Earthquakes on December 20, 2025
341
EARTHQUAKES on December 20, 2025
24-hour UTC period · USGS data
LARGEST: M5.6 — Balleny Islands region
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
30
M3.0–3.9
14
M2.0–2.9
100
M1.0–1.9
191
Activity Summary
341
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Significant Earthquakes (M4.5+)
5.6
Balleny Islands region
06:57 UTC · 10.0 km deep
5.3
108 km SSE of Colchane, Chile
20:30 UTC · 151.4 km deep
Felt by 1
5.3
Balleny Islands region
10:25 UTC · 10.0 km deep
5.2
70 km SSE of Nemuro, Japan
12:58 UTC · 35.0 km deep
5.2
78 km SSE of Nemuro, Japan
12:30 UTC · 10.0 km deep
5.0
126 km W of Gorontalo, Indonesia
10:33 UTC · 121.6 km deep
4.9
99 km SSW of Houma, Tonga
19:08 UTC · 73.3 km deep
4.9
182 km SE of Vilyuchinsk, Russia
00:24 UTC · 22.4 km deep
Earthquake Map — December 20, 2025
All Earthquakes — December 20, 2025
Showing 30 of 150 (filtered from 341)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-12-20 2025-12-20 23:46:28 UTC | 4.8mb | 91 km ESE of Shikotan, Russia 43.635°, 147.830° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.8 seismic event took place 91 km ESE of Shikotan, Russia on December 20, 2025 at 23:46 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 23:34:08 UTC | 2.2ml | 107 km N of Yakutat, Alaska 60.515°, -139.807° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
At 23:34 UTC on December 20, 2025, a magnitude 2.2 tremor occurred 107 km N of Yakutat, Alaska. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 7 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 23:20:21 UTC | 2.0md | 3 km WNW of Lynn, Arkansas 36.014°, -91.287° | 2.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 3 km WNW of Lynn, Arkansas on December 20, 2025 at 23:20 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 23:13:56 UTC | 4.0mb | 12 km WSW of Amorgós, Greece 36.786°, 25.776° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025, worldwide seismic activity registered a magnitude 4.0 earthquake 12 km WSW of Amorgós, Greece at 23:13 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 23:13:34 UTC | 2.3ml | 74 km SSE of Halibut Cove, Alaska 59.013°, -150.576° | 19.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 74 km SSE of Halibut Cove, Alaska with origin time 23:13 UTC on December 20, 2025. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:59:23 UTC | 4.3mb | 147 km E of Masamba, Indonesia -2.518°, 121.654° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 147 km E of Masamba, Indonesia came in on December 20, 2025 at 22:59 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:51:41 UTC | 3.2ml | 62 km SE of Adak, Alaska 51.424°, -176.097° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake 62 km SE of Adak, Alaska at 22:51 UTC on December 20, 2025. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:29:16 UTC | 2.5ml | 95 km N of Yakutat, Alaska 60.401°, -139.505° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 95 km N of Yakutat, Alaska on December 20, 2025, with origin time 22:29 UTC. It arrived roughly 5 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:27:35 UTC | 2.3ml | 23 km SSE of Denali National Park, Alaska 63.360°, -151.496° | 1.4 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025, worldwide seismic activity registered a magnitude 2.3 earthquake 23 km SSE of Denali National Park, Alaska at 22:27 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:20:38 UTC | 2.8ml | 77 km SSW of Adak, Alaska 51.243°, -177.120° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025, worldwide seismic activity registered a magnitude 2.8 earthquake 77 km SSW of Adak, Alaska at 22:20 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 22:04:28 UTC | 2.4ml | 17 km NW of Kalaoa, Hawaii 19.858°, -156.078° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025, worldwide seismic activity registered a magnitude 2.4 earthquake 17 km NW of Kalaoa, Hawaii at 22:04 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:54:34 UTC | 2.0ml | 105 km N of Yakutat, Alaska 60.496°, -139.779° | 17.8 km | - | - | - | ✓ Reviewed | USGS → |
