Earthquakes on October 21, 2024
260
EARTHQUAKES on October 21, 2024
24-hour UTC period · USGS data
LARGEST: M5.8 — 61 km S of Labuha, Indonesia
16 km deep · 1 person felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
37
M3.0–3.9
7
M2.0–2.9
46
M1.0–1.9
163
Activity Summary
260
Total earthquakes
~250
Daily average
Normal
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.8
61 km S of Labuha, Indonesia
03:24 UTC · 16.0 km deep
Felt by 1
5.6
63 km SSW of Labuha, Indonesia
06:32 UTC · 10.0 km deep
5.1
52 km S of Labuha, Indonesia
04:12 UTC · 10.0 km deep
5.0
57 km S of Labuha, Indonesia
08:35 UTC · 10.0 km deep
5.0
71 km SSW of Labuha, Indonesia
08:24 UTC · 10.0 km deep
5.0
62 km SSW of Labuha, Indonesia
08:08 UTC · 10.0 km deep
5.0
51 km WSW of Attu Station, Alaska
05:35 UTC · 39.7 km deep
Felt by 2
4.8
55 km SSW of Labuha, Indonesia
04:10 UTC · 10.0 km deep
Earthquake Map — October 21, 2024
All Earthquakes — October 21, 2024
Showing 30 of 97 (filtered from 260)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2024-10-21 2024-10-21 23:24:13 UTC | 2.2md | 2 km SSW of Pāhala, Hawaii 19.186°, -155.485° | 31.2 km | - | - | - | Auto | USGS → |
At 23:24 UTC on October 21, 2024, a magnitude 2.2 tremor occurred 2 km SSW of Pāhala, Hawaii. It arrived roughly 20 hours after a larger magnitude 2.6 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. | ||||||||
2024-10-21 2024-10-21 23:10:09 UTC | 2.4ml | 28 km WNW of Ivanof Bay, Alaska 56.018°, -159.885° | 108.7 km | - | - | - | ✓ Reviewed | USGS → |
At 23:10 UTC on October 21, 2024, a magnitude 2.4 tremor occurred 28 km WNW of Ivanof Bay, Alaska. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 22:40:03 UTC | 4.1mb | 147 km SE of Kuqa, China 40.732°, 84.116° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 147 km SE of Kuqa, China came in on October 21, 2024 at 22:40 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 22:35:36 UTC | 3.8mb | 211 km SSE of Atka, Alaska 50.359°, -173.407° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:35 UTC on October 21, 2024, a magnitude 3.8 tremor occurred 211 km SSE of Atka, Alaska. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 22:33:30 UTC | 4.2mb | 75 km SSW of Labuha, Indonesia -1.234°, 127.162° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024 at 22:33 UTC, a magnitude 4.2 earthquake struck 75 km SSW of Labuha, Indonesia. It arrived roughly 16 hours after a larger magnitude 5.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 21:30:42 UTC | 2.2ml | 80 km E of Nikolski, Alaska 52.963°, -167.672° | 48.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 80 km E of Nikolski, Alaska at 21:30 UTC on October 21, 2024. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 21:21:45 UTC | 2.8ml | 82 km SSW of Unalaska, Alaska 53.228°, -167.134° | 58.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 82 km SSW of Unalaska, Alaska with origin time 21:21 UTC on October 21, 2024. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 21:12:09 UTC | 4.3mb | 157 km NE of Maumere, Indonesia -7.828°, 123.400° | 280.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 157 km NE of Maumere, Indonesia on October 21, 2024, with origin time 21:12 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 20:59:15 UTC | 4.2mb | 114 km S of Vrangel’, Russia 41.699°, 133.136° | 477.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 114 km S of Vrangel’, Russia on October 21, 2024 at 20:59 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 20:25:35 UTC | 4.7mb | 216 km E of Levuka, Fiji -17.773°, -178.663° | 556.6 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2024 brought a magnitude 4.7 earthquake 216 km E of Levuka, Fiji, logged at 20:25 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 20:01:42 UTC | 3.2ml | 22 km NE of Wright, Wyoming 43.870°, -105.266° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake 22 km NE of Wright, Wyoming came in on October 21, 2024 at 20:01 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 19:22:50 UTC | 4.5mb | 52 km S of Labuha, Indonesia -1.101°, 127.443° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 52 km S of Labuha, Indonesia came in on October 21, 2024 at 19:22 UTC. Coming 16 hours after a magnitude 5.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 19:09:58 UTC | 2.8ml | 16 km SE of Wright, Wyoming 43.633°, -105.372° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024, worldwide seismic activity registered a magnitude 2.8 earthquake 16 km SE of Wright, Wyoming at 19:09 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 19:04:46 UTC | 2.2ml | 14 km N of Nanwalek, Alaska 59.488°, -151.961° | 53.