Earthquakes on September 19, 2023
292
EARTHQUAKES on September 19, 2023
24-hour UTC period · USGS data
LARGEST: M5.8 — Izu Islands, Japan region
8 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
41
M3.0–3.9
17
M2.0–2.9
54
M1.0–1.9
177
Activity Summary
292
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.8
Izu Islands, Japan region
06:22 UTC · 8.0 km deep
5.5
Canterbury, New Zealand
21:14 UTC · 11.7 km deep
Felt by 35
5.2
Izu Islands, Japan region
22:17 UTC · 10.0 km deep
4.9
southern Sumatra, Indonesia
12:16 UTC · 60.8 km deep
4.9
81 km NNW of Sola, Vanuatu
03:28 UTC · 231.9 km deep
4.8
south of the Mariana Islands
21:10 UTC · 10.0 km deep
Felt by 1
4.7
151 km SSE of ‘Ohonua, Tonga
00:27 UTC · 10.0 km deep
4.6
South Sandwich Islands region
23:27 UTC · 107.7 km deep
Earthquake Map — September 19, 2023
All Earthquakes — September 19, 2023
Showing 30 of 115 (filtered from 292)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-09-19 2023-09-19 23:45:00 UTC | 2.2md | 32 km ENE of Willow Creek, CA 41.099°, -123.313° | 32.4 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023 at 23:45 UTC, a magnitude 2.2 earthquake struck 32 km ENE of Willow Creek, CA. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 23:43:58 UTC | 4.2mb | 73 km SW of Yonakuni, Japan 23.972°, 122.520° | 35.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 73 km SW of Yonakuni, Japan on September 19, 2023, with origin time 23:43 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 23:27:23 UTC | 4.6mb | South Sandwich Islands region -56.048°, -27.254° | 107.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake in the South Sandwich Islands region came in on September 19, 2023 at 23:27 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 23:18:56 UTC | 2.6ml | 185 km SSE of Unalaska, Alaska 52.257°, -165.836° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 2.6 earthquake 185 km SSE of Unalaska, Alaska at 23:18 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 20 hours earlier. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 23:09:32 UTC | 2.9ml | 93 km SSE of Sand Point, Alaska 54.593°, -159.805° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 2.9 earthquake 93 km SSE of Sand Point, Alaska at 23:09 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 23:03:35 UTC | 2.0ml | 78 km WSW of Karluk, Alaska 57.432°, -155.746° | 74.3 km | - | - | - | ✓ Reviewed | USGS → |
September 19, 2023 brought a magnitude 2.0 earthquake 78 km WSW of Karluk, Alaska, logged at 23:03 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:39:22 UTC | 4.4mb | Kermadec Islands region -30.017°, -176.484° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake in the Kermadec Islands region with origin time 22:39 UTC on September 19, 2023. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:35:00 UTC | 3.7md | 86 km NNE of Vieques, Puerto Rico 19.133°, -65.485° | 46.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.7 seismic event took place 86 km NNE of Vieques, Puerto Rico on September 19, 2023 at 22:35 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:30:03 UTC | 2.7ml | 9 km W of Velma, Oklahoma 34.473°, -97.775° | 13.9 km | 1 | - | - | ✓ Reviewed | USGS → |
September 19, 2023 brought a magnitude 2.7 earthquake 9 km W of Velma, Oklahoma, logged at 22:30 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:18:39 UTC | 4.0mb | 195 km SW of Mazatlán, Mexico 21.927°, -107.680° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 4.0 earthquake 195 km SW of Mazatlán, Mexico at 22:18 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:17:51 UTC | 2.9ml | 113 km SSW of Kaktovik, Alaska 69.186°, -144.702° | 6.4 km | - | - | - | ✓ Reviewed | USGS → |
At 22:17 UTC on September 19, 2023, a magnitude 2.9 tremor occurred 113 km SSW of Kaktovik, Alaska. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:17:47 UTC | 5.2mww | Izu Islands, Japan region 30.976°, 142.008° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.2 earthquake in the Izu Islands, Japan region with origin time 22:17 UTC on September 19, 2023. Coming 16 hours after a magnitude 5.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:02:03 UTC | 3.3md | 93 km NNE of Vieques, Puerto Rico 19.194°, -65.477° | 39.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.3 earthquake 93 km NNE of Vieques, Puerto Rico with origin time 22:02 UTC on September 19, 2023. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 22:01:05 UTC | 4.5mb | Izu Islands, Japan region 31.323°, 141.672° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:01 UTC on September 19, 2023, a magnitude 4.5 tremor occurred in the Izu Islands, Japan region. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:54:02 UTC | 2.4ml | 113 km SW of Pelican, Alaska 57.191°, -137.465° | 26.0 km | - | - | - | ✓ Reviewed | USGS → |
