Earthquakes on July 20, 2023
266
EARTHQUAKES on July 20, 2023
24-hour UTC period · USGS data
LARGEST: M5.2 — 75 km NE of Sanana, Indonesia
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
37
M3.0–3.9
15
M2.0–2.9
45
M1.0–1.9
167
Activity Summary
266
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.2
75 km NE of Sanana, Indonesia
03:31 UTC · 10.0 km deep
5.0
Kermadec Islands region
03:24 UTC · 10.0 km deep
4.8
139 km SSW of Kokopo, Papua New Guinea
07:03 UTC · 62.7 km deep
4.7
96 km NE of Sanana, Indonesia
18:30 UTC · 10.0 km deep
4.7
Mariana Islands region
02:44 UTC · 10.0 km deep
4.6
Banda Sea
18:10 UTC · 160.9 km deep
4.6
114 km W of Ternate, Indonesia
15:19 UTC · 6.0 km deep
4.6
Reykjanes Ridge
08:57 UTC · 10.0 km deep
Earthquake Map — July 20, 2023
All Earthquakes — July 20, 2023
Showing 30 of 99 (filtered from 266)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-07-20 2023-07-20 23:01:57 UTC | 4.2mb | 106 km NW of Madang, Papua New Guinea -4.460°, 145.203° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 106 km NW of Madang, Papua New Guinea at 23:01 UTC on July 20, 2023. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:46:43 UTC | 2.1ml | 90 km NW of Karluk, Alaska 58.211°, -155.389° | 0.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 90 km NW of Karluk, Alaska on July 20, 2023 at 22:46 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:41:46 UTC | 4.2mb | 39 km WSW of Finschhafen, Papua New Guinea -6.661°, 147.500° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 39 km WSW of Finschhafen, Papua New Guinea on July 20, 2023, with origin time 22:41 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:39:44 UTC | 4.3mb | 11 km ESE of Jaipur, India 26.869°, 75.891° | 10.0 km | 116 | - | - | ✓ Reviewed | USGS → |
July 20, 2023 brought a magnitude 4.3 earthquake 11 km ESE of Jaipur, India, logged at 22:39 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:38:46 UTC | 4.4mb | 79 km WNW of Neiafu, Tonga -18.353°, -174.664° | 131.3 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake 79 km WNW of Neiafu, Tonga at 22:38 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:34:13 UTC | 2.6ml | Rat Islands, Aleutian Islands, Alaska 51.823°, 178.284° | 111.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake near Rat Islands, Aleutian Islands, Alaska came in on July 20, 2023 at 22:34 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 22:33:18 UTC | 4.4mb | north of Svalbard 81.548°, -4.838° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:33 UTC on July 20, 2023, a magnitude 4.4 tremor occurred north of Svalbard. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 21:41:10 UTC | 4.3mb | Kuril Islands 46.968°, 152.919° | 52.7 km | 1 | - | - | ✓ Reviewed | USGS → |
On July 20, 2023 at 21:41 UTC, a magnitude 4.3 earthquake struck near Kuril Islands. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 21:04:51 UTC | 2.1ml | 10 km NE of Stanley, Idaho 44.278°, -114.831° | 5.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 10 km NE of Stanley, Idaho on July 20, 2023 at 21:04 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 20:47:06 UTC | 4.5mb | 175 km N of Saipan, Northern Mariana Islands 16.776°, 146.053° | 9.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 175 km N of Saipan, Northern Mariana Islands on July 20, 2023 at 20:47 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 20:32:26 UTC | 4.3mb | 26 km ENE of Ransiki, Indonesia -1.392°, 134.379° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 26 km ENE of Ransiki, Indonesia on July 20, 2023 at 20:32 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 20:24:56 UTC | 3.0md | 33 km WNW of Rincón, Puerto Rico 18.488°, -67.525° | 17.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:24 UTC on July 20, 2023, a magnitude 3.0 tremor occurred 33 km WNW of Rincón, Puerto Rico. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 20:14:39 UTC | 2.5ml | Central Alaska 62.253°, -154.510° | 10.1 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2023 at 20:14 UTC, a magnitude 2.5 earthquake struck near Central Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 19:58:24 UTC | 4.1mb | 186 km N of Saipan, Northern Mariana Islands 16.881°, 146.001° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
