Earthquakes on October 31, 2020
306
EARTHQUAKES on October 31, 2020
24-hour UTC period · USGS data
LARGEST: M5.2 — South Shetland Islands
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
36
M3.0–3.9
18
M2.0–2.9
73
M1.0–1.9
176
Activity Summary
306
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.2
South Shetland Islands
07:41 UTC · 10.0 km deep
5.1
South Sandwich Islands region
21:04 UTC · 19.7 km deep
5.1
south of the Fiji Islands
10:15 UTC · 549.5 km deep
4.9
10 km NNW of Kokkári, Greece
05:31 UTC · 5.1 km deep
Felt by 3
4.7
South Shetland Islands
06:22 UTC · 9.6 km deep
4.7
120 km SE of Sand Point, Alaska
05:36 UTC · 35.5 km deep
4.5
174 km S of Kroya, Indonesia
21:38 UTC · 37.1 km deep
Felt by 1
4.5
53 km E of Leh, India
16:59 UTC · 10.0 km deep
Earthquake Map — October 31, 2020
All Earthquakes — October 31, 2020
Showing 30 of 130 (filtered from 306)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-10-31 2020-10-31 23:44:44 UTC | 2.6ml | 192 km SSE of Sand Point, Alaska 53.662°, -159.745° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 192 km SSE of Sand Point, Alaska at 23:44 UTC on October 31, 2020. It arrived roughly 20 hours after a larger magnitude 4.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 23:36:54 UTC | 2.1md | 7 km ENE of P?hala, Hawaii 19.228°, -155.413° | 32.1 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.1 earthquake 7 km ENE of P?hala, Hawaii at 23:36 UTC on October 31, 2020. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 5 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 23:21:31 UTC | 2.5ml | 6 km S of Volcano, Hawaii 19.384°, -155.239° | 1.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 6 km S of Volcano, Hawaii came in on October 31, 2020 at 23:21 UTC. It arrived roughly 20 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2020-10-31 2020-10-31 23:17:32 UTC | 2.1md | 8 km ENE of P?hala, Hawaii 19.238°, -155.407° | 31.2 km | - | - | - | Auto | USGS → |
On October 31, 2020, worldwide seismic activity registered a magnitude 2.1 earthquake 8 km ENE of P?hala, Hawaii at 23:17 UTC. It arrived roughly 5 hours after a larger magnitude 2.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 23:00:23 UTC | 2.9ml | 98 km W of Akhiok, AK 56.990°, -155.782° | 53.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 98 km W of Akhiok, AK came in on October 31, 2020 at 23:00 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 22:29:53 UTC | 2.2ml | 92.8 km NNW of Sand Point, AK 54.630°, -159.731° | 25.7 km | - | - | - | ✓ Reviewed | USGS → |
On October 31, 2020 at 22:29 UTC, a magnitude 2.2 earthquake struck near 92.8 km NNW of Sand Point, AK. Coming 13 hours after a magnitude 4.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 22:05:43 UTC | 4.0mb | 4 km NNE of Kokkári, Greece 37.820°, 26.912° | 15.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.0 earthquake 4 km NNE of Kokkári, Greece came in on October 31, 2020 at 22:05 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 17 hours earlier. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 22:03:58 UTC | 2.9ml | 93 km SSE of Sand Point, Alaska 54.631°, -159.705° | 21.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 93 km SSE of Sand Point, Alaska on October 31, 2020 at 22:03 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.0 earthquake that occurred about 13 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 21:50:27 UTC | 2.8ml | 99 km SSE of Sand Point, Alaska 54.578°, -159.673° | 26.6 km | - | - | - | ✓ Reviewed | USGS → |
At 21:50 UTC on October 31, 2020, a magnitude 2.8 tremor occurred 99 km SSE of Sand Point, Alaska. This event falls inside the aftershock decay of a nearby magnitude 4.1 earthquake that occurred about 21 hours earlier. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 21:42:45 UTC | 2.3ml | 88.3 km NNW of Sand Point, AK 54.654°, -159.796° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded near 88.3 km NNW of Sand Point, AK on October 31, 2020 at 21:42 UTC. Coming 13 hours after a magnitude 4.0 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. | ||||||||
2020-10-31 2020-10-31 21:41:43 UTC | 2.1md | 6km E of Redwood Valley, CA 39.257°, -123.133° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 6km E of Redwood Valley, CA on October 31, 2020 at 21:41 UTC. 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. | ||||||||
2020-10-31 2020-10-31 21:38:01 UTC | 4.5mb | 174 km S of Kroya, Indonesia -9.187°, 108.976° | 37.1 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected 174 km S of Kroya, Indonesia on October 31, 2020, with origin time 21:38 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 21:28:47 UTC | 4.3mb | 180 km SSE of Kadzhi-Say, Kyrgyzstan 40.623°, 77.943° | 13.1 km | - | - | - | ✓ Reviewed | USGS → |
