Earthquakes on August 4, 2023
240
EARTHQUAKES on August 4, 2023
24-hour UTC period · USGS data
LARGEST: M5.6 — 92 km SE of Modisi, Indonesia
40 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
38
M3.0–3.9
12
M2.0–2.9
44
M1.0–1.9
144
Activity Summary
240
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.6
92 km SE of Modisi, Indonesia
11:48 UTC · 40.0 km deep
5.5
109 km NNE of Bangkalan, Indonesia
00:31 UTC · 575.7 km deep
4.9
99 km E of Hengchun, Taiwan
12:22 UTC · 10.0 km deep
04.9
196 km N of Nagqu, China
03:05 UTC · 10.0 km deep
4.8
106 km NE of Neiafu, Tonga
23:38 UTC · 35.0 km deep
4.8
25 km S of Kigoma, Tanzania
22:06 UTC · 10.0 km deep
Felt by 4
4.8
25 km NNE of Máncora, Peru
20:17 UTC · 29.4 km deep
4.8
Taiwan region
12:25 UTC · 10.0 km deep
Earthquake Map — August 4, 2023
All Earthquakes — August 4, 2023
Showing 30 of 96 (filtered from 240)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-04 2023-08-04 23:47:10 UTC | 2.0ml | 15 km NNW of Toyah, Texas 31.435°, -103.871° | 1.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2023 at 23:47 UTC, a magnitude 2.0 earthquake struck 15 km NNW of Toyah, Texas. 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. | ||||||||
2023-08-04 2023-08-04 23:38:42 UTC | 4.8mb | 106 km NE of Neiafu, Tonga -17.862°, -173.415° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:38 UTC on August 4, 2023, a magnitude 4.8 tremor occurred 106 km NE of Neiafu, Tonga. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 23:27:18 UTC | 4.1mb | 30 km WSW of Kuril’sk, Russia 45.126°, 147.511° | 100.1 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2023 brought a magnitude 4.1 earthquake 30 km WSW of Kuril’sk, Russia, logged at 23:27 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 23:23:44 UTC | 4.3mb | 103 km SE of Modisi, Indonesia -0.189°, 125.109° | 50.6 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2023 brought a magnitude 4.3 earthquake 103 km SE of Modisi, Indonesia, logged at 23:23 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 12 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 23:11:25 UTC | 4.0mb | Pulau-Pulau Sangihe, Indonesia 3.928°, 125.655° | 119.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.0 earthquake near Pulau-Pulau Sangihe, Indonesia came in on August 4, 2023 at 23:11 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:37:41 UTC | 4.3mb | 120 km N of Likisá, Timor Leste -7.512°, 125.185° | 372.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2023 at 22:37 UTC, a magnitude 4.3 earthquake struck 120 km N of Likisá, Timor Leste. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:35:48 UTC | 2.3md | 35 km WNW of Petrolia, CA 40.407°, -124.686° | 24.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 35 km WNW of Petrolia, CA at 22:35 UTC on August 4, 2023. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:35:44 UTC | 4.0mb | 20 km SSW of Shima, Japan 34.155°, 136.786° | 352.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 seismic event took place 20 km SSW of Shima, Japan on August 4, 2023 at 22:35 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:26:21 UTC | 2.4ml | 14 km SE of Pāhala, Hawaii 19.123°, -155.373° | 29.5 km | - | - | - | Auto | USGS → |
August 4, 2023 brought a magnitude 2.4 earthquake 14 km SE of Pāhala, Hawaii, logged at 22:26 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:17:49 UTC | 4.5mb | 75 km NE of Sanana, Indonesia -1.544°, 126.429° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 75 km NE of Sanana, Indonesia with origin time 22:17 UTC on August 4, 2023. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:17:40 UTC | 3.5md | 114 km N of San Antonio, Puerto Rico 19.521°, -67.205° | 21.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.5 earthquake 114 km N of San Antonio, Puerto Rico at 22:17 UTC on August 4, 2023. The event was offshore. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:07:27 UTC | 4.5mb | 59 km NE of Port-Olry, Vanuatu -14.665°, 167.469° | 103.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2023, worldwide seismic activity registered a magnitude 4.5 earthquake 59 km NE of Port-Olry, Vanuatu at 22:07 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:06:16 UTC | 4.8mb | 25 km S of Kigoma, Tanzania -5.111°, 29.630° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake 25 km S of Kigoma, Tanzania at 22:06 UTC on August 4, 2023. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 22:02:19 UTC | 4.3mb | 40 km WSW of Gizo, Solomon Islands -8.299°, 156.530° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 40 km WSW of Gizo, Solomon Islands on August 4, 2023 at 22:02 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 21:58:50 UTC | 4.5mb | Bonin Islands, Japan region 27.471°, 142.657° | 23.6 km | - | - | - | ✓ Reviewed | USGS → |
