Earthquakes on December 6, 2025
299
EARTHQUAKES on December 6, 2025
24-hour UTC period · USGS data
10 km deep · 1,058 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
55
M3.0–3.9
63
M2.0–2.9
61
M1.0–1.9
114
Activity Summary
299
Total earthquakes
~250
Daily average
Normal
Activity level
6
M5.0+ events
Significant Earthquakes (M4.5+)
7.0
2025 Hubbard Glacier Earthquake
20:41 UTC · 10.3 km deep
Felt by 1,058
5.2
93 km NNE of Yakutat, Alaska
20:46 UTC · 5.0 km deep
Felt by 1
5.1
southern East Pacific Rise
15:12 UTC · 10.0 km deep
5.1
159 km ESE of Petropavlovsk-Kamchatsky, Russia
02:10 UTC · 13.1 km deep
5.1
85 km W of Tobelo, Indonesia
00:44 UTC · 113.6 km deep
5.1
88 km NNE of Yakutat, Alaska
20:51 UTC · 10.8 km deep
Felt by 13
4.9
96 km N of Yakutat, Alaska
20:54 UTC · 5.0 km deep
4.8
7 km WNW of Kalávryta, Greece
20:48 UTC · 15.9 km deep
Felt by 4
Earthquake Map — December 6, 2025

All Earthquakes — December 6, 2025
Showing 30 of 185 (filtered from 299)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-12-06 2025-12-06 23:59:52 UTC | 3.0ml | 92 km N of Yakutat, Alaska 60.379°, -139.603° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 seismic event took place 92 km N of Yakutat, Alaska on December 6, 2025 at 23:59 UTC. This event falls inside the aftershock decay of a nearby magnitude 7.0 earthquake that occurred about 3 hours earlier. 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. Geolocation places the event at 60.379°N, -139.603°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:56:28 UTC | 4.4mb | West Chile Rise -41.275°, -86.034° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake near West Chile Rise with origin time 23:56 UTC on December 6, 2025. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Geolocation places the event at -41.275°N, -86.034°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:53:23 UTC | 3.0ml | 122 km NNW of Yakutat, Alaska 60.618°, -140.240° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2025 brought a magnitude 3.0 earthquake 122 km NNW of Yakutat, Alaska, logged at 23:53 UTC. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This was a shallow crustal earthquake, focused at 5.0 km depth. Coordinates: 60.618°, -140.240°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:50:18 UTC | 2.7ml | 130 km N of Yakutat, Alaska 60.714°, -139.780° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 130 km N of Yakutat, Alaska at 23:50 UTC on December 6, 2025. This event falls inside the aftershock decay of a nearby magnitude 4.4 earthquake that occurred about 1 hours earlier. At a depth of 5.0 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 60.714°N, -139.780°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. | ||||||||
2025-12-06 2025-12-06 23:45:24 UTC | 2.8ml | 106 km N of Yakutat, Alaska 60.500°, -139.920° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:45 UTC on December 6, 2025, a magnitude 2.8 tremor occurred 106 km N of Yakutat, Alaska. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. Coordinates: 60.500°, -139.920°. 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. | ||||||||
2025-12-06 2025-12-06 23:40:55 UTC | 3.5ml | 101 km N of Yakutat, Alaska 60.461°, -139.766° | 5.0 km | - | IV | - | ✓ Reviewed | USGS → |
This magnitude 3.5 event was detected 101 km N of Yakutat, Alaska on December 6, 2025, with origin time 23:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 3 hours earlier. On the Modified Mercalli scale, shaking reached 4.0 — considered moderate. The hypocenter lay at 5.0 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 60.461°N, -139.766°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:38:21 UTC | 3.2ml | 102 km N of Yakutat, Alaska 60.459°, -139.518° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.2 earthquake 102 km N of Yakutat, Alaska with origin time 23:38 UTC on December 6, 2025. It arrived roughly 3 hours after a larger magnitude 7.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event originated approximately 7.8 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 60.459°, -139.518°. 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. | ||||||||
2025-12-06 2025-12-06 23:36:45 UTC | 3.2ml | 101 km N of Yakutat, Alaska 60.447°, -139.504° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2025, worldwide seismic activity registered a magnitude 3.2 earthquake 101 km N of Yakutat, Alaska at 23:36 UTC. This event falls inside the aftershock decay of a nearby magnitude 7.0 earthquake that occurred about 3 hours earlier. This was a shallow crustal earthquake, focused at 5.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.447°N, -139.504°E. 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. | ||||||||
2025-12-06 2025-12-06 23:34:00 UTC | 4.4mb | 100 km N of Yakutat, Alaska 60.447°, -139.557° | 5.0 km | - | IV | green | ✓ Reviewed | USGS → |