September 19, 2023 brought a magnitude 2.4 earthquake 113 km SW of Pelican, Alaska, logged at 21:54 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:45:09 UTC | 3.2ml | Rat Islands, Aleutian Islands, Alaska 51.211°, 178.133° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake near Rat Islands, Aleutian Islands, Alaska at 21:45 UTC on September 19, 2023. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:43:52 UTC | 2.2ml | 26 km E of Adak, Alaska 51.852°, -176.246° | 66.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 2.2 earthquake 26 km E of Adak, Alaska at 21:43 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:26:47 UTC | 2.0ml | Southern Alaska 59.902°, -152.856° | 86.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023 at 21:26 UTC, a magnitude 2.0 earthquake struck near Southern Alaska. Coming 5 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:14:49 UTC | 5.5mww | Canterbury, New Zealand -43.704°, 171.120° | 11.7 km | 35 | VII | green | ✓ Reviewed | USGS → |
A magnitude 5.5 earthquake was recorded near Canterbury, New Zealand on September 19, 2023 at 21:14 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 21:10:54 UTC | 4.8mb | south of the Mariana Islands 10.822°, 144.069° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake south of the Mariana Islands at 21:10 UTC on September 19, 2023. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 18:58:18 UTC | 2.1ml | 8 km ENE of Pope-Vannoy Landing, Alaska 59.577°, -154.344° | 177.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 8 km ENE of Pope-Vannoy Landing, Alaska on September 19, 2023 at 18:58 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 18:51:27 UTC | 4.3mb | 69 km NE of Finschhafen, Papua New Guinea -6.050°, 148.210° | 83.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 69 km NE of Finschhafen, Papua New Guinea on September 19, 2023 at 18:51 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 18:22:12 UTC | 4.5mb | 225 km SE of Shikotan, Russia 42.550°, 148.905° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake 225 km SE of Shikotan, Russia at 18:22 UTC on September 19, 2023. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 18:20:18 UTC | 2.0ml | 57 km WNW of Austin, Nevada 39.672°, -117.695° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 57 km WNW of Austin, Nevada on September 19, 2023 at 18:20 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. | ||||||||
2023-09-19 2023-09-19 18:18:08 UTC | 2.6mb_lg | 10 km E of Cowles, Nebraska 40.185°, -98.323° | 7.8 km | 1 | - | - | ✓ Reviewed | USGS → |
At 18:18 UTC on September 19, 2023, a magnitude 2.6 tremor occurred 10 km E of Cowles, Nebraska. Coming 7 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 M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 18:06:05 UTC | 4.3mwr | 80 km W of San Antonio de los Cobres, Argentina -24.345°, -67.100° | 157.0 km | - | - | - | ✓ Reviewed | USGS → |
September 19, 2023 brought a magnitude 4.3 earthquake 80 km W of San Antonio de los Cobres, Argentina, logged at 18:06 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 16:52:59 UTC | 4.4mwr | 111 km SSW of Sand Point, Alaska 54.361°, -160.887° | 35.3 km | 1 | II | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake 111 km SSW of Sand Point, Alaska at 16:52 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 16:34:03 UTC | 2.0ml | 10 km W of Velma, Oklahoma 34.471°, -97.782° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 10 km W of Velma, Oklahoma on September 19, 2023 at 16:34 UTC. It arrived roughly 4 hours after a larger magnitude 2.3 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. | ||||||||
2023-09-19 2023-09-19 16:19:59 UTC | 2.6ml | 62 km W of Anchor Point, Alaska 59.834°, -152.944° | 100.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 62 km W of Anchor Point, Alaska at 16:19 UTC on September 19, 2023. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-19 2023-09-19 16:16:38 UTC | 2.3ml | 133 km N of Nikolski, Alaska 54.135°, -168.885° | 18.1 km | - | - | - | ✓ Reviewed | USGS → |
On September 19, 2023, worldwide seismic activity registered a magnitude 2.3 earthquake 133 km N of Nikolski, Alaska at 16:16 UTC. Coming 9 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 M2.3 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 19, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.