Earthquakes on October 31, 2021
269
EARTHQUAKES on October 31, 2021
24-hour UTC period · USGS data
25 km deep · 5 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
41
M3.0–3.9
14
M2.0–2.9
54
M1.0–1.9
157
Activity Summary
269
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.6
115 km SSE of Perryville, Alaska
16:37 UTC · 25.0 km deep
Felt by 5
5.2
8 km NNW of Funaishikawa, Japan
21:14 UTC · 55.3 km deep
Felt by 180
5.1
Kermadec Islands region
09:18 UTC · 56.1 km deep
4.9
southeast of the Loyalty Islands
12:32 UTC · 121.1 km deep
4.9
Kermadec Islands region
00:48 UTC · 10.0 km deep
4.7
24 km SW of Kushimoto, Japan
20:35 UTC · 10.0 km deep
Felt by 4
4.7
150 km SW of Buala, Solomon Islands
02:55 UTC · 32.4 km deep
4.6
southern East Pacific Rise
22:01 UTC · 10.0 km deep
Earthquake Map — October 31, 2021
All Earthquakes — October 31, 2021
Showing 30 of 112 (filtered from 269)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-31 2021-10-31 23:47:49 UTC | 4.4mb | 235 km E of Levuka, Fiji -17.942°, -178.463° | 570.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 31, 2021, worldwide seismic activity registered a magnitude 4.4 earthquake 235 km E of Levuka, Fiji at 23:47 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:39:39 UTC | 4.4mb | south of the Fiji Islands -25.319°, 179.163° | 496.5 km | - | - | - | ✓ Reviewed | USGS → |
At 23:39 UTC on October 31, 2021, a magnitude 4.4 tremor occurred south of the Fiji Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:27:25 UTC | 4.2mb | 22 km NE of Hachinohe, Japan 40.621°, 141.710° | 90.6 km | - | - | - | ✓ Reviewed | USGS → |
On October 31, 2021 at 23:27 UTC, a magnitude 4.2 earthquake struck 22 km NE of Hachinohe, Japan. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:12:16 UTC | 3.1ml | 7 km E of P?hala, Hawaii 19.215°, -155.411° | 33.2 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 7 km E of P?hala, Hawaii at 23:12 UTC on October 31, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 9 hours earlier. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:11:48 UTC | 2.0ml | 77 km S of Unalaska, Alaska 53.188°, -166.735° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 77 km S of Unalaska, Alaska on October 31, 2021, with origin time 23:11 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 10 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:00:56 UTC | 2.4ml | 29 km NW of Stanley, Idaho 44.371°, -115.236° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 29 km NW of Stanley, Idaho on October 31, 2021 at 23:00 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 23:00:16 UTC | 2.1ml | 37 km SSW of Los Ybanez, Texas 32.423°, -102.121° | 9.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 37 km SSW of Los Ybanez, Texas on October 31, 2021, with origin time 23:00 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 22:51:28 UTC | 2.0md | 4 km S of P?hala, Hawaii 19.166°, -155.480° | 33.8 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.0 earthquake 4 km S of P?hala, Hawaii at 22:51 UTC on October 31, 2021. It arrived roughly 8 hours after a larger magnitude 3.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 22:25:49 UTC | 3.1ml | 188 km SE of Chiniak, Alaska 56.493°, -149.942° | 22.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 188 km SE of Chiniak, Alaska on October 31, 2021 at 22:25 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 22:15:22 UTC | 2.9ml | 15 km WNW of Big Spring, Texas 32.317°, -101.626° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 15 km WNW of Big Spring, Texas on October 31, 2021 at 22:15 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 22:05:25 UTC | 2.3ml | 76 km E of Denali Park, Alaska 63.632°, -147.394° | 80.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 76 km E of Denali Park, Alaska on October 31, 2021 at 22:05 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 22:01:43 UTC | 4.6mb | southern East Pacific Rise -20.773°, -114.304° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake near southern East Pacific Rise came in on October 31, 2021 at 22:01 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 21:45:32 UTC | 3.1ml | 246 km W of Adak, Alaska 51.899°, 179.791° | 164.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 246 km W of Adak, Alaska with origin time 21:45 UTC on October 31, 2021. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 21:29:25 UTC | 2.5ml | 28 km NNE of Petersville, Alaska 62.737°, -150.593° | 79.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 28 km NNE of Petersville, Alaska on October 31, 2021 at 21:29 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 21:14:55 UTC | 2.0ml | 62 km WNW of Anchor Point, Alaska 59.951°, -152.884° | 105.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 62 km WNW of Anchor Point, Alaska came in on October 31, 2021 at 21:14 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 21:14:47 UTC | 5.2mww | 8 km NNW of Funaishikawa, Japan 36.534°, 140.528° | 55.3 km | 180 | - | - | ✓ Reviewed | USGS → |