On December 6, 2025, worldwide seismic activity registered a magnitude 4.4 earthquake 100 km N of Yakutat, Alaska at 23:34 UTC. A tsunami evaluation was automatically initiated given the magnitude and location. Coming 3 hours after a magnitude 7.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. Peak ground motion corresponded to MMI 4.7, classified as moderate shaking. This was a shallow crustal earthquake, focused at 5.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.447°, -139.557°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:32:27 UTC | 3.1ml | 108 km N of Yakutat, Alaska 60.510°, -140.018° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 108 km N of Yakutat, Alaska on December 6, 2025 at 23:32 UTC. It arrived roughly 1 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a shallow crustal earthquake, focused at 5.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.510°, -140.018°. 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. | ||||||||
2025-12-06 2025-12-06 23:30:55 UTC | 2.2ml | 10 km ESE of Loco, Oklahoma 34.282°, -97.587° | 5.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 10 km ESE of Loco, Oklahoma on December 6, 2025, with origin time 23:30 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. The hypocenter lay at 5.0 km, placing this in the shallow crustal category. Coordinates: 34.282°, -97.587°. 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. | ||||||||
2025-12-06 2025-12-06 23:28:15 UTC | 2.8ml | 115 km N of Yakutat, Alaska 60.569°, -140.076° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 115 km N of Yakutat, Alaska at 23:28 UTC on December 6, 2025. It arrived roughly 1 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a shallow crustal earthquake, focused at 5.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.569°, -140.076°. 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. | ||||||||
2025-12-06 2025-12-06 23:25:48 UTC | 2.6ml | 122 km N of Yakutat, Alaska 60.642°, -139.934° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 122 km N of Yakutat, Alaska on December 6, 2025 at 23:25 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. This was a shallow crustal earthquake, focused at 5.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.642°N, -139.934°E. 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. | ||||||||
2025-12-06 2025-12-06 23:18:26 UTC | 3.3ml | 109 km N of Yakutat, Alaska 60.522°, -140.017° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place 109 km N of Yakutat, Alaska on December 6, 2025 at 23:18 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. The hypocenter lay at 5.0 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 60.522°N, -140.017°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:17:13 UTC | 2.9ml | 110 km N of Yakutat, Alaska 60.537°, -139.848° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 110 km N of Yakutat, Alaska at 23:17 UTC on December 6, 2025. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of just 5.0 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: 60.537°, -139.848°. 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. | ||||||||
2025-12-06 2025-12-06 23:14:46 UTC | 3.3ml | 114 km N of Yakutat, Alaska 60.558°, -140.058° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2025 brought a magnitude 3.3 earthquake 114 km N of Yakutat, Alaska, logged at 23:14 UTC. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of 5.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.558°, -140.058°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:13:08 UTC | 2.6ml | 108 km N of Yakutat, Alaska 60.519°, -139.951° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 108 km N of Yakutat, Alaska with origin time 23:13 UTC on December 6, 2025. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The hypocenter lay at 5.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.519°, -139.951°. 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. | ||||||||
2025-12-06 2025-12-06 23:10:34 UTC | 3.1ml | 96 km N of Yakutat, Alaska 60.405°, -139.492° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 96 km N of Yakutat, Alaska with origin time 23:10 UTC on December 6, 2025. This event falls inside the aftershock decay of a nearby magnitude 7.0 earthquake that occurred about 2 hours earlier. The hypocenter lay at 5.0 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 60.405°N, -139.492°E. 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. | ||||||||
2025-12-06 2025-12-06 23:06:29 UTC | 4.3mb | 111 km N of Yakutat, Alaska 60.546°, -139.831° | 5.0 km | - | IV | green | ✓ Reviewed | USGS → |
At 23:06 UTC on December 6, 2025, a magnitude 4.3 tremor occurred 111 km N of Yakutat, Alaska. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. On the Modified Mercalli scale, shaking reached 4.6 — considered moderate. 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. Geolocation places the event at 60.546°N, -139.831°E. 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. | ||||||||
2025-12-06 2025-12-06 23:05:47 UTC | 3.4ml | 117 km NNW of Yakutat, Alaska 60.574°, -140.208° | 5.0 km | - | IV | green | ✓ Reviewed | USGS → |
