Earthquakes on September 17, 2023
199
EARTHQUAKES on September 17, 2023
24-hour UTC period · USGS data
10 km deep · 10 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
24
M3.0–3.9
9
M2.0–2.9
39
M1.0–1.9
124
Activity Summary
199
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
229 km W of Port McNeill, Canada
11:28 UTC · 10.0 km deep
Felt by 10
5.1
South Sandwich Islands region
22:54 UTC · 64.2 km deep
5.1
52 km N of La Serena, Chile
04:01 UTC · 47.9 km deep
Felt by 4
4.9
64 km WNW of Kirakira, Solomon Islands
11:53 UTC · 88.6 km deep
Felt by 1
4.8
Off the coast of Bio-Bio, Chile
02:18 UTC · 10.0 km deep
4.7
96 km ENE of Norsup, Vanuatu
12:58 UTC · 10.0 km deep
4.6
52 km SSE of Karakenja, Tajikistan
16:23 UTC · 11.5 km deep
4.5
Komandorskiye Ostrova, Russia region
23:18 UTC · 10.0 km deep
Earthquake Map — September 17, 2023
All Earthquakes — September 17, 2023
Showing 30 of 75 (filtered from 199)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-09-17 2023-09-17 23:37:17 UTC | 4.4mb | Fiji region -19.428°, -177.752° | 566.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded in the Fiji region on September 17, 2023 at 23:37 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. | ||||||||
2023-09-17 2023-09-17 23:18:47 UTC | 4.5mb | Komandorskiye Ostrova, Russia region 55.932°, 164.555° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake in the Komandorskiye Ostrova, Russia region came in on September 17, 2023 at 23:18 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 22:54:40 UTC | 5.1mb | South Sandwich Islands region -55.974°, -27.053° | 64.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded in the South Sandwich Islands region on September 17, 2023 at 22:54 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 22:27:02 UTC | 2.0ml | 16 km NE of Hermleigh, Texas 32.757°, -100.651° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
September 17, 2023 brought a magnitude 2.0 earthquake 16 km NE of Hermleigh, Texas, logged at 22:27 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 22:20:42 UTC | 4.1mb | 145 km N of Lae, Papua New Guinea -5.414°, 147.106° | 199.3 km | - | - | - | ✓ Reviewed | USGS → |
At 22:20 UTC on September 17, 2023, a magnitude 4.1 tremor occurred 145 km N of Lae, Papua New Guinea. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 22:10:36 UTC | 2.1ml | 55 km NW of Ninilchik, Alaska 60.413°, -152.346° | 82.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 55 km NW of Ninilchik, Alaska with origin time 22:10 UTC on September 17, 2023. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 22:05:55 UTC | 2.9ml | 109 km SSW of Atka, Alaska 51.368°, -175.069° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 109 km SSW of Atka, Alaska on September 17, 2023, with origin time 22:05 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 21:58:31 UTC | 2.2ml | 5 km E of Meridian, Oklahoma 35.850°, -97.189° | 7.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 5 km E of Meridian, Oklahoma at 21:58 UTC on September 17, 2023. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 20:49:07 UTC | 2.2ml | 107 km SSE of Sand Point, Alaska 54.517°, -159.614° | 25.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 107 km SSE of Sand Point, Alaska on September 17, 2023, with origin time 20:49 UTC. Coming 4 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 20:20:29 UTC | 2.8ml | 20 km ESE of Peach Springs, Arizona 35.439°, -113.225° | 5.0 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 20 km ESE of Peach Springs, Arizona on September 17, 2023 at 20:20 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 20:16:54 UTC | 3.1ml | 80 km SW of Karluk, Alaska 57.145°, -155.541° | 63.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 17, 2023, worldwide seismic activity registered a magnitude 3.1 earthquake 80 km SW of Karluk, Alaska at 20:16 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 20:03:46 UTC | 4.1mwr | Near the coast of Atacama, Chile -28.262°, -71.200° | 46.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.1 earthquake near Near the coast of Atacama, Chile at 20:03 UTC on September 17, 2023. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 19:17:45 UTC | 2.2ml | 16 km ENE of Falls City, Texas 29.051°, -97.872° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 16 km ENE of Falls City, Texas came in on September 17, 2023 at 19:17 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 18:46:04 UTC | 3.1ml | 15 km ESE of Wright, Wyoming 43.710°, -105.312° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:46 UTC on September 17, 2023, a magnitude 3.1 tremor occurred 15 km ESE of Wright, Wyoming. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 18:24:29 UTC | 2.0ml | 52 km ESE of King Cove, Alaska 54.899°, -161.551° | 83.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 17, 2023 at 18:24 UTC, a magnitude 2.0 earthquake struck 52 km ESE of King Cove, Alaska. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 18:20:08 UTC | 2.1md | 4 km SSW of Tallaboa, Puerto Rico 17.958°, -66.737° | 16.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 4 km SSW of Tallaboa, Puerto Rico on September 17, 2023 at 18:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 2 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 18:09:30 UTC | 4.3mb | 28 km SSE of Ikungi, Tanzania -5.379°, 34.853° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 28 km SSE of Ikungi, Tanzania came in on September 17, 2023 at 18:09 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 17:57:21 UTC | 2.1ml | 63 km SE of King Cove, Alaska 54.709°, -161.540° | 35.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 17, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 63 km SE of King Cove, Alaska at 17:57 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:54:47 UTC | 2.3md | 1 km E of Pacifica, CA 37.613°, -122.474° | 8.8 km | 9 | - | - | ✓ Reviewed | USGS → |
At 16:54 UTC on September 17, 2023, a magnitude 2.3 tremor occurred 1 km E of Pacifica, CA. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:48:37 UTC | 3.2ml | 45 km SE of Atka, Alaska 51.929°, -173.707° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 earthquake was recorded 45 km SE of Atka, Alaska on September 17, 2023 at 16:48 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:47:32 UTC | 3.0ml | 96 km SSE of Sand Point, Alaska 54.573°, -159.791° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 96 km SSE of Sand Point, Alaska at 16:47 UTC on September 17, 2023. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:35:09 UTC | 4.5mb | Volcano Islands, Japan region 23.129°, 142.254° | 108.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place in the Volcano Islands, Japan region on September 17, 2023 at 16:35 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:23:31 UTC | 4.6mb | 52 km SSE of Karakenja, Tajikistan 38.803°, 71.760° | 11.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 52 km SSE of Karakenja, Tajikistan on September 17, 2023, with origin time 16:23 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:21:28 UTC | 2.8md | 13 km SSE of Guánica, Puerto Rico 17.858°, -66.861° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
September 17, 2023 brought a magnitude 2.8 earthquake 13 km SSE of Guánica, Puerto Rico, logged at 16:21 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:07:17 UTC | 2.1ml | 101 km ESE of Akutan, Alaska 53.679°, -164.437° | 34.4 km | - | - | - | ✓ Reviewed | USGS → |
At 16:07 UTC on September 17, 2023, a magnitude 2.1 tremor occurred 101 km ESE of Akutan, Alaska. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 16:03:59 UTC | 2.1ml | 27 km ESE of Paxson, Alaska 63.007°, -145.094° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 27 km ESE of Paxson, Alaska at 16:03 UTC on September 17, 2023. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 15:39:45 UTC | 2.2ml | 35 km SSW of Los Ybanez, Texas 32.447°, -102.121° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 35 km SSW of Los Ybanez, Texas on September 17, 2023 at 15:39 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 15:19:50 UTC | 4.4mwr | 230 km W of Port McNeill, Canada 50.842°, -130.332° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 230 km W of Port McNeill, Canada with origin time 15:19 UTC on September 17, 2023. It arrived roughly 4 hours after a larger magnitude 5.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-17 2023-09-17 14:52:40 UTC | 4.4mb | 280 km WNW of Houma, Tonga -19.980°, -177.674° | 496.4 km | - | - | - | ✓ Reviewed | USGS → |
On September 17, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake 280 km WNW of Houma, Tonga at 14:52 UTC. 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. | ||||||||
2023-09-17 2023-09-17 14:30:17 UTC | 3.3md | 47 km N of Hatillo, Puerto Rico 18.912°, -66.797° | 20.3 km | - | - | - | ✓ Reviewed | USGS → |
On September 17, 2023 at 14:30 UTC, a magnitude 3.3 earthquake struck 47 km N of Hatillo, Puerto Rico. The event was offshore. See the M3.3 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 17, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.