Earthquakes on September 21, 2024
280
EARTHQUAKES on September 21, 2024
24-hour UTC period · USGS data
141 km deep · 33 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
29
M3.0–3.9
14
M2.0–2.9
43
M1.0–1.9
190
Activity Summary
280
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
6.0
95 km NNW of Villa General Roca, Argentina
21:24 UTC · 141.0 km deep
Felt by 33
5.6
Kermadec Islands region
02:32 UTC · 9.0 km deep
5.4
142 km WSW of Adak, Alaska
17:21 UTC · 44.5 km deep
Felt by 5
5.0
West Chile Rise
15:17 UTC · 10.0 km deep
4.9
171 km SW of Port Blair, India
16:41 UTC · 10.0 km deep
4.8
27 km NNE of Hualien City, Taiwan
10:51 UTC · 31.6 km deep
Felt by 10
4.7
1 km NNW of Aratoca, Colombia
21:31 UTC · 157.6 km deep
4.7
8 km SSE of Vallecitos de Zaragoza, Mexico
19:54 UTC · 44.7 km deep
Felt by 1
Earthquake Map — September 21, 2024
All Earthquakes — September 21, 2024
Showing 30 of 90 (filtered from 280)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2024-09-21 2024-09-21 23:58:46 UTC | 4.6mb | 22 km N of Bojnūrd, Iran 37.678°, 57.317° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 22 km N of Bojnūrd, Iran on September 21, 2024 at 23:58 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 23:54:32 UTC | 2.4ml | 23 km NW of Eureka Roadhouse, Alaska 62.083°, -147.491° | 27.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 23 km NW of Eureka Roadhouse, Alaska on September 21, 2024, with origin time 23:54 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 23:51:49 UTC | 4.3mb | 18 km N of Bojnūrd, Iran 37.641°, 57.316° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 18 km N of Bojnūrd, Iran at 23:51 UTC on September 21, 2024. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 23:01:54 UTC | 4.0md | 27 km ESE of Boca de Yuma, Dominican Republic 18.295°, -68.359° | 87.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024, worldwide seismic activity registered a magnitude 4.0 earthquake 27 km ESE of Boca de Yuma, Dominican Republic at 23:01 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 22:38:44 UTC | 2.9md | 36 km N of Brenas, Puerto Rico 18.793°, -66.386° | 38.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.9 earthquake 36 km N of Brenas, Puerto Rico with origin time 22:38 UTC on September 21, 2024. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 22:24:52 UTC | 3.0ml | Rat Islands, Aleutian Islands, Alaska 51.486°, 177.843° | 53.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake near Rat Islands, Aleutian Islands, Alaska with origin time 22:24 UTC on September 21, 2024. It arrived roughly 19 hours after a larger magnitude 4.0 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. | ||||||||
2024-09-21 2024-09-21 22:12:40 UTC | 4.5mb | south of the Fiji Islands -24.019°, -176.724° | 80.3 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024 at 22:12 UTC, a magnitude 4.5 earthquake struck south of the Fiji Islands. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 22:12:02 UTC | 2.0ml | 9 km E of Pāhala, Hawaii 19.216°, -155.392° | 34.0 km | - | - | - | Auto | USGS → |
At 22:12 UTC on September 21, 2024, a magnitude 2.0 tremor occurred 9 km E of Pāhala, Hawaii. It arrived roughly 1 hours after a larger magnitude 2.0 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. | ||||||||
2024-09-21 2024-09-21 22:01:30 UTC | 2.0md | 10 km ENE of Pāhala, Hawaii 19.254°, -155.396° | 29.5 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.0 earthquake 10 km ENE of Pāhala, Hawaii with origin time 22:01 UTC on September 21, 2024. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 22:00:50 UTC | 4.1mb | 193 km NW of Neiafu, Tonga -17.472°, -175.333° | 246.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.1 earthquake 193 km NW of Neiafu, Tonga at 22:00 UTC on September 21, 2024. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 21:31:52 UTC | 4.7mb | 1 km NNW of Aratoca, Colombia 6.706°, -73.022° | 157.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 1 km NNW of Aratoca, Colombia on September 21, 2024, with origin time 21:31 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 21:24:28 UTC | 6.0mww | 95 km NNW of Villa General Roca, Argentina -31.891°, -66.887° | 141.0 km | 33 | IV | green | ✓ Reviewed | USGS → |
On September 21, 2024 at 21:24 UTC, a magnitude 6.0 earthquake struck 95 km NNW of Villa General Roca, Argentina. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on September 21, 2024. See the M6.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 21:15:33 UTC | 2.0ml | 5 km SSE of Princeton, Canada 49.413°, -120.489° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024, worldwide seismic activity registered a magnitude 2.0 earthquake 5 km SSE of Princeton, Canada at 21:15 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. | ||||||||