December 6, 2025 brought a magnitude 3.4 earthquake 117 km NNW of Yakutat, Alaska, logged at 23:05 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. On the Modified Mercalli scale, shaking reached 4.2 — considered moderate. This was a shallow crustal earthquake, focused at 5.0 km depth. Geolocation places the event at 60.574°N, -140.208°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:02:53 UTC | 3.8ml | 109 km N of Yakutat, Alaska 60.508°, -140.103° | 5.0 km | - | IV | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.8 earthquake 109 km N of Yakutat, Alaska at 23:02 UTC on December 6, 2025. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. Peak ground motion corresponded to MMI 4.3, classified as moderate shaking. At a depth of 5.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.508°, -140.103°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:02:12 UTC | 4.4mb | 111 km N of Yakutat, Alaska 60.545°, -139.894° | 5.0 km | - | IV | green | ✓ Reviewed | USGS → |
At 23:02 UTC on December 6, 2025, a magnitude 4.4 tremor occurred 111 km N of Yakutat, Alaska. A tsunami evaluation was automatically initiated given the magnitude and location. It arrived roughly 1 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. Maximum shaking intensity peaked at MMI 4.7 (moderate). The hypocenter lay at 5.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.545°, -139.894°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 23:01:33 UTC | 3.1ml | 101 km N of Yakutat, Alaska 60.457°, -139.530° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2025, worldwide seismic activity registered a magnitude 3.1 earthquake 101 km N of Yakutat, Alaska at 23:01 UTC. Coming 2 hours after a magnitude 7.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of 5.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.457°, -139.530°. 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. | ||||||||
2025-12-06 2025-12-06 22:58:29 UTC | 3.2ml | 95 km N of Yakutat, Alaska 60.399°, -139.522° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:58 UTC on December 6, 2025, a magnitude 3.2 tremor occurred 95 km N of Yakutat, Alaska. Coming 2 hours after a magnitude 7.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The hypocenter lay at 5.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.399°, -139.522°. 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. | ||||||||
2025-12-06 2025-12-06 22:52:50 UTC | 3.4ml | 114 km N of Yakutat, Alaska 60.569°, -139.917° | 2.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2025 at 22:52 UTC, a magnitude 3.4 earthquake struck 114 km N of Yakutat, Alaska. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of just 2.5 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: 60.569°, -139.917°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 22:50:44 UTC | 4.1mb | 107 km N of Yakutat, Alaska 60.508°, -139.945° | 5.0 km | - | IV | - | ✓ Reviewed | USGS → |
December 6, 2025 brought a magnitude 4.1 earthquake 107 km N of Yakutat, Alaska, logged at 22:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. On the Modified Mercalli scale, shaking reached 4.7 — considered moderate. At a depth of 5.0 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 60.508°N, -139.945°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 22:48:45 UTC | 3.4ml | 105 km N of Yakutat, Alaska 60.493°, -139.612° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded 105 km N of Yakutat, Alaska on December 6, 2025 at 22:48 UTC. It arrived roughly 2 hours after a larger magnitude 5.2 mainshock in the same 20 km area, placing it within the typical aftershock window. At a depth of 5.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.493°, -139.612°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 22:48:01 UTC | 4.1mb | 59 km SSW of Hualien City, Taiwan 23.451°, 121.477° | 30.7 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2025 at 22:48 UTC, a magnitude 4.1 earthquake struck 59 km SSW of Hualien City, Taiwan. The event originated approximately 30.7 km below the surface, classifying it as shallow crustal. Coordinates: 23.451°, 121.477°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 22:45:36 UTC | 3.9ml | 99 km N of Yakutat, Alaska 60.438°, -139.607° | 5.0 km | - | IV | - | ✓ Reviewed | USGS → |
A magnitude 3.9 earthquake was recorded 99 km N of Yakutat, Alaska on December 6, 2025 at 22:45 UTC. This event falls inside the aftershock decay of a nearby magnitude 7.0 earthquake that occurred about 2 hours earlier. On the Modified Mercalli scale, shaking reached 4.4 — considered moderate. At a depth of 5.0 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 60.438°N, -139.607°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-12-06 2025-12-06 22:42:49 UTC | 4.5mb | 97 km N of Yakutat, Alaska 60.417°, -139.684° | 5.0 km | - | V | green | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 97 km N of Yakutat, Alaska came in on December 6, 2025 at 22:42 UTC. Coming 2 hours after a magnitude 7.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. Peak ground motion corresponded to MMI 5.3, classified as strong shaking. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. At a depth of 5.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.417°, -139.684°. 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. | ||||||||
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 6, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.