Earthquakes on December 20, 2025: 341 Worldwide, Largest M5.6

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. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Coordinates: 43.635°, 147.830°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 5.5 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.515°N, -139.807°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 2.8 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Geolocation places the event at 36.014°N, -91.287°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 10.0 km, the event was shallow crustal. The epicenter is at 36.786°, 25.776°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. The event originated approximately 19.2 km below the surface, classifying it as shallow crustal. Geolocation places the event at 59.013°N, -150.576°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. A small number of nearby observers (1) submitted felt reports to the USGS. At a depth of 10.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: -2.518°, 121.654°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 35.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 51.424°, -176.097°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 5.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.401°, -139.505°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 1.4 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 63.360°, -151.496°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 35.0 km, the event was shallow crustal. Coordinates: 51.243°, -177.120°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 10.2 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 19.858°N, -156.078°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 hypocenter lay at 17.8 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.496°N, -139.779°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 0.0 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 43.664°, -105.195°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 5.4 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.580°, -140.040°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 13.5 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 17.919°N, -66.966°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 10.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at -6.563°, 143.697°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 8.5 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.593°, -139.964°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 4.7 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 53.334°, -164.947°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. The event originated approximately 89.5 km below the surface, classifying it as intermediate depth. The epicenter is at 59.629°, -152.918°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. This was a shallow crustal earthquake, focused at 7.5 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.594°N, -139.914°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. The hypocenter lay at 11.2 km, placing this in the shallow crustal category. The epicenter is at -63.835°, 173.018°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of 10.0 km, the event was shallow crustal. Geolocation places the event at -52.354°N, 28.051°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. It ranks as the second largest event in the current dataset. A small number of nearby observers (1) submitted felt reports to the USGS. At a depth of 151.4 km, the event was intermediate depth. Geolocation places the event at -20.118°N, -68.107°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 hypocenter lay at 16.8 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 61.833°, -146.974°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. This was a shallow crustal earthquake, focused at 68.4 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 53.289°, -167.476°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. The event originated approximately 72.7 km below the surface, classifying it as intermediate depth. Coordinates: -17.231°, -71.915°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 2.8 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.476°, -139.589°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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 originated approximately 35.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 54.467°N, -160.323°E. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. This was a shallow crustal earthquake, focused at 10.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 50.308°, -174.245°. The solution has been reviewed by a USGS seismologist and is considered finalized. 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. At a depth of just 2.3 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The epicenter is at 38.820°, -122.840°. The automatic solution is preliminary and may be refined as additional station data arrives. 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.

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