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 14 km N of Nanwalek, Alaska on October 21, 2024, with origin time 19:04 UTC. Coming 1 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 18:39:21 UTC | 2.6ml | 12 km N of Nanwalek, Alaska 59.465°, -151.943° | 54.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 12 km N of Nanwalek, Alaska with origin time 18:39 UTC on October 21, 2024. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 18:29:06 UTC | 2.5ml | 25 km S of Chiniak, Alaska 57.382°, -152.240° | 38.6 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2024 brought a magnitude 2.5 earthquake 25 km S of Chiniak, Alaska, logged at 18:29 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 18:17:33 UTC | 2.8ml | 49 km E of Atka, Alaska 52.202°, -173.478° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:17 UTC on October 21, 2024, a magnitude 2.8 tremor occurred 49 km E of Atka, Alaska. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 18:07:25 UTC | 4.0mb | Rat Islands, Aleutian Islands, Alaska 50.592°, 178.562° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2024 brought a magnitude 4.0 earthquake near Rat Islands, Aleutian Islands, Alaska, logged at 18:07 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 17:28:47 UTC | 2.2md | 2 km NNE of Almanor, CA 40.230°, -121.174° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
October 21, 2024 brought a magnitude 2.2 earthquake 2 km NNE of Almanor, CA, logged at 17:28 UTC. Coming 4 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2024-10-21 2024-10-21 17:07:56 UTC | 2.3ml | 62 km SW of Nanwalek, Alaska 59.027°, -152.796° | 64.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 62 km SW of Nanwalek, Alaska came in on October 21, 2024 at 17:07 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 17:03:24 UTC | 2.9ml | 128 km S of Unalaska, Alaska 52.725°, -166.681° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 128 km S of Unalaska, Alaska on October 21, 2024 at 17:03 UTC. It arrived roughly 14 hours after a larger magnitude 4.0 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. | ||||||||
2024-10-21 2024-10-21 16:36:12 UTC | 2.6ml | 133 km WSW of Adak, Alaska 51.252°, -178.288° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024, worldwide seismic activity registered a magnitude 2.6 earthquake 133 km WSW of Adak, Alaska at 16:36 UTC. It arrived roughly 7 hours after a larger magnitude 2.8 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. | ||||||||
2024-10-21 2024-10-21 16:11:14 UTC | 2.6md | 2 km SE of Magas Arriba, Puerto Rico 18.000°, -66.755° | 13.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 2 km SE of Magas Arriba, Puerto Rico on October 21, 2024 at 16:11 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 16:08:43 UTC | 2.7ml | 95 km S of False Pass, Alaska 53.999°, -163.249° | 26.8 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024 at 16:08 UTC, a magnitude 2.7 earthquake struck 95 km S of False Pass, Alaska. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 16:02:44 UTC | 4.6mb | 267 km ENE of Levuka, Fiji -17.502°, -178.227° | 535.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded 267 km ENE of Levuka, Fiji on October 21, 2024 at 16:02 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. | ||||||||
2024-10-21 2024-10-21 16:02:15 UTC | 2.2md | 18 km WSW of Toms Place, CA 37.472°, -118.844° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024, worldwide seismic activity registered a magnitude 2.2 earthquake 18 km WSW of Toms Place, CA at 16:02 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. | ||||||||
2024-10-21 2024-10-21 15:52:46 UTC | 2.5md | 6 km SW of La Parguera, Puerto Rico 17.926°, -67.083° | 10.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 6 km SW of La Parguera, Puerto Rico with origin time 15:52 UTC on October 21, 2024. It arrived roughly 7 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 15:45:49 UTC | 2.0ml | 8 km S of Sunrise, Alaska 60.810°, -149.437° | 31.9 km | - | - | - | ✓ Reviewed | USGS → |
At 15:45 UTC on October 21, 2024, a magnitude 2.0 tremor occurred 8 km S of Sunrise, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 15:15:39 UTC | 2.6ml | 6 km SSW of Houston, Alaska 61.575°, -149.871° | 31.7 km | 1 | - | - | ✓ Reviewed | USGS → |
At 15:15 UTC on October 21, 2024, a magnitude 2.6 tremor occurred 6 km SSW of Houston, Alaska. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-10-21 2024-10-21 15:15:13 UTC | 4.7mb | 59 km SSW of Labuha, Indonesia -1.154°, 127.358° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 21, 2024 at 15:15 UTC, a magnitude 4.7 earthquake struck 59 km SSW of Labuha, Indonesia. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 12 hours earlier. See the M4.7 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 21, 2024. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.