominican Republic 17.819°, -68.566° | 80.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.4 earthquake 62 km S of Boca de Yuma, Dominican Republic with origin time 22:31 UTC on October 21, 2025. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 22:22:27 UTC | 4.4mb | Fiji region -20.923°, -179.081° | 637.8 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2025 brought a magnitude 4.4 earthquake in the Fiji region, logged at 22:22 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 21:48:16 UTC | 2.3ml | 13 km ESE of Pāhala, Hawaii 19.137°, -155.373° | 29.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 13 km ESE of Pāhala, Hawaii with origin time 21:48 UTC on October 21, 2025. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 21:33:45 UTC | 2.4md | 22 km WNW of Rincón, Puerto Rico 18.430°, -67.439° | 19.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 22 km WNW of Rincón, Puerto Rico on October 21, 2025 at 21:33 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 21:20:20 UTC | 2.2ml | 42 km WNW of Happy Valley, Alaska 60.106°, -152.425° | 92.1 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.2 earthquake 42 km WNW of Happy Valley, Alaska at 21:20 UTC on October 21, 2025. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 20:39:20 UTC | 3.2ml | 19 km N of Colstrip, Montana 46.055°, -106.643° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2025, worldwide seismic activity registered a magnitude 3.2 earthquake 19 km N of Colstrip, Montana at 20:39 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 20:06:28 UTC | 2.5ml | 57 km NW of Ninilchik, Alaska 60.409°, -152.408° | 87.8 km | - | - | - | Auto | USGS → |
This magnitude 2.5 event was detected 57 km NW of Ninilchik, Alaska on October 21, 2025, with origin time 20:06 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 20:02:05 UTC | 5.1mww | south of the Kermadec Islands -33.667°, -178.505° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake south of the Kermadec Islands with origin time 20:02 UTC on October 21, 2025. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:44:50 UTC | 2.2md | 3 km SSW of Cobb, CA 38.799°, -122.732° | 0.6 km | - | - | - | Auto | USGS → |
A magnitude 2.2 seismic event took place 3 km SSW of Cobb, CA on October 21, 2025 at 19:44 UTC. It arrived roughly 1 hours after a larger magnitude 2.8 mainshock in the same 20 km area, placing it within the typical aftershock window. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:44:30 UTC | 2.8md | 2 km ENE of The Geysers, CA 38.784°, -122.735° | 1.5 km | 2 | - | - | Auto | USGS → |
Reports of a magnitude 2.8 earthquake 2 km ENE of The Geysers, CA came in on October 21, 2025 at 19:44 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:34:37 UTC | 2.1md | 8 km ENE of Vallejo, CA 38.128°, -122.141° | 4.1 km | 5 | - | - | Auto | USGS → |
On October 21, 2025, worldwide seismic activity registered a magnitude 2.1 earthquake 8 km ENE of Vallejo, CA at 19:34 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:27:05 UTC | 2.6ml | 38 km SSW of Karluk, Alaska 57.279°, -154.805° | 54.7 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2025 at 19:27 UTC, a magnitude 2.6 earthquake struck 38 km SSW of Karluk, Alaska. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:26:51 UTC | 3.1ml | 68 km S of Akhiok, Alaska 56.333°, -154.144° | 56.7 km | - | - | - | Auto | USGS → |
At 19:26 UTC on October 21, 2025, a magnitude 3.1 tremor occurred 68 km S of Akhiok, Alaska. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:26:06 UTC | 4.6mb | 156 km SSE of Vilyuchinsk, Russia 51.582°, 159.035° | 58.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded 156 km SSE of Vilyuchinsk, Russia on October 21, 2025 at 19:26 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:07:19 UTC | 2.2md | 2 km E of Berkeley, CA 37.872°, -122.249° | 9.0 km | 10 | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 2 km E of Berkeley, CA on October 21, 2025, with origin time 19:07 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:04:56 UTC | 2.6ml | 69 km SSW of Kaktovik, Alaska 69.527°, -144.025° | 0.0 km | - | - | - | Auto | USGS → |
A magnitude 2.6 earthquake was recorded 69 km SSW of Kaktovik, Alaska on October 21, 2025 at 19:04 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 19:03:00 UTC | 4.6mb | 47 km WNW of Kotabumi, Indonesia -4.604°, 104.515° | 170.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake 47 km WNW of Kotabumi, Indonesia with origin time 19:03 UTC on October 21, 2025. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 18:48:32 UTC | 4.4mb | 112 km E of Namie, Japan 37.549°, 142.269° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2025 at 18:48 UTC, a magnitude 4.4 earthquake struck 112 km E of Namie, Japan. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 18:14:48 UTC | 5.1mww | 34 km WSW of Ashkāsham, Afghanistan 36.607°, 71.156° | 237.5 km | 4 | - | - | ✓ Reviewed | USGS → |
On October 21, 2025, worldwide seismic activity registered a magnitude 5.1 earthquake 34 km WSW of Ashkāsham, Afghanistan at 18:14 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 18:11:08 UTC | 5.2mb | South Sandwich Islands region -59.109°, -25.583° | 84.9 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2025 at 18:11 UTC, a magnitude 5.2 earthquake struck in the South Sandwich Islands region. It is the largest earthquake currently listed for worldwide seismic activity on October 21, 2025. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 18:05:40 UTC | 4.4mb | 68 km S of Severo-Kuril’sk, Russia 50.074°, 156.306° | 56.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 68 km S of Severo-Kuril’sk, Russia on October 21, 2025 at 18:05 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 18:04:41 UTC | 4.2mb | 40 km SE of Severo-Kuril’sk, Russia 50.441°, 156.558° | 55.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 40 km SE of Severo-Kuril’sk, Russia with origin time 18:04 UTC on October 21, 2025. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 17:52:26 UTC | 4.3mb | 156 km NE of Alugan, Philippines 13.162°, 126.552° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 156 km NE of Alugan, Philippines on October 21, 2025, with origin time 17:52 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 17:31:40 UTC | 4.2mb | 76 km ESE of Hakha, Burma (Myanmar) 22.468°, 94.326° | 88.3 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2025, worldwide seismic activity registered a magnitude 4.2 earthquake 76 km ESE of Hakha, Burma (Myanmar) at 17:31 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-10-21 2025-10-21 16:42:10 UTC | 4.4mb | 2 km S of Tauranga, New Zealand -37.710°, 176.168° | 286.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 2 km S of Tauranga, New Zealand with origin time 16:42 UTC on October 21, 2025. The event was offshore. See the M4.4 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.
About This Page
This page shows all earthquakes recorded by the USGS Earthquake Hazards Program during the 24-hour UTC period on October 21, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.