Earthquakes on June 18, 2023
243
EARTHQUAKES on June 18, 2023
24-hour UTC period · USGS data
LARGEST: M6.4 — Gulf of California
4 km deep · 27 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
12
M4.0–4.9
33
M3.0–3.9
9
M2.0–2.9
47
M1.0–1.9
142
Activity Summary
243
Total earthquakes
~250
Daily average
Normal
Activity level
12
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.4
Gulf of California
20:30 UTC · 4.0 km deep
Felt by 27
6.0
south of Africa
21:59 UTC · 8.0 km deep
5.9
291 km SSW of ‘Ohonua, Tonga
15:04 UTC · 10.0 km deep
5.7
Tonga region
14:29 UTC · 10.0 km deep
5.3
40 km ENE of Luganville, Vanuatu
09:59 UTC · 118.5 km deep
Felt by 1
5.2
286 km SSW of ‘Ohonua, Tonga
17:16 UTC · 10.0 km deep
5.1
32 km NE of Santa Monica, Philippines
17:34 UTC · 41.7 km deep
05.1
Tonga region
14:28 UTC · 10.0 km deep
Earthquake Map — June 18, 2023
All Earthquakes — June 18, 2023
Showing 30 of 101 (filtered from 243)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-06-18 2023-06-18 23:53:14 UTC | 3.0ml | 14km SSW of Searles Valley, CA 35.664°, -117.483° | 6.7 km | 2 | - | - | ✓ Reviewed | USGS → |
At 23:53 UTC on June 18, 2023, a magnitude 3.0 tremor occurred 14km SSW of Searles Valley, CA. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 23:49:45 UTC | 2.3ml | 54 km NW of Toyah, Texas 31.671°, -104.190° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 54 km NW of Toyah, Texas at 23:49 UTC on June 18, 2023. It arrived roughly 7 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 23:25:31 UTC | 3.7mb | Unimak Island region, Alaska 54.014°, -163.673° | 57.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.7 earthquake in the Unimak Island region, Alaska came in on June 18, 2023 at 23:25 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:51:00 UTC | 2.1md | 5km W of Hillsborough, CA 37.566°, -122.437° | 11.1 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:51 UTC on June 18, 2023, a magnitude 2.1 tremor occurred 5km W of Hillsborough, CA. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:50:44 UTC | 2.3ml | 40 km WNW of Skwentna, Alaska 62.157°, -152.087° | 103.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 40 km WNW of Skwentna, Alaska on June 18, 2023, with origin time 22:50 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:36:31 UTC | 2.2ml | 22 km WNW of Mentone, Texas 31.761°, -103.824° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 22 km WNW of Mentone, Texas at 22:36 UTC on June 18, 2023. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:29:19 UTC | 2.1ml | southern Idaho 43.888°, -115.004° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded near southern Idaho on June 18, 2023 at 22:29 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 9 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:17:34 UTC | 3.9mb | 61 km E of Khorugh, Tajikistan 37.558°, 72.248° | 187.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.9 earthquake 61 km E of Khorugh, Tajikistan at 22:17 UTC on June 18, 2023. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 22:16:01 UTC | 3.4md | 89 km NNE of Punta Cana, Dominican Republic 19.273°, -67.957° | 26.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded 89 km NNE of Punta Cana, Dominican Republic on June 18, 2023 at 22:16 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 21:59:17 UTC | 6.0mww | south of Africa -48.673°, 31.132° | 8.0 km | - | - | green | ✓ Reviewed | USGS → |
A magnitude 6.0 earthquake was recorded south of Africa on June 18, 2023 at 21:59 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M6.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 21:26:30 UTC | 4.0mb | south of Tonga -24.208°, -175.379° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:26 UTC on June 18, 2023, a magnitude 4.0 tremor occurred south of Tonga. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 21:08:14 UTC | 2.0ml | 6 km S of Princeton, Canada 49.397°, -120.497° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 6 km S of Princeton, Canada at 21:08 UTC on June 18, 2023. 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. | ||||||||
