Earthquakes on July 30, 2023
266
EARTHQUAKES on July 30, 2023
24-hour UTC period · USGS data
9 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
25
M3.0–3.9
11
M2.0–2.9
56
M1.0–1.9
170
Activity Summary
266
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.7
off the coast of Central America
01:10 UTC · 9.0 km deep
5.2
South Sandwich Islands region
08:43 UTC · 52.1 km deep
5.2
near the north coast of Colombia
02:27 UTC · 50.7 km deep
Felt by 3
5.0
Falkland Islands region
01:10 UTC · 10.0 km deep
4.9
210 km NNE of Shi Yomi, India
04:15 UTC · 10.0 km deep
4.8
208 km NNE of Shi Yomi, India
18:33 UTC · 10.0 km deep
4.8
25 km ENE of Curanilahue, Chile
02:16 UTC · 45.8 km deep
Felt by 10
4.7
177 km E of Kuril’sk, Russia
22:18 UTC · 35.0 km deep
Earthquake Map — July 30, 2023
All Earthquakes — July 30, 2023
Showing 30 of 96 (filtered from 266)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-07-30 2023-07-30 23:39:21 UTC | 4.1mb | 55 km NNW of Poso, Indonesia -0.947°, 120.531° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 55 km NNW of Poso, Indonesia with origin time 23:39 UTC on July 30, 2023. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 23:31:26 UTC | 2.1ml | 2 km S of Pāhala, Hawaii 19.180°, -155.481° | 34.1 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.1 earthquake 2 km S of Pāhala, Hawaii at 23:31 UTC on July 30, 2023. It arrived roughly 18 hours after a larger magnitude 2.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 23:12:14 UTC | 2.1ml | 113 km SE of King Cove, Alaska 54.333°, -161.083° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 113 km SE of King Cove, Alaska on July 30, 2023, with origin time 23:12 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 22:51:41 UTC | 2.5ml | Andreanof Islands, Aleutian Islands, Alaska 51.961°, -173.672° | 10.8 km | - | - | - | ✓ Reviewed | USGS → |
On July 30, 2023 at 22:51 UTC, a magnitude 2.5 earthquake struck near Andreanof Islands, Aleutian Islands, Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 22:41:44 UTC | 2.2ml | 224 km W of Adak, Alaska 51.871°, -179.896° | 13.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 224 km W of Adak, Alaska came in on July 30, 2023 at 22:41 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 22:37:29 UTC | 2.3md | 21 km NW of San Simeon, CA 35.792°, -121.327° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
On July 30, 2023, worldwide seismic activity registered a magnitude 2.3 earthquake 21 km NW of San Simeon, CA at 22:37 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 22:18:37 UTC | 4.7mb | 177 km E of Kuril’sk, Russia 45.311°, 150.134° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake 177 km E of Kuril’sk, Russia came in on July 30, 2023 at 22:18 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 22:07:07 UTC | 2.1ml | 38 km ESE of Atka, Alaska 52.125°, -173.647° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 38 km ESE of Atka, Alaska came in on July 30, 2023 at 22:07 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:55:13 UTC | 4.5mb | Izu Islands, Japan region 31.563°, 139.863° | 9.3 km | - | - | - | ✓ Reviewed | USGS → |
On July 30, 2023 at 21:55 UTC, a magnitude 4.5 earthquake struck in the Izu Islands, Japan region. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:44:19 UTC | 2.0md | 7 km SSE of Guánica, Puerto Rico 17.913°, -66.877° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
July 30, 2023 brought a magnitude 2.0 earthquake 7 km SSE of Guánica, Puerto Rico, logged at 21:44 UTC. Coming 17 hours after a magnitude 3.0 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. | ||||||||
2023-07-30 2023-07-30 21:39:34 UTC | 2.1ml | 42 km E of Atka, Alaska 52.143°, -173.591° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 42 km E of Atka, Alaska on July 30, 2023 at 21:39 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:33:00 UTC | 2.0ml | 28 km NNW of Pāhala, Hawaii 19.439°, -155.591° | 39.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 28 km NNW of Pāhala, Hawaii on July 30, 2023 at 21:33 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:29:29 UTC | 2.1ml | 53 km WNW of Akhiok, Alaska 57.127°, -154.991° | 32.0 km | - | - | - | ✓ Reviewed | USGS → |
