Earthquakes on December 28, 2021
279
EARTHQUAKES on December 28, 2021
24-hour UTC period · USGS data
LARGEST: M5.1 — 78 km NNE of Sola, Vanuatu
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
37
M3.0–3.9
10
M2.0–2.9
57
M1.0–1.9
174
Activity Summary
279
Total earthquakes
~250
Daily average
Normal
Activity level
1
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.1
78 km NNE of Sola, Vanuatu
19:53 UTC · 10.0 km deep
4.9
121 km NE of Lospalos, Timor Leste
10:51 UTC · 159.8 km deep
4.8
40 km ENE of Neiafu, Tonga
14:08 UTC · 29.0 km deep
4.7
Carlsberg Ridge
17:55 UTC · 10.0 km deep
4.7
Nicobar Islands, India region
07:06 UTC · 32.6 km deep
4.7
139 km SE of Ambon, Indonesia
07:05 UTC · 10.0 km deep
4.6
11 km WSW of Tena, Ecuador
20:22 UTC · 34.0 km deep
Felt by 1
4.6
248 km E of Levuka, Fiji
17:34 UTC · 579.9 km deep
Earthquake Map — December 28, 2021
All Earthquakes — December 28, 2021
Showing 30 of 105 (filtered from 279)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-28 2021-12-28 23:42:26 UTC | 2.1ml | 6 km S of Princeton, Canada 49.402°, -120.513° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
At 23:42 UTC on December 28, 2021, a magnitude 2.1 tremor occurred 6 km S of Princeton, Canada. 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. | ||||||||
2021-12-28 2021-12-28 23:21:08 UTC | 3.4ml | 28 km E of Slana, Alaska 62.669°, -143.402° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 seismic event took place 28 km E of Slana, Alaska on December 28, 2021 at 23:21 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 23:17:46 UTC | 2.8md | 13km S of Ferndale, CA 40.457°, -124.254° | 27.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 13km S of Ferndale, CA on December 28, 2021 at 23:17 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 23:16:29 UTC | 2.7md | 31km W of Petrolia, CA 40.292°, -124.650° | 19.8 km | - | - | - | ✓ Reviewed | USGS → |
December 28, 2021 brought a magnitude 2.7 earthquake 31km W of Petrolia, CA, logged at 23:16 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 23:00:23 UTC | 2.9ml | 25 km WNW of Stanley, Idaho 44.345°, -115.203° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2021 at 23:00 UTC, a magnitude 2.9 earthquake struck 25 km WNW of Stanley, Idaho. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 22:42:33 UTC | 2.0ml | 22km SSW of La Quinta, CA 33.488°, -116.427° | 9.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 22km SSW of La Quinta, CA came in on December 28, 2021 at 22:42 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 22:27:53 UTC | 2.5ml | 30 km ESE of Slana, Alaska 62.653°, -143.385° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 30 km ESE of Slana, Alaska with origin time 22:27 UTC on December 28, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 22:26:31 UTC | 4.3mb | 144 km NNW of Amahai, Indonesia -2.233°, 128.225° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake 144 km NNW of Amahai, Indonesia at 22:26 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 21:57:46 UTC | 3.2ml | 1 km SSE of Chorti?tis, Greece 40.600°, 23.108° | 10.0 km | 19 | - | - | ✓ Reviewed | USGS → |
On December 28, 2021, worldwide seismic activity registered a magnitude 3.2 earthquake 1 km SSE of Chorti?tis, Greece at 21:57 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 21:49:27 UTC | 4.3mb | 146 km WNW of Tobelo, Indonesia 2.224°, 126.788° | 39.2 km | - | - | - | ✓ Reviewed | USGS → |
At 21:49 UTC on December 28, 2021, a magnitude 4.3 tremor occurred 146 km WNW of Tobelo, Indonesia. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 21:43:18 UTC | 2.2ml | 39 km WNW of Nanwalek, Alaska 59.517°, -152.539° | 70.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 39 km WNW of Nanwalek, Alaska on December 28, 2021 at 21:43 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 21:16:07 UTC | 2.2md | 2 km ESE of P?hala, Hawaii 19.193°, -155.460° | 35.5 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.2 earthquake 2 km ESE of P?hala, Hawaii at 21:16 UTC on December 28, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 5 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:59:34 UTC | 4.4mb | 19 km NE of Santa Cruz, Philippines 13.173°, 120.869° | 85.