Earthquakes on October 6, 2021
296
EARTHQUAKES on October 6, 2021
24-hour UTC period · USGS data
LARGEST: M5.9 — 11 km NNE of Harnai, Pakistan
9 km deep · 46 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
27
M3.0–3.9
9
M2.0–2.9
75
M1.0–1.9
181
Activity Summary
296
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.9
11 km NNE of Harnai, Pakistan
22:01 UTC · 9.0 km deep
Felt by 46
5.4
81 km NE of Hihifo, Tonga
15:54 UTC · 35.0 km deep
Felt by 4
5.4
39 km SE of Kushima, Japan
08:12 UTC · 24.5 km deep
Felt by 13
5.0
14 km N of El Galpón, Argentina
23:38 UTC · 10.0 km deep
Felt by 6
4.9
10 km E of Otok, Croatia
19:57 UTC · 10.0 km deep
Felt by 26
4.6
60 km E of Madang, Papua New Guinea
22:44 UTC · 10.0 km deep
4.6
118 km SSW of Severo-Kuril’sk, Russia
13:06 UTC · 83.3 km deep
4.6
85 km SSW of Panguna, Papua New Guinea
10:47 UTC · 35.0 km deep
Earthquake Map — October 6, 2021
All Earthquakes — October 6, 2021
Showing 30 of 115 (filtered from 296)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-06 2021-10-06 23:56:41 UTC | 3.9mb | 246 km WSW of Adak, Alaska 51.015°, -179.895° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.9 earthquake was recorded 246 km WSW of Adak, Alaska on October 6, 2021 at 23:56 UTC. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 23:40:21 UTC | 4.4mb | 97 km NNE of Tobelo, Indonesia 2.577°, 128.233° | 179.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 97 km NNE of Tobelo, Indonesia at 23:40 UTC on October 6, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 23:38:08 UTC | 5.0mb | 14 km N of El Galpón, Argentina -25.248°, -64.629° | 10.0 km | 6 | - | - | ✓ Reviewed | USGS → |
On October 6, 2021, worldwide seismic activity registered a magnitude 5.0 earthquake 14 km N of El Galpón, Argentina at 23:38 UTC. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 23:35:03 UTC | 2.6ml | 13 km NW of Stanley, Idaho 44.303°, -115.055° | 12.5 km | 1 | - | - | ✓ Reviewed | USGS → |
On October 6, 2021, worldwide seismic activity registered a magnitude 2.6 earthquake 13 km NW of Stanley, Idaho at 23:35 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 23:06:19 UTC | 2.5ml | 6 km ENE of P?hala, Hawaii 19.216°, -155.415° | 35.7 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021 at 23:06 UTC, a magnitude 2.5 earthquake struck 6 km ENE of P?hala, Hawaii. It arrived roughly 16 hours after a larger magnitude 4.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 23:05:34 UTC | 2.2ml | 34 km E of Pedro Bay, Alaska 59.845°, -153.506° | 137.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 34 km E of Pedro Bay, Alaska on October 6, 2021 at 23:05 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 22:44:58 UTC | 4.6mb | 60 km E of Madang, Papua New Guinea -5.122°, 146.321° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake 60 km E of Madang, Papua New Guinea at 22:44 UTC on October 6, 2021. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 22:26:11 UTC | 2.1ml | 6 km ENE of P?hala, Hawaii 19.219°, -155.422° | 33.6 km | - | - | - | Auto | USGS → |
At 22:26 UTC on October 6, 2021, a magnitude 2.1 tremor occurred 6 km ENE of P?hala, Hawaii. Coming 16 hours after a magnitude 4.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 22:01:08 UTC | 5.9mww | 11 km NNE of Harnai, Pakistan 30.193°, 67.995° | 9.0 km | 46 | VII | yellow | ✓ Reviewed | USGS → |
On October 6, 2021 at 22:01 UTC, a magnitude 5.9 earthquake struck 11 km NNE of Harnai, Pakistan. The USGS PAGER system assigned a yellow alert level for this event, signalling local impact possible. It is the largest earthquake currently listed for worldwide seismic activity on October 6, 2021. See the M5.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 21:25:31 UTC | 2.3ml | 9 km ENE of P?hala, Hawaii 19.225°, -155.387° | 32.3 km | - | - | - | Auto | USGS → |
October 6, 2021 brought a magnitude 2.3 earthquake 9 km ENE of P?hala, Hawaii, logged at 21:25 UTC. It arrived roughly 15 hours after a larger magnitude 4.5 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. | ||||||||
2021-10-06 2021-10-06 21:06:23 UTC | 2.0md | 31km ENE of Dardanelle, CA 38.492°, -119.536° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 31km ENE of Dardanelle, CA came in on October 6, 2021 at 21:06 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. | ||||||||
2021-10-06 2021-10-06 21:06:06 UTC | 3.3ml | 29 km WSW of Birney, Montana 45.191°, -106.844° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.3 earthquake 29 km WSW of Birney, Montana at 21:06 UTC on October 6, 2021. 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. | ||||||||
2021-10-06 2021-10-06 20:59:32 UTC | 2.1ml | 27 km SSE of Mina, Nevada 38.150°, -118.022° | 3.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 27 km SSE of Mina, Nevada on October 6, 2021, with origin time 20:59 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. | ||||||||