2024-09-21 2024-09-21 21:15:21 UTC | 3.1ml | 6 km NNE of Malibu, CA 34.054°, -118.796° | 10.4 km | 168 | II | - | ✓ Reviewed | USGS → |
On September 21, 2024 at 21:15 UTC, a magnitude 3.1 earthquake struck 6 km NNE of Malibu, CA. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 21:13:23 UTC | 4.3mb | 34 km SSE of Honchō, Japan 41.855°, 143.126° | 86.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 34 km SSE of Honchō, Japan on September 21, 2024, with origin time 21:13 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 20:29:30 UTC | 2.9ml | 147 km WSW of Adak, Alaska 51.191°, -178.462° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
September 21, 2024 brought a magnitude 2.9 earthquake 147 km WSW of Adak, Alaska, logged at 20:29 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.4 earthquake that occurred about 3 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 20:23:01 UTC | 4.1mb | Banda Sea -6.048°, 129.730° | 244.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected near Banda Sea on September 21, 2024, with origin time 20:23 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 20:07:47 UTC | 3.2ml | 118 km SSE of Sand Point, Alaska 54.394°, -159.639° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place 118 km SSE of Sand Point, Alaska on September 21, 2024 at 20:07 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 20:07:27 UTC | 2.3ml | 7 km ENE of Ensenada, B.C., MX 31.897°, -116.557° | 12.9 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 21, 2024 at 20:07 UTC, a magnitude 2.3 earthquake struck 7 km ENE of Ensenada, B.C., MX. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 20:07:23 UTC | 4.2mb | southeast of the Loyalty Islands -21.943°, 171.127° | 115.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded southeast of the Loyalty Islands on September 21, 2024 at 20:07 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 19:54:40 UTC | 4.7mb | 8 km SSE of Vallecitos de Zaragoza, Mexico 17.844°, -101.306° | 44.7 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake 8 km SSE of Vallecitos de Zaragoza, Mexico came in on September 21, 2024 at 19:54 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 19:52:31 UTC | 4.2mb | 268 km E of Levuka, Fiji -18.114°, -178.143° | 509.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 268 km E of Levuka, Fiji with origin time 19:52 UTC on September 21, 2024. 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. | ||||||||
2024-09-21 2024-09-21 19:49:16 UTC | 2.6ml | 18 km SE of Naalehu, Hawaii 18.944°, -155.468° | 35.1 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024 at 19:49 UTC, a magnitude 2.6 earthquake struck 18 km SE of Naalehu, Hawaii. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 19:26:10 UTC | 2.2ml | 120 km SSE of Sand Point, Alaska 54.326°, -159.826° | 20.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 120 km SSE of Sand Point, Alaska on September 21, 2024 at 19:26 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:56:38 UTC | 2.8ml | 63 km SSW of Whites City, New Mexico 31.618°, -104.519° | 8.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024, worldwide seismic activity registered a magnitude 2.8 earthquake 63 km SSW of Whites City, New Mexico at 18:56 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:52:15 UTC | 2.7ml | 53 km SSE of Adak, Alaska 51.472°, -176.219° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 53 km SSE of Adak, Alaska on September 21, 2024, with origin time 18:52 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:48:31 UTC | 4.3mb | Mid-Indian Ridge -31.563°, 76.901° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake near Mid-Indian Ridge came in on September 21, 2024 at 18:48 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:42:21 UTC | 4.3mb | 177 km SW of Port Blair, India 10.498°, 91.635° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 177 km SW of Port Blair, India on September 21, 2024 at 18:42 UTC. It arrived roughly 2 hours after a larger magnitude 4.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:28:58 UTC | 3.0ml | 153 km WSW of Adak, Alaska 51.270°, -178.619° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 21, 2024, worldwide seismic activity registered a magnitude 3.0 earthquake 153 km WSW of Adak, Alaska at 18:28 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.4 earthquake that occurred about 1 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-09-21 2024-09-21 18:23:38 UTC | 4.1mb | 63 km E of Petropavlovsk-Kamchatsky, Russia 53.168°, 159.559° | 75.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 63 km E of Petropavlovsk-Kamchatsky, Russia came in on September 21, 2024 at 18:23 UTC. The event was offshore. See the M4.1 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 September 21, 2024. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.