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 19 km NE of Santa Cruz, Philippines came in on December 28, 2021 at 20:59 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:47:37 UTC | 4.3mb | 37 km SSE of Shizunai-furukawach?, Japan 42.040°, 142.594° | 62.6 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 37 km SSE of Shizunai-furukawach?, Japan at 20:47 UTC on December 28, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:41:10 UTC | 2.3ml | 9 km NE of P?hala, Hawaii 19.255°, -155.410° | 32.5 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.3 earthquake 9 km NE of P?hala, Hawaii at 20:41 UTC on December 28, 2021. It arrived roughly 5 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:27:04 UTC | 2.1ml | 17 km NNE of Dillon, Montana 45.372°, -112.580° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 17 km NNE of Dillon, Montana came in on December 28, 2021 at 20:27 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:22:22 UTC | 4.6mb | 11 km WSW of Tena, Ecuador -1.051°, -77.903° | 34.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 11 km WSW of Tena, Ecuador on December 28, 2021, with origin time 20:22 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:19:26 UTC | 3.3ml | 24 km SE of Wright, Wyoming 43.623°, -105.237° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2021 at 20:19 UTC, a magnitude 3.3 earthquake struck 24 km SE of Wright, Wyoming. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 20:11:27 UTC | 4.3mb | Izu Islands, Japan region 31.603°, 142.197° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected in the Izu Islands, Japan region on December 28, 2021, with origin time 20:11 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 19:53:17 UTC | 5.1mb | 78 km NNE of Sola, Vanuatu -13.235°, 167.860° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2021 at 19:53 UTC, a magnitude 5.1 earthquake struck 78 km NNE of Sola, Vanuatu. It is the largest earthquake currently listed for worldwide seismic activity on December 28, 2021. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 19:50:40 UTC | 4.1mb | 294 km ENE of Lospalos, Timor Leste -7.178°, 129.302° | 155.6 km | - | - | - | ✓ Reviewed | USGS → |
At 19:50 UTC on December 28, 2021, a magnitude 4.1 tremor occurred 294 km ENE of Lospalos, Timor Leste. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 19:25:15 UTC | 4.3mb | 15 km SSW of Skikda, Algeria 36.738°, 6.862° | 11.6 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 15 km SSW of Skikda, Algeria came in on December 28, 2021 at 19:25 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 18:57:13 UTC | 2.2md | 15 km SSE of Sunnyside, Utah 39.423°, -110.305° | -2.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 15 km SSE of Sunnyside, Utah on December 28, 2021 at 18:57 UTC. 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. | ||||||||
2021-12-28 2021-12-28 18:56:42 UTC | 3.0ml | 26 km SSE of Antelope Valley-Crestview, Wyoming 43.991°, -105.406° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 26 km SSE of Antelope Valley-Crestview, Wyoming on December 28, 2021, with origin time 18:56 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 18:46:23 UTC | 4.5mb | South Sandwich Islands region -57.631°, -25.437° | 22.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded in the South Sandwich Islands region on December 28, 2021 at 18:46 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 17:55:15 UTC | 4.7mb | Carlsberg Ridge 3.528°, 63.886° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake near Carlsberg Ridge at 17:55 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 17:34:34 UTC | 4.6mb | 248 km E of Levuka, Fiji -18.100°, -178.332° | 579.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 248 km E of Levuka, Fiji came in on December 28, 2021 at 17:34 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-28 2021-12-28 17:18:45 UTC | 2.0ml | 98 km SSE of Yakutat, Alaska 58.733°, -139.041° | 0.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 98 km SSE of Yakutat, Alaska on December 28, 2021 at 17:18 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. | ||||||||
2021-12-28 2021-12-28 17:12:17 UTC | 2.0ml | 9 km ENE of North Pearsall, Texas 28.943°, -99.006° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
December 28, 2021 brought a magnitude 2.0 earthquake 9 km ENE of North Pearsall, Texas, logged at 17:12 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. | ||||||||
2021-12-28 2021-12-28 16:40:47 UTC | 4.5mb | 27 km SE of Blenheim, New Zealand -41.672°, 174.205° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 27 km SE of Blenheim, New Zealand with origin time 16:40 UTC on December 28, 2021. The event was offshore. 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 28, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.