At 21:58 UTC on August 4, 2023, a magnitude 4.5 tremor occurred in the Bonin Islands, Japan region. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 21:58:22 UTC | 3.0ml | western Texas 32.262°, -101.911° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2023 brought a magnitude 3.0 earthquake near western Texas, logged at 21:58 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 21:25:03 UTC | 2.4md | 7 km ESE of La Parguera, Puerto Rico 17.943°, -66.986° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 7 km ESE of La Parguera, Puerto Rico came in on August 4, 2023 at 21:25 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 1 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 20:58:36 UTC | 4.1mb | Afghanistan-Tajikistan-Pakistan region 36.712°, 71.080° | 243.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2023 at 20:58 UTC, a magnitude 4.1 earthquake struck in the Afghanistan-Tajikistan-Pakistan region. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 20:53:44 UTC | 2.9md | 5 km SE of Maria Antonia, Puerto Rico 17.942°, -66.858° | 15.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 5 km SE of Maria Antonia, Puerto Rico at 20:53 UTC on August 4, 2023. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 20:51:44 UTC | 4.3mb | 73 km E of Kainantu, Papua New Guinea -6.241°, 146.532° | 92.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 73 km E of Kainantu, Papua New Guinea with origin time 20:51 UTC on August 4, 2023. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 20:24:13 UTC | 4.2mb | 180 km ENE of Kokopo, Papua New Guinea -4.021°, 153.862° | 381.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 180 km ENE of Kokopo, Papua New Guinea at 20:24 UTC on August 4, 2023. 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. | ||||||||
2023-08-04 2023-08-04 20:19:49 UTC | 4.1mb | 15 km WNW of Gjirokastër, Albania 40.109°, 19.965° | 18.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 15 km WNW of Gjirokastër, Albania on August 4, 2023 at 20:19 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 20:17:33 UTC | 4.8mwr | 25 km NNE of Máncora, Peru -3.901°, -80.953° | 29.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected 25 km NNE of Máncora, Peru on August 4, 2023, with origin time 20:17 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 19:34:48 UTC | 2.4ml | 54 km S of Whites City, New Mexico 31.682°, -104.391° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 54 km S of Whites City, New Mexico at 19:34 UTC on August 4, 2023. Coming 2 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 19:27:37 UTC | 4.4mb | 3 km NE of Kitaibaraki, Japan 36.810°, 140.781° | 87.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 3 km NE of Kitaibaraki, Japan on August 4, 2023 at 19:27 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 19:16:55 UTC | 4.6mb | 58 km W of Gunungsitoli, Indonesia 1.318°, 97.093° | 31.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded 58 km W of Gunungsitoli, Indonesia on August 4, 2023 at 19:16 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 18:43:36 UTC | 2.1ml | 5 km N of Yucaipa, CA 34.081°, -117.034° | 12.6 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2023 brought a magnitude 2.1 earthquake 5 km N of Yucaipa, CA, logged at 18:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 3 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 18:31:48 UTC | 4.3mb | 37 km NW of Labuan Lombok, Indonesia -8.244°, 116.440° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2023, worldwide seismic activity registered a magnitude 4.3 earthquake 37 km NW of Labuan Lombok, Indonesia at 18:31 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 18:05:15 UTC | 4.1mb | 40 km SSW of Merizo Village, Guam 12.906°, 144.585° | 49.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 40 km SSW of Merizo Village, Guam with origin time 18:05 UTC on August 4, 2023. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-04 2023-08-04 17:58:43 UTC | 2.0ml | 90 km ENE of Ugashik, Alaska 57.770°, -155.953° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 90 km ENE of Ugashik, Alaska on August 4, 2023 at 17:58 UTC. See the M2.0 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 August 4, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.