Earthquakes on October 28, 2020
480
EARTHQUAKES on October 28, 2020
24-hour UTC period · USGS data
LARGEST: M5.8 — 64 km N of La Serena, Chile
50 km deep · 43 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
11
M4.0–4.9
41
M3.0–3.9
22
M2.0–2.9
131
M1.0–1.9
275
Activity Summary
480
Total earthquakes
~250
Daily average
Elevated
Activity level
11
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.8
64 km N of La Serena, Chile
14:53 UTC · 50.0 km deep
Felt by 43
5.8
65 km SSW of Sola, Vanuatu
14:12 UTC · 180.0 km deep
5.6
60 km WSW of Changuillo, Peru
09:02 UTC · 22.0 km deep
Felt by 6
5.5
34 km W of Rauco, Chile
04:52 UTC · 57.6 km deep
Felt by 130
5.5
123 km NNE of Atka, Alaska
04:13 UTC · 239.7 km deep
5.4
Easter Island region
22:08 UTC · 10.0 km deep
5.4
South Shetland Islands
22:00 UTC · 10.0 km deep
5.4
Pacific-Antarctic Ridge
12:25 UTC · 10.0 km deep
Earthquake Map — October 28, 2020
All Earthquakes — October 28, 2020
Showing 30 of 205 (filtered from 480)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-10-28 2020-10-28 23:53:57 UTC | 2.1ml | 9km S of Progreso, B.C., MX 32.496°, -115.576° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 9km S of Progreso, B.C., MX on October 28, 2020 at 23:53 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:35:08 UTC | 2.5ml | 109 km SE of King Cove, Alaska 54.297°, -161.257° | 28.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 109 km SE of King Cove, Alaska at 23:35 UTC on October 28, 2020. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:34:33 UTC | 4.4mb | South Sandwich Islands region -59.982°, -26.439° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 28, 2020, worldwide seismic activity registered a magnitude 4.4 earthquake in the South Sandwich Islands region at 23:34 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:25:57 UTC | 2.4md | 12 km SSE of Guánica, Puerto Rico 17.866°, -66.869° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 28, 2020 at 23:25 UTC, a magnitude 2.4 earthquake struck 12 km SSE of Guánica, Puerto Rico. It arrived roughly 14 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:24:48 UTC | 3.8mb | 111 km SSE of Sand Point, Alaska 54.502°, -159.550° | 21.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.8 earthquake 111 km SSE of Sand Point, Alaska with origin time 23:24 UTC on October 28, 2020. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:15:16 UTC | 2.1ml | 98 km SSE of Sand Point, Alaska 54.533°, -159.844° | 9.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 98 km SSE of Sand Point, Alaska at 23:15 UTC on October 28, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 21 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:13:50 UTC | 2.0ml | 121 km SSE of Sand Point, Alaska 54.295°, -159.935° | 8.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 121 km SSE of Sand Point, Alaska on October 28, 2020, with origin time 23:13 UTC. It arrived roughly 1 hours after a larger magnitude 3.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:05:46 UTC | 2.8ml | 149 km SSE of Sand Point, Alaska 54.111°, -159.568° | 25.8 km | - | - | - | ✓ Reviewed | USGS → |
On October 28, 2020 at 23:05 UTC, a magnitude 2.8 earthquake struck 149 km SSE of Sand Point, Alaska. It arrived roughly 1 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 23:04:44 UTC | 2.0ml | 18 km E of Ferry, Alaska 64.001°, -148.731° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 18 km E of Ferry, Alaska came in on October 28, 2020 at 23:04 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. | ||||||||
2020-10-28 2020-10-28 22:58:05 UTC | 2.8md | 8 km E of P?hala, Hawaii 19.198°, -155.397° | 31.6 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 8 km E of P?hala, Hawaii on October 28, 2020 at 22:58 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:51:06 UTC | 2.3ml | 131 km SSE of Sand Point, Alaska 54.214°, -159.871° | 23.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 131 km SSE of Sand Point, Alaska at 22:51 UTC on October 28, 2020. Coming 1 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:47:22 UTC | 4.9mb | 225 km NNW of Lorengau, Papua New Guinea -0.120°, 146.574° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.9 earthquake was recorded 225 km NNW of Lorengau, Papua New Guinea on October 28, 2020 at 22:47 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:24:22 UTC | 2.1md | Island of Hawaii, Hawaii 19.187°, -155.389° | 31.7 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded near Island of Hawaii, Hawaii on October 28, 2020 at 22:24 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 19 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:20:44 UTC | 2.9ml | 132 km SSE of Sand Point, Alaska 54.237°, -159.724° | 29.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 132 km SSE of Sand Point, Alaska came in on October 28, 2020 at 22:20 UTC. Coming 1 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:19:09 UTC | 2.8md | 2 km WNW of Guayanilla, Puerto Rico 18.033°, -66.815° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