2021-10-06 2021-10-06 20:59:03 UTC | 2.2ml | 22 km NW of Stanley, Idaho 44.339°, -115.171° | 5.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 22 km NW of Stanley, Idaho on October 6, 2021 at 20:59 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:57:29 UTC | 2.6ml | 28 km NW of Stanley, Idaho 44.364°, -115.237° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 20:57 UTC on October 6, 2021, a magnitude 2.6 tremor occurred 28 km NW of Stanley, Idaho. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:56:16 UTC | 2.6ml | 4 km ENE of P?hala, Hawaii 19.218°, -155.438° | 33.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 4 km ENE of P?hala, Hawaii with origin time 20:56 UTC on October 6, 2021. This event falls inside the aftershock decay of a nearby magnitude 4.5 earthquake that occurred about 14 hours earlier. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:49:35 UTC | 2.3ml | 23 km NW of Stanley, Idaho 44.344°, -115.169° | 9.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 23 km NW of Stanley, Idaho at 20:49 UTC on October 6, 2021. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:46:34 UTC | 2.3ml | western Texas 31.718°, -103.840° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021 at 20:46 UTC, a magnitude 2.3 earthquake struck near western Texas. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:41:17 UTC | 4.5mb | southeast of the Loyalty Islands -22.958°, 173.061° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 6, 2021 brought a magnitude 4.5 earthquake southeast of the Loyalty Islands, logged at 20:41 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:26:31 UTC | 2.7ml | 2 km SSW of P?hala, Hawaii 19.185°, -155.484° | 37.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 earthquake was recorded 2 km SSW of P?hala, Hawaii on October 6, 2021 at 20:26 UTC. It arrived roughly 14 hours after a larger magnitude 4.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 20:20:56 UTC | 2.0ml | 8km W of Holtville, CA 32.813°, -115.465° | 10.7 km | - | - | - | ✓ Reviewed | USGS → |
October 6, 2021 brought a magnitude 2.0 earthquake 8km W of Holtville, CA, logged at 20:20 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 19:57:33 UTC | 4.9mb | 10 km E of Otok, Croatia 43.681°, 16.858° | 10.0 km | 26 | - | - | ✓ Reviewed | USGS → |
At 19:57 UTC on October 6, 2021, a magnitude 4.9 tremor occurred 10 km E of Otok, Croatia. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 19:55:30 UTC | 2.9ml | 51 km W of Anchor Point, Alaska 59.716°, -152.735° | 85.9 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021 at 19:55 UTC, a magnitude 2.9 earthquake struck 51 km W of Anchor Point, Alaska. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 19:34:50 UTC | 2.8ml | Fox Islands, Aleutian Islands, Alaska 51.862°, -171.007° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021, worldwide seismic activity registered a magnitude 2.8 earthquake near Fox Islands, Aleutian Islands, Alaska at 19:34 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 19:31:26 UTC | 2.9ml | 9 km ENE of P?hala, Hawaii 19.228°, -155.393° | 32.9 km | 2 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.9 earthquake 9 km ENE of P?hala, Hawaii with origin time 19:31 UTC on October 6, 2021. It arrived roughly 13 hours after a larger magnitude 4.5 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. | ||||||||
2021-10-06 2021-10-06 19:15:14 UTC | 4.3mb | 68 km NNW of Isangel, Vanuatu -18.969°, 169.036° | 171.8 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021 at 19:15 UTC, a magnitude 4.3 earthquake struck 68 km NNW of Isangel, Vanuatu. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 19:09:09 UTC | 3.6mb | 33 km SSW of Atka, Alaska 51.902°, -174.296° | 75.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.6 earthquake 33 km SSW of Atka, Alaska with origin time 19:09 UTC on October 6, 2021. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 18:55:21 UTC | 2.4ml | 8 km ENE of P?hala, Hawaii 19.227°, -155.397° | 32.0 km | - | - | - | Auto | USGS → |
A magnitude 2.4 earthquake was recorded 8 km ENE of P?hala, Hawaii on October 6, 2021 at 18:55 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.5 earthquake that occurred about 12 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 18:51:33 UTC | 2.5ml | 60 km S of Cordova, Alaska 60.001°, -145.726° | 21.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 60 km S of Cordova, Alaska on October 6, 2021, with origin time 18:51 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-06 2021-10-06 18:21:32 UTC | 2.7ml | 34 km E of Red Dog Mine, Alaska 68.022°, -162.062° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 6, 2021 at 18:21 UTC, a magnitude 2.7 earthquake struck 34 km E of Red Dog Mine, Alaska. Coming 1 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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 6, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.