Earthquakes on July 18, 2023
226
EARTHQUAKES on July 18, 2023
24-hour UTC period · USGS data
10 km deep · 3 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
28
M3.0–3.9
10
M2.0–2.9
45
M1.0–1.9
142
Activity Summary
226
Total earthquakes
~250
Daily average
Normal
Activity level
1
M5.0+ events
Significant Earthquakes (M4.5+)
5.6
173 km SW of La Manzanilla, Mexico
10:13 UTC · 10.0 km deep
Felt by 3
4.8
Mid-Indian Ridge
18:19 UTC · 10.0 km deep
4.8
68 km N of Labuan Lombok, Indonesia
04:07 UTC · 10.0 km deep
4.8
southeast of the Loyalty Islands
01:09 UTC · 113.1 km deep
4.7
136 km S of ?Ohonua, Tonga
19:51 UTC · 10.0 km deep
4.6
Alaska Peninsula
11:06 UTC · 42.5 km deep
4.6
181 km SW of La Manzanilla, Mexico
10:03 UTC · 10.0 km deep
4.6
188 km ESE of Hihifo, Tonga
00:44 UTC · 10.0 km deep
Earthquake Map — July 18, 2023
All Earthquakes — July 18, 2023
Showing 30 of 84 (filtered from 226)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-07-18 2023-07-18 23:54:31 UTC | 2.9ml | 30 km ENE of King Cove, Alaska 55.133°, -161.859° | 114.6 km | - | - | - | ✓ Reviewed | USGS → |
July 18, 2023 brought a magnitude 2.9 earthquake 30 km ENE of King Cove, Alaska, logged at 23:54 UTC. It arrived roughly 5 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 23:46:02 UTC | 2.0ml | 65 km SW of Akhiok, Alaska 56.605°, -155.055° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
July 18, 2023 brought a magnitude 2.0 earthquake 65 km SW of Akhiok, Alaska, logged at 23:46 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 23:23:45 UTC | 2.1ml | 17 km NNW of Mina, Nevada 38.544°, -118.161° | 8.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 23:23 UTC, a magnitude 2.1 earthquake struck 17 km NNW of Mina, Nevada. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 23:02:46 UTC | 3.0ml | 267 km SSW of Nikolski, Alaska 50.820°, -170.683° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 267 km SSW of Nikolski, Alaska came in on July 18, 2023 at 23:02 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.5 earthquake that occurred about 20 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 22:40:35 UTC | 3.4ml | 192 km SE of Adak, Alaska 50.466°, -175.024° | 9.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.4 earthquake 192 km SE of Adak, Alaska with origin time 22:40 UTC on July 18, 2023. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 21:55:42 UTC | 2.5md | 47 km WNW of Petrolia, CA 40.473°, -124.809° | 21.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 47 km WNW of Petrolia, CA on July 18, 2023 at 21:55 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 21:50:51 UTC | 2.7ml | northern Yukon Territory, Canada 65.572°, -137.080° | 26.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected near northern Yukon Territory, Canada on July 18, 2023, with origin time 21:50 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 21:11:48 UTC | 3.5ml | 205 km SE of Perryville, Alaska 54.626°, -156.831° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 21:11 UTC, a magnitude 3.5 earthquake struck 205 km SE of Perryville, Alaska. The event was offshore. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 21:08:20 UTC | 4.0mb | Off the coast of Valparaiso, Chile -32.868°, -72.212° | 21.9 km | - | - | - | ✓ Reviewed | USGS → |
At 21:08 UTC on July 18, 2023, a magnitude 4.0 tremor occurred near Off the coast of Valparaiso, Chile. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 21:06:58 UTC | 2.5md | 4 km SE of La Parguera, Puerto Rico 17.945°, -67.023° | 9.7 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 21:06 UTC, a magnitude 2.5 earthquake struck 4 km SE of La Parguera, Puerto Rico. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 20:48:58 UTC | 4.5mb | northern Mid-Atlantic Ridge 20.980°, -45.786° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place near northern Mid-Atlantic Ridge on July 18, 2023 at 20:48 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 20:45:05 UTC | 2.1ml | 101 km S of Sand Point, Alaska 54.440°, -160.798° | 2.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 101 km S of Sand Point, Alaska on July 18, 2023 at 20:45 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. | ||||||||