October 28, 2020 brought a magnitude 2.8 earthquake 2 km WNW of Guayanilla, Puerto Rico, logged at 22:19 UTC. Coming 13 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:18:40 UTC | 2.4ml | 108 km SSE of Sand Point, Alaska 54.499°, -159.636° | 25.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 108 km SSE of Sand Point, Alaska on October 28, 2020 at 22:18 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 21 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:14:47 UTC | 3.0ml | 96 km SSE of Sand Point, Alaska 54.554°, -159.834° | 23.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 96 km SSE of Sand Point, Alaska came in on October 28, 2020 at 22:14 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 20 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:08:44 UTC | 4.8mb | Volcano Islands, Japan region 22.159°, 144.485° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 28, 2020, worldwide seismic activity registered a magnitude 4.8 earthquake in the Volcano Islands, Japan region at 22:08 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:08:08 UTC | 5.4mww | Easter Island region -29.763°, -111.641° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.4 earthquake in the Easter Island region at 22:08 UTC on October 28, 2020. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:06:00 UTC | 2.9ml | 113 km SSE of Sand Point, Alaska 54.474°, -159.543° | 21.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 113 km SSE of Sand Point, Alaska on October 28, 2020 at 22:06 UTC. It arrived roughly 20 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:03:49 UTC | 4.3mb | 148 km NE of Lospalos, Timor Leste -7.529°, 127.908° | 160.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 148 km NE of Lospalos, Timor Leste on October 28, 2020 at 22:03 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 22:00:23 UTC | 5.4mww | South Shetland Islands -62.322°, -58.183° | 10.0 km | - | IV | - | ✓ Reviewed | USGS → |
This magnitude 5.4 event was detected near South Shetland Islands on October 28, 2020, with origin time 22:00 UTC. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:58:41 UTC | 3.5mb | 134 km SSE of Sand Point, Alaska 54.207°, -159.744° | 23.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.5 earthquake 134 km SSE of Sand Point, Alaska came in on October 28, 2020 at 21:58 UTC. It arrived roughly 1 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:58:31 UTC | 4.6mb | South Shetland Islands -62.379°, -58.336° | 12.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near South Shetland Islands on October 28, 2020 at 21:58 UTC. It arrived roughly 1 hours after a larger magnitude 4.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:57:00 UTC | 4.7mb | South Shetland Islands -62.291°, -58.147° | 5.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.7 earthquake near South Shetland Islands at 21:57 UTC on October 28, 2020. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:52:27 UTC | 3.6mb | 135 km SSE of Sand Point, Alaska 54.221°, -159.652° | 29.6 km | - | - | - | ✓ Reviewed | USGS → |
At 21:52 UTC on October 28, 2020, a magnitude 3.6 tremor occurred 135 km SSE of Sand Point, Alaska. 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 M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:51:48 UTC | 2.4ml | 115 km SSE of Sand Point, Alaska 54.345°, -159.957° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
October 28, 2020 brought a magnitude 2.4 earthquake 115 km SSE of Sand Point, Alaska, logged at 21:51 UTC. Coming 20 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:45:07 UTC | 2.9md | 2 km SW of Guánica, Puerto Rico 17.961°, -66.924° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 2 km SW of Guánica, Puerto Rico came in on October 28, 2020 at 21:45 UTC. It arrived roughly 13 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:43:00 UTC | 3.0md | 1 km SSE of Magas Arriba, Puerto Rico 18.003°, -66.760° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 1 km SSE of Magas Arriba, Puerto Rico at 21:43 UTC on October 28, 2020. It arrived roughly 13 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-28 2020-10-28 21:13:34 UTC | 2.7ml | 97 km S of McCarthy, Alaska 60.567°, -142.726° | 10.1 km | - | - | - | ✓ Reviewed | USGS → |
At 21:13 UTC on October 28, 2020, a magnitude 2.7 tremor occurred 97 km S of McCarthy, Alaska. The event was offshore. See the M2.7 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 28, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.