July 20, 2023 brought a magnitude 4.1 earthquake 186 km N of Saipan, Northern Mariana Islands, logged at 19:58 UTC. Coming 1 hours after a magnitude 4.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 19:56:56 UTC | 4.3mb | 181 km NNE of Saipan, Northern Mariana Islands 16.799°, 146.167° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 181 km NNE of Saipan, Northern Mariana Islands with origin time 19:56 UTC on July 20, 2023. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 19:48:25 UTC | 2.1ml | 112 km S of False Pass, Alaska 53.840°, -163.471° | 25.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 112 km S of False Pass, Alaska with origin time 19:48 UTC on July 20, 2023. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 18:58:32 UTC | 2.2ml | 86 km NNW of Aleneva, Alaska 58.731°, -153.648° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2023, worldwide seismic activity registered a magnitude 2.2 earthquake 86 km NNW of Aleneva, Alaska at 18:58 UTC. 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 18:38:48 UTC | 2.0ml | 84 km SE of Akutan, Alaska 53.581°, -164.899° | 26.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 84 km SE of Akutan, Alaska with origin time 18:38 UTC on July 20, 2023. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 18:30:20 UTC | 4.7mb | 96 km NE of Sanana, Indonesia -1.407°, 126.561° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2023, worldwide seismic activity registered a magnitude 4.7 earthquake 96 km NE of Sanana, Indonesia at 18:30 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 18:10:17 UTC | 4.6mb | Banda Sea -6.810°, 129.726° | 160.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake near Banda Sea at 18:10 UTC on July 20, 2023. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 17:19:54 UTC | 4.1mb | 69 km NW of Ollagüe, Chile -20.853°, -68.796° | 120.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2023 at 17:19 UTC, a magnitude 4.1 earthquake struck 69 km NW of Ollagüe, Chile. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 17:14:14 UTC | 2.2ml | 14 km NNW of Meadow Lakes, Alaska 61.749°, -149.684° | 39.3 km | - | - | - | ✓ Reviewed | USGS → |
At 17:14 UTC on July 20, 2023, a magnitude 2.2 tremor occurred 14 km NNW of Meadow Lakes, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:53:37 UTC | 3.3ml | 123 km WSW of Adak, Alaska 51.396°, -178.239° | 32.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.3 event was detected 123 km WSW of Adak, Alaska on July 20, 2023, with origin time 16:53 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:35:45 UTC | 4.5mb | 83 km NE of Sanana, Indonesia -1.496°, 126.479° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
July 20, 2023 brought a magnitude 4.5 earthquake 83 km NE of Sanana, Indonesia, logged at 16:35 UTC. It arrived roughly 13 hours after a larger magnitude 5.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:27:25 UTC | 2.5ml | 71 km SSW of False Pass, Alaska 54.303°, -163.986° | 79.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 71 km SSW of False Pass, Alaska on July 20, 2023 at 16:27 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:21:01 UTC | 3.1ml | Rat Islands, Aleutian Islands, Alaska 50.443°, 178.725° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake near Rat Islands, Aleutian Islands, Alaska with origin time 16:21 UTC on July 20, 2023. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:10:03 UTC | 3.4ml | 174 km WSW of Nikolski, Alaska 52.245°, -171.171° | 57.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded 174 km WSW of Nikolski, Alaska on July 20, 2023 at 16:10 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:05:36 UTC | 4.4mb | 61 km ENE of Kokopo, Papua New Guinea -4.163°, 152.790° | 118.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 61 km ENE of Kokopo, Papua New Guinea at 16:05 UTC on July 20, 2023. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 16:01:17 UTC | 2.1ml | 6km SW of Idyllwild, CA 33.706°, -116.761° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
July 20, 2023 brought a magnitude 2.1 earthquake 6km SW of Idyllwild, CA, logged at 16:01 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-20 2023-07-20 15:40:31 UTC | 3.4ml | 207 km S of Atka, Alaska 50.355°, -173.725° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.4 earthquake 207 km S of Atka, Alaska with origin time 15:40 UTC on July 20, 2023. The event was offshore. See the M3.4 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 20, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.