2023-07-18 2023-07-18 20:30:55 UTC | 4.0mb | 4 km SSW of Peştişani, Romania 45.031°, 23.021° | 12.9 km | 31 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.0 earthquake 4 km SSW of Peştişani, Romania at 20:30 UTC on July 18, 2023. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 20:23:50 UTC | 4.1mb | Tonga -15.501°, -174.596° | 163.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake near Tonga came in on July 18, 2023 at 20:23 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 20:04:19 UTC | 2.1ml | 122 km SW of Nikolski, Alaska 52.213°, -170.213° | 22.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 122 km SW of Nikolski, Alaska with origin time 20:04 UTC on July 18, 2023. It arrived roughly 13 hours after a larger magnitude 2.9 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. | ||||||||
2023-07-18 2023-07-18 19:51:44 UTC | 4.7mb | 136 km S of ?Ohonua, Tonga -22.571°, -174.940° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:51 UTC on July 18, 2023, a magnitude 4.7 tremor occurred 136 km S of ?Ohonua, Tonga. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 19:36:32 UTC | 3.1ml | 16 km ESE of Wright, Wyoming 43.699°, -105.296° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:36 UTC on July 18, 2023, a magnitude 3.1 tremor occurred 16 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. | ||||||||
2023-07-18 2023-07-18 19:34:00 UTC | 4.5mb | 136 km SW of Lata, Solomon Islands -11.514°, 164.841° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
July 18, 2023 brought a magnitude 4.5 earthquake 136 km SW of Lata, Solomon Islands, logged at 19:34 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 19:07:04 UTC | 4.4mb | 44 km NW of Abepura, Indonesia -2.351°, 140.319° | 22.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 44 km NW of Abepura, Indonesia on July 18, 2023 at 19:07 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 19:00:09 UTC | 3.3ml | 41 km E of King Cove, Alaska 55.042°, -161.670° | 71.1 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023, worldwide seismic activity registered a magnitude 3.3 earthquake 41 km E of King Cove, Alaska at 19:00 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 18:56:01 UTC | 4.1mb | 63 km E of Sungai Penuh, Indonesia -2.164°, 101.952° | 205.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 63 km E of Sungai Penuh, Indonesia on July 18, 2023 at 18:56 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 18:45:23 UTC | 4.2mb | 152 km NW of Amahai, Indonesia -2.299°, 128.016° | 26.3 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023, worldwide seismic activity registered a magnitude 4.2 earthquake 152 km NW of Amahai, Indonesia at 18:45 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 18:19:07 UTC | 4.8mb | Mid-Indian Ridge -38.584°, 78.372° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.8 earthquake was recorded near Mid-Indian Ridge on July 18, 2023 at 18:19 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 18:05:29 UTC | 4.1mb | 238 km SSW of Severo-Kuril’sk, Russia 48.793°, 154.544° | 73.3 km | - | - | - | ✓ Reviewed | USGS → |
July 18, 2023 brought a magnitude 4.1 earthquake 238 km SSW of Severo-Kuril’sk, Russia, logged at 18:05 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 17:59:50 UTC | 2.0ml | 18km W of Malibu, CA 34.024°, -119.006° | 14.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 18km W of Malibu, CA came in on July 18, 2023 at 17:59 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 17:46:11 UTC | 4.1mb | 119 km ESE of Shikotan, Russia 43.291°, 148.027° | 40.5 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 17:46 UTC, a magnitude 4.1 earthquake struck 119 km ESE of Shikotan, Russia. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 17:19:35 UTC | 4.1mb | Fiji region -19.218°, -177.386° | 533.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded in the Fiji region on July 18, 2023 at 17:19 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 17:16:28 UTC | 2.9ml | 184 km SSE of Atka, Alaska 50.615°, -173.400° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 17:16 UTC, a magnitude 2.9 earthquake struck 184 km SSE of Atka, Alaska. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-18 2023-07-18 17:12:57 UTC | 2.0md | 6 km ENE of Pinnacles, CA 36.554°, -121.084° | 9.7 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2023 at 17:12 UTC, a magnitude 2.0 earthquake struck 6 km ENE of Pinnacles, CA. Coming 17 hours after a magnitude 2.3 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. | ||||||||
2023-07-18 2023-07-18 16:03:34 UTC | 2.0ml | 92 km NW of Skwentna, Alaska 62.557°, -152.705° | 0.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 92 km NW of Skwentna, Alaska on July 18, 2023 at 16:03 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. | ||||||||
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 18, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.