October 31, 2020 brought a magnitude 4.3 earthquake 180 km SSE of Kadzhi-Say, Kyrgyzstan, logged at 21:28 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 21:22:53 UTC | 4.3mb | 204 km ENE of Olonkinbyen, Svalbard and Jan Mayen 71.439°, -3.260° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 31, 2020 at 21:22 UTC, a magnitude 4.3 earthquake struck 204 km ENE of Olonkinbyen, Svalbard and Jan Mayen. Coming 17 hours after a magnitude 4.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 21:04:03 UTC | 5.1mb | South Sandwich Islands region -55.734°, -27.109° | 19.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded in the South Sandwich Islands region on October 31, 2020 at 21:04 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 20:59:16 UTC | 4.4mb | 109 km SSW of La Esperanza (El Zapotal), Mexico 14.591°, -93.677° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 109 km SSW of La Esperanza (El Zapotal), Mexico on October 31, 2020, with origin time 20:59 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 20:57:23 UTC | 3.0ml | 24km NNW of Tehachapi, CA 35.339°, -118.508° | 3.6 km | 7 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 24km NNW of Tehachapi, CA with origin time 20:57 UTC on October 31, 2020. 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. | ||||||||
2020-10-31 2020-10-31 20:50:39 UTC | 2.8ml | 191 km SSE of Sand Point, Alaska 53.663°, -159.819° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 191 km SSE of Sand Point, Alaska at 20:50 UTC on October 31, 2020. Coming 18 hours after a magnitude 4.3 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. | ||||||||
2020-10-31 2020-10-31 20:22:54 UTC | 3.1md | 23 km SW of Esperanza, Puerto Rico 17.934°, -65.615° | 3.0 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 23 km SW of Esperanza, Puerto Rico came in on October 31, 2020 at 20:22 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. | ||||||||
2020-10-31 2020-10-31 20:01:36 UTC | 2.9ml | 226 km S of Sand Point, Alaska 53.316°, -160.090° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 31, 2020 brought a magnitude 2.9 earthquake 226 km S of Sand Point, Alaska, logged at 20:01 UTC. Coming 10 hours after a magnitude 3.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 19:49:37 UTC | 2.9ml | 13km NW of Morongo Valley, CA 34.113°, -116.695° | 2.4 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.9 earthquake 13km NW of Morongo Valley, CA with origin time 19:49 UTC on October 31, 2020. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 19:44:24 UTC | 2.4ml | 127.4 km NNW of Sand Point, AK 54.312°, -159.617° | 25.5 km | - | - | - | ✓ Reviewed | USGS → |
October 31, 2020 brought a magnitude 2.4 earthquake near 127.4 km NNW of Sand Point, AK, logged at 19:44 UTC. Coming 19 hours after a magnitude 4.1 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. | ||||||||
2020-10-31 2020-10-31 19:30:15 UTC | 3.2ml | 42 km ESE of Nikolski, Alaska 52.774°, -168.293° | 50.5 km | - | - | - | ✓ Reviewed | USGS → |
At 19:30 UTC on October 31, 2020, a magnitude 3.2 tremor occurred 42 km ESE of Nikolski, Alaska. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 19:22:35 UTC | 2.0md | 19km SE of Yosemite Valley, CA 37.642°, -119.397° | 9.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 19km SE of Yosemite Valley, CA on October 31, 2020, with origin time 19:22 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 19:14:39 UTC | 2.3ml | 115 km SSE of Sand Point, Alaska 54.370°, -159.827° | 21.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 115 km SSE of Sand Point, Alaska with origin time 19:14 UTC on October 31, 2020. It arrived roughly 14 hours after a larger magnitude 4.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 18:54:30 UTC | 2.2ml | 96.7 km NNW of Sand Point, AK 54.553°, -159.848° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded near 96.7 km NNW of Sand Point, AK on October 31, 2020 at 18:54 UTC. It arrived roughly 14 hours after a larger magnitude 4.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 18:53:24 UTC | 2.4ml | 22km NW of Ludlow, CA 34.860°, -116.339° | 5.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 22km NW of Ludlow, CA came in on October 31, 2020 at 18:53 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 18:51:49 UTC | 4.2mb | 106 km ESE of Copiapó, Chile -27.886°, -69.421° | 114.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 106 km ESE of Copiapó, Chile on October 31, 2020, with origin time 18:51 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 18:43:10 UTC | 4.2mb | 129 km E of Nagqu, China 31.703°, 93.400° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 129 km E of Nagqu, China came in on October 31, 2020 at 18:43 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-31 2020-10-31 18:34:06 UTC | 2.1md | 6 km WSW of Fuig, Puerto Rico 17.964°, -66.976° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 6 km WSW of Fuig, Puerto Rico came in on October 31, 2020 at 18:34 UTC. It arrived roughly 10 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 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 31, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.