July 30, 2023 brought a magnitude 2.1 earthquake 53 km WNW of Akhiok, Alaska, logged at 21:29 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:15:34 UTC | 4.3mb | 157 km ESE of Hihifo, Tonga -16.386°, -172.388° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 157 km ESE of Hihifo, Tonga at 21:15 UTC on July 30, 2023. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:14:47 UTC | 4.5mb | Mindanao, Philippines 9.185°, 126.840° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded near Mindanao, Philippines on July 30, 2023 at 21:14 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 21:10:34 UTC | 2.1ml | 131 km S of False Pass, Alaska 53.670°, -163.443° | 26.2 km | - | - | - | ✓ Reviewed | USGS → |
On July 30, 2023 at 21:10 UTC, a magnitude 2.1 earthquake struck 131 km S of False Pass, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 20:51:46 UTC | 2.2ml | 124 km NNW of Yakutat, Alaska 60.544°, -140.752° | 12.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 124 km NNW of Yakutat, Alaska on July 30, 2023 at 20:51 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 20:50:05 UTC | 3.2ml | south of Alaska 54.766°, -159.935° | 27.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake south of Alaska came in on July 30, 2023 at 20:50 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 19:35:40 UTC | 2.1ml | 100 km SSW of Sand Point, Alaska 54.452°, -160.817° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 100 km SSW of Sand Point, Alaska on July 30, 2023 at 19:35 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 19:35:01 UTC | 3.6md | 70 km N of Hatillo, Puerto Rico 19.126°, -66.816° | 18.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.6 earthquake 70 km N of Hatillo, Puerto Rico with origin time 19:35 UTC on July 30, 2023. The event was offshore. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 19:32:49 UTC | 2.0ml | 3 km SW of Pāhala, Hawaii 19.179°, -155.503° | 31.7 km | - | - | - | Auto | USGS → |
A magnitude 2.0 earthquake was recorded 3 km SW of Pāhala, Hawaii on July 30, 2023 at 19:32 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 14 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 19:31:22 UTC | 2.5md | Puerto Rico region 17.977°, -66.834° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
July 30, 2023 brought a magnitude 2.5 earthquake in the Puerto Rico region, logged at 19:31 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 15 hours earlier. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 19:22:16 UTC | 2.6ml | 43 km ESE of Perryville, Alaska 55.786°, -158.485° | 50.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 43 km ESE of Perryville, Alaska on July 30, 2023, with origin time 19:22 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 18:43:52 UTC | 4.1mb | 229 km WSW of Qamdo, China 30.660°, 94.845° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 30, 2023, worldwide seismic activity registered a magnitude 4.1 earthquake 229 km WSW of Qamdo, China at 18:43 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 18:33:44 UTC | 4.8mb | 208 km NNE of Shi Yomi, India 30.362°, 94.877° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake 208 km NNE of Shi Yomi, India at 18:33 UTC on July 30, 2023. Coming 14 hours after a magnitude 4.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 17:37:13 UTC | 2.3md | 9 km NE of Milpitas, CA 37.491°, -121.843° | 7.8 km | 2 | - | - | ✓ Reviewed | USGS → |
At 17:37 UTC on July 30, 2023, a magnitude 2.3 tremor occurred 9 km NE of Milpitas, 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. | ||||||||
2023-07-30 2023-07-30 17:15:25 UTC | 2.6ml | Alaska Peninsula 55.725°, -161.427° | 156.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake near Alaska Peninsula came in on July 30, 2023 at 17:15 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 16:44:33 UTC | 4.2mb | 34 km NE of Jiufen, Taiwan 25.360°, 122.050° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 34 km NE of Jiufen, Taiwan on July 30, 2023 at 16:44 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 16:25:49 UTC | 3.5ml | 72 km ESE of Denali National Park, Alaska 63.214°, -150.476° | 116.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.5 earthquake 72 km ESE of Denali National Park, Alaska at 16:25 UTC on July 30, 2023. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-30 2023-07-30 16:15:05 UTC | 2.8md | 17 km WNW of Rincón, Puerto Rico 18.392°, -67.406° | 2.5 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 17 km WNW of Rincón, Puerto Rico with origin time 16:15 UTC on July 30, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 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 July 30, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.