Earthquakes on September 23, 2026
232
EARTHQUAKES on September 23, 2026
24-hour UTC period · USGS data
LARGEST: M5.7 — 180 km NW of Hihifo, Tonga
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
20
M3.0–3.9
9
M2.0–2.9
58
M1.0–1.9
141
Activity Summary
232
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.7
180 km NW of Hihifo, Tonga
14:41 UTC · 10.0 km deep
5.3
51 km WSW of Arauco, Argentina
09:21 UTC · 121.5 km deep
Felt by 4
5.0
139 km NNE of Ba, Fiji
17:46 UTC · 10.0 km deep
5.0
Mariana Islands region
13:01 UTC · 306.0 km deep
4.9
193 km SE of Mata-Utu, Wallis and Futuna
17:20 UTC · 10.0 km deep
4.9
Scotia Sea
08:41 UTC · 10.0 km deep
04.9
southern East Pacific Rise
07:36 UTC · 10.0 km deep
4.7
30 km SE of Khorugh, Tajikistan
05:46 UTC · 141.2 km deep
Earthquake Map — September 23, 2026
All Earthquakes — September 23, 2026
Showing 30 of 91 (filtered from 232)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-09-23 2026-09-23 23:16:35 UTC | 2.0md | 3 km W of Fuig, Puerto Rico 17.987°, -66.947° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 3 km W of Fuig, Puerto Rico at 23:16 UTC on September 23, 2026. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 17 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 22:31:20 UTC | 4.5mb | 50 km E of Finschhafen, Papua New Guinea -6.640°, 148.294° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 50 km E of Finschhafen, Papua New Guinea with origin time 22:31 UTC on September 23, 2026. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 21:54:46 UTC | 2.4ml | 56 km S of Whites City, New Mexico 31.665°, -104.417° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 56 km S of Whites City, New Mexico on September 23, 2026 at 21:54 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 21:35:24 UTC | 4.4mb | 36 km NNE of Kuji, Japan 40.463°, 141.994° | 70.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 36 km NNE of Kuji, Japan at 21:35 UTC on September 23, 2026. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 21:13:06 UTC | 2.0ml | 46 km SE of Denali National Park, Alaska 63.298°, -150.971° | 0.1 km | - | - | - | Auto | USGS → |
This magnitude 2.0 event was detected 46 km SE of Denali National Park, Alaska on September 23, 2026, with origin time 21:13 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. | ||||||||
2026-09-23 2026-09-23 20:55:51 UTC | 2.3md | 4 km SW of Guánica, Puerto Rico 17.945°, -66.934° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 23, 2026, worldwide seismic activity registered a magnitude 2.3 earthquake 4 km SW of Guánica, Puerto Rico at 20:55 UTC. It arrived roughly 15 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 20:51:03 UTC | 2.1md | 2 km NNW of Fuig, Puerto Rico 18.008°, -66.928° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 2 km NNW of Fuig, Puerto Rico on September 23, 2026, with origin time 20:51 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 15 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 20:44:36 UTC | 3.0ml | 17 km WSW of Johannesburg, CA 35.310°, -117.805° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 23, 2026, worldwide seismic activity registered a magnitude 3.0 earthquake 17 km WSW of Johannesburg, CA at 20:44 UTC. It arrived roughly 6 hours after a larger magnitude 3.2 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. | ||||||||
2026-09-23 2026-09-23 20:16:45 UTC | 2.0ml | 13 km WNW of Willow, Alaska 61.800°, -150.261° | 58.0 km | 1 | - | - | Auto | USGS → |
Reports of a magnitude 2.0 earthquake 13 km WNW of Willow, Alaska came in on September 23, 2026 at 20:16 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 20:09:44 UTC | 4.6mb | 9 km S of San Antonio, Colombia 3.832°, -75.470° | 74.5 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 9 km S of San Antonio, Colombia on September 23, 2026 at 20:09 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 19:59:30 UTC | 2.5ml | 17 km WSW of Johannesburg, CA 35.311°, -117.802° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 17 km WSW of Johannesburg, CA on September 23, 2026, with origin time 19:59 UTC. Coming 5 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 19:14:34 UTC | 2.1ml | 57 km ENE of Pedro Bay, Alaska 60.010°, -153.185° | 135.2 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.1 earthquake 57 km ENE of Pedro Bay, Alaska came in on September 23, 2026 at 19:14 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 18:33:25 UTC | 2.0ml | 16 km E of Pearsall, Texas 28.869°, -98.929° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 16 km E of Pearsall, Texas on September 23, 2026 at 18:33 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 18:28:56 UTC | 2.7md | 25 km SW of Toms Place, CA 37.418°, -118.890° | 3.0 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.7 earthquake 25 km SW of Toms Place, CA with origin time 18:28 UTC on September 23, 2026. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 18:16:31 UTC | 2.3md | 2 km NNE of Guayanilla, Puerto Rico 18.041°, -66.785° | 14.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 2 km NNE of Guayanilla, Puerto Rico with origin time 18:16 UTC on September 23, 2026. 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. | ||||||||