A magnitude 5.2 earthquake was recorded 8 km NNW of Funaishikawa, Japan on October 31, 2021 at 21:14 UTC. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 20:50:27 UTC | 2.2md | 4 km SE of P?hala, Hawaii 19.173°, -155.455° | 37.4 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 4 km SE of P?hala, Hawaii came in on October 31, 2021 at 20:50 UTC. It arrived roughly 6 hours after a larger magnitude 3.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 20:40:04 UTC | 4.3mb | 5 km SE of Pýrgos, Greece 34.963°, 25.188° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 31, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake 5 km SE of Pýrgos, Greece at 20:40 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 20:35:40 UTC | 4.7mwr | 24 km SW of Kushimoto, Japan 33.292°, 135.628° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.7 earthquake 24 km SW of Kushimoto, Japan at 20:35 UTC on October 31, 2021. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 20:20:02 UTC | 2.0ml | 7 km NNW of Nordheim, Texas 28.982°, -97.638° | 4.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 7 km NNW of Nordheim, Texas on October 31, 2021 at 20:20 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. | ||||||||
2021-10-31 2021-10-31 20:00:56 UTC | 2.2ml | 10km NE of Coso Junction, CA 36.103°, -117.856° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 10km NE of Coso Junction, CA at 20:00 UTC on October 31, 2021. 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. | ||||||||
2021-10-31 2021-10-31 19:51:50 UTC | 4.1mb | 88 km ESE of Korsakov, Russia 46.315°, 143.839° | 342.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 88 km ESE of Korsakov, Russia came in on October 31, 2021 at 19:51 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 19:36:12 UTC | 4.2mb | 119 km W of Castelo Branco, Portugal 38.694°, -30.063° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 119 km W of Castelo Branco, Portugal on October 31, 2021 at 19:36 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 19:18:42 UTC | 4.2mb | Volcano Islands, Japan region 22.268°, 143.474° | 136.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake in the Volcano Islands, Japan region with origin time 19:18 UTC on October 31, 2021. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 19:07:19 UTC | 3.0ml | 159 km SSW of Akhiok, Alaska 55.718°, -155.490° | 3.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 159 km SSW of Akhiok, Alaska on October 31, 2021, with origin time 19:07 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. | ||||||||
2021-10-31 2021-10-31 18:49:39 UTC | 2.1ml | 113 km ESE of Akutan, Alaska 53.850°, -164.108° | 51.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 113 km ESE of Akutan, Alaska came in on October 31, 2021 at 18:49 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 18:36:18 UTC | 2.6ml | 106 km SSE of Sand Point, Alaska 54.461°, -159.809° | 18.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 106 km SSE of Sand Point, Alaska on October 31, 2021, with origin time 18:36 UTC. It arrived roughly 4 hours after a larger magnitude 3.1 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. | ||||||||
2021-10-31 2021-10-31 18:29:02 UTC | 2.1md | 5km NW of Walker, CA 38.545°, -119.528° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 5km NW of Walker, CA on October 31, 2021 at 18:29 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. | ||||||||
2021-10-31 2021-10-31 18:16:55 UTC | 2.3ml | 200 km SW of Yakutat, Alaska 58.565°, -142.652° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 31, 2021 brought a magnitude 2.3 earthquake 200 km SW of Yakutat, Alaska, logged at 18:16 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-31 2021-10-31 18:03:56 UTC | 2.0ml | 22 km WSW of Coyanosa, Texas 31.175°, -103.288° | 2.6 km | - | - | - | ✓ Reviewed | USGS → |
October 31, 2021 brought a magnitude 2.0 earthquake 22 km WSW of Coyanosa, Texas, logged at 18:03 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. | ||||||||
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, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.