At 21:54 UTC on December 20, 2025, a magnitude 2.0 tremor occurred 105 km N of Yakutat, Alaska. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 5 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:35:13 UTC | 3.1ml | 25 km ESE of Wright, Wyoming 43.664°, -105.195° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 25 km ESE of Wright, Wyoming came in on December 20, 2025 at 21:35 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:31:06 UTC | 2.0ml | 116 km N of Yakutat, Alaska 60.580°, -140.040° | 5.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 116 km N of Yakutat, Alaska at 21:31 UTC on December 20, 2025. Coming 5 hours after a magnitude 4.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:23:42 UTC | 2.5md | 8 km SW of Guánica, Puerto Rico 17.919°, -66.966° | 13.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025 at 21:23 UTC, a magnitude 2.5 earthquake struck 8 km SW of Guánica, Puerto Rico. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:20:56 UTC | 4.3mb | 45 km SW of Ialibu, Papua New Guinea -6.563°, 143.697° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 45 km SW of Ialibu, Papua New Guinea on December 20, 2025 at 21:20 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:15:29 UTC | 2.0ml | 117 km N of Yakutat, Alaska 60.593°, -139.964° | 8.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 117 km N of Yakutat, Alaska on December 20, 2025, with origin time 21:15 UTC. It arrived roughly 5 hours after a larger magnitude 4.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 21:01:06 UTC | 2.6ml | 104 km SSE of Akutan, Alaska 53.334°, -164.947° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 104 km SSE of Akutan, Alaska at 21:01 UTC on December 20, 2025. 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. | ||||||||
2025-12-20 2025-12-20 20:57:33 UTC | 2.8ml | 63 km WSW of Anchor Point, Alaska 59.629°, -152.918° | 89.5 km | - | - | - | ✓ Reviewed | USGS → |
At 20:57 UTC on December 20, 2025, a magnitude 2.8 tremor occurred 63 km WSW of Anchor Point, Alaska. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:54:01 UTC | 2.0ml | 117 km N of Yakutat, Alaska 60.594°, -139.914° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 117 km N of Yakutat, Alaska came in on December 20, 2025 at 20:54 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 4 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:50:40 UTC | 4.5mb | Balleny Islands region -63.835°, 173.018° | 11.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake in the Balleny Islands region with origin time 20:50 UTC on December 20, 2025. It arrived roughly 14 hours after a larger magnitude 5.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:31:52 UTC | 4.5mb | south of Africa -52.354°, 28.051° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 20, 2025, worldwide seismic activity registered a magnitude 4.5 earthquake south of Africa at 20:31 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:30:24 UTC | 5.3mww | 108 km SSE of Colchane, Chile -20.118°, -68.107° | 151.4 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 5.3 earthquake was recorded 108 km SSE of Colchane, Chile on December 20, 2025 at 20:30 UTC. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:21:47 UTC | 2.0ml | 15 km SE of Eureka Roadhouse, Alaska 61.833°, -146.974° | 16.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 15 km SE of Eureka Roadhouse, Alaska on December 20, 2025 at 20:21 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:14:05 UTC | 2.2ml | 90 km SW of Unalaska, Alaska 53.289°, -167.476° | 68.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 90 km SW of Unalaska, Alaska at 20:14 UTC on December 20, 2025. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:11:16 UTC | 4.2mb | 14 km WSW of Punta de Bombón, Peru -17.231°, -71.915° | 72.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 14 km WSW of Punta de Bombón, Peru on December 20, 2025, with origin time 20:11 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:07:44 UTC | 2.4ml | 103 km N of Yakutat, Alaska 60.476°, -139.589° | 2.8 km | - | - | - | ✓ Reviewed | USGS → |
At 20:07 UTC on December 20, 2025, a magnitude 2.4 tremor occurred 103 km N of Yakutat, Alaska. Coming 4 hours after a magnitude 4.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 20:00:18 UTC | 2.7ml | 97 km S of Sand Point, Alaska 54.467°, -160.323° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 97 km S of Sand Point, Alaska on December 20, 2025 at 20:00 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 19:53:56 UTC | 2.9ml | 210 km S of Atka, Alaska 50.308°, -174.245° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 210 km S of Atka, Alaska on December 20, 2025 at 19:53 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-20 2025-12-20 19:43:59 UTC | 2.4md | 9 km WNW of The Geysers, CA 38.820°, -122.840° | 2.3 km | - | - | - | Auto | USGS → |
A magnitude 2.4 seismic event took place 9 km WNW of The Geysers, CA on December 20, 2025 at 19:43 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 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 December 20, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.