2026-09-23 2026-09-23 17:46:06 UTC | 5.0mww | 139 km NNE of Ba, Fiji -16.316°, 178.024° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 139 km NNE of Ba, Fiji with origin time 17:46 UTC on September 23, 2026. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 17:38:48 UTC | 2.8ml | 56 km WNW of Anchor Point, Alaska 59.882°, -152.819° | 101.0 km | - | - | - | Auto | USGS → |
At 17:38 UTC on September 23, 2026, a magnitude 2.8 tremor occurred 56 km WNW of Anchor Point, Alaska. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 17:20:32 UTC | 4.9mb | 193 km SE of Mata-Utu, Wallis and Futuna -14.640°, -175.053° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 17:20 UTC on September 23, 2026, a magnitude 4.9 tremor occurred 193 km SE of Mata-Utu, Wallis and Futuna. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 16:48:37 UTC | 4.6mb | 59 km WNW of San Antonio de los Cobres, Argentina -24.081°, -66.889° | 193.2 km | - | - | - | ✓ Reviewed | USGS → |
September 23, 2026 brought a magnitude 4.6 earthquake 59 km WNW of San Antonio de los Cobres, Argentina, logged at 16:48 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 16:38:10 UTC | 3.4ml | 33 km W of Nanwalek, Alaska 59.402°, -152.503° | 71.8 km | - | - | - | Auto | USGS → |
At 16:38 UTC on September 23, 2026, a magnitude 3.4 tremor occurred 33 km W of Nanwalek, Alaska. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 16:00:10 UTC | 2.6md | 2 km NW of Hollister, CA 36.861°, -121.415° | 6.1 km | 24 | - | - | Auto | USGS → |
September 23, 2026 brought a magnitude 2.6 earthquake 2 km NW of Hollister, CA, logged at 16:00 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 15:34:53 UTC | 2.6ml | 74 km WSW of Cantwell, Alaska 63.200°, -150.384° | 114.6 km | - | - | - | Auto | USGS → |
At 15:34 UTC on September 23, 2026, a magnitude 2.6 tremor occurred 74 km WSW of Cantwell, Alaska. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 15:11:46 UTC | 2.1ml | 67 km SSE of Kokhanok, Alaska 58.850°, -154.536° | 129.9 km | - | - | - | Auto | USGS → |
A magnitude 2.1 seismic event took place 67 km SSE of Kokhanok, Alaska on September 23, 2026 at 15:11 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 15:01:48 UTC | 3.2ml | 17 km WSW of Johannesburg, CA 35.307°, -117.804° | 6.8 km | 4 | - | - | ✓ Reviewed | USGS → |
September 23, 2026 brought a magnitude 3.2 earthquake 17 km WSW of Johannesburg, CA, logged at 15:01 UTC. In the 72 hours after this event, the USGS recorded 7 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 14:50:31 UTC | 2.3ml | 72 km WSW of Karluk, Alaska 57.265°, -155.519° | 65.8 km | - | - | - | Auto | USGS → |
At 14:50 UTC on September 23, 2026, a magnitude 2.3 tremor occurred 72 km WSW of Karluk, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 1 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 14:45:35 UTC | 4.6mb | south of the Fiji Islands -23.974°, 179.258° | 528.3 km | - | - | - | ✓ Reviewed | USGS → |
On September 23, 2026 at 14:45 UTC, a magnitude 4.6 earthquake struck south of the Fiji Islands. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 14:41:02 UTC | 5.7mww | 180 km NW of Hihifo, Tonga -14.937°, -175.111° | 10.0 km | - | III | green | ✓ Reviewed | USGS → |
On September 23, 2026 at 14:41 UTC, a magnitude 5.7 earthquake struck 180 km NW of Hihifo, Tonga. 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 23, 2026. See the M5.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 14:19:32 UTC | 4.2mb | 21 km ENE of Lais, Philippines 6.426°, 125.822° | 150.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 21 km ENE of Lais, Philippines on September 23, 2026 at 14:19 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 13:35:15 UTC | 2.3md | 7 km SE of Brevard, North Carolina 35.182°, -82.680° | 9.4 km | 27 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 7 km SE of Brevard, North Carolina came in on September 23, 2026 at 13:35 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-23 2026-09-23 13:30:25 UTC | 3.1ml | 75 km WSW of Karluk, Alaska 57.202°, -155.508° | 51.3 km | - | - | - | Auto | USGS → |
On September 23, 2026 at 13:30 UTC, a magnitude 3.1 earthquake struck 75 km WSW of Karluk, Alaska. See the M3.1 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 23, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.