2023-06-18 2023-06-18 20:59:23 UTC | 4.2mb | 22 km SE of Saimbeyli, Turkey 37.841°, 36.262° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
June 18, 2023 brought a magnitude 4.2 earthquake 22 km SE of Saimbeyli, Turkey, logged at 20:59 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 20:57:39 UTC | 2.0ml | 8 km SW of El Reno, Oklahoma 35.474°, -98.019° | 5.5 km | 3 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 8 km SW of El Reno, Oklahoma on June 18, 2023, with origin time 20:57 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 20:52:53 UTC | 2.6md | 4 km S of Pāhala, Hawaii 19.163°, -155.486° | 31.3 km | - | - | - | ✓ Reviewed | USGS → |
June 18, 2023 brought a magnitude 2.6 earthquake 4 km S of Pāhala, Hawaii, logged at 20:52 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 20:37:01 UTC | 4.4mb | 49 km SE of Kushima, Japan 31.125°, 131.551° | 45.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 49 km SE of Kushima, Japan came in on June 18, 2023 at 20:37 UTC. It arrived roughly 4 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 20:30:21 UTC | 6.4mww | Gulf of California 23.167°, -108.692° | 4.0 km | 27 | IV | green | ✓ Reviewed | USGS → |
On June 18, 2023 at 20:30 UTC, a magnitude 6.4 earthquake struck near Gulf of California. A tsunami evaluation was automatically initiated given the magnitude and location. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M6.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 20:21:06 UTC | 2.6ml | 40 km WSW of Noatak, Alaska 67.388°, -163.774° | 10.8 km | - | - | - | ✓ Reviewed | USGS → |
On June 18, 2023 at 20:21 UTC, a magnitude 2.6 earthquake struck 40 km WSW of Noatak, Alaska. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 19:18:37 UTC | 2.5md | 24km ENE of San Ardo, CA 36.077°, -120.647° | 2.9 km | 2 | - | - | ✓ Reviewed | USGS → |
June 18, 2023 brought a magnitude 2.5 earthquake 24km ENE of San Ardo, CA, logged at 19:18 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 18:31:59 UTC | 2.6md | 2 km WNW of Sabana Grande, Puerto Rico 18.083°, -66.982° | 13.5 km | - | - | - | ✓ Reviewed | USGS → |
At 18:31 UTC on June 18, 2023, a magnitude 2.6 tremor occurred 2 km WNW of Sabana Grande, Puerto Rico. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:57:44 UTC | 4.5mb | Kepulauan Barat Daya, Indonesia -7.579°, 127.664° | 144.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded near Kepulauan Barat Daya, Indonesia on June 18, 2023 at 17:57 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:57:41 UTC | 2.0ml | Rat Islands, Aleutian Islands, Alaska 51.361°, 179.812° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place near Rat Islands, Aleutian Islands, Alaska on June 18, 2023 at 17:57 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:47:02 UTC | 3.5ml | 77 km SSE of Sand Point, Alaska 54.721°, -159.929° | 32.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 18, 2023 at 17:47 UTC, a magnitude 3.5 earthquake struck 77 km SSE of Sand Point, Alaska. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:42:23 UTC | 2.6ml | 197 km SE of Chignik, Alaska 54.957°, -156.340° | 12.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 197 km SE of Chignik, Alaska on June 18, 2023 at 17:42 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:34:00 UTC | 5.1mww | 32 km NE of Santa Monica, Philippines 10.233°, 126.248° | 41.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 5.1 event was detected 32 km NE of Santa Monica, Philippines on June 18, 2023, with origin time 17:34 UTC. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:16:28 UTC | 5.2mww | 286 km SSW of ‘Ohonua, Tonga -23.804°, -175.802° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.2 earthquake 286 km SSW of ‘Ohonua, Tonga at 17:16 UTC on June 18, 2023. Coming 2 hours after a magnitude 5.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 17:02:50 UTC | 4.6mb | 287 km SSW of ‘Ohonua, Tonga -23.800°, -175.861° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 287 km SSW of ‘Ohonua, Tonga on June 18, 2023 at 17:02 UTC. It arrived roughly 2 hours after a larger magnitude 5.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 16:58:44 UTC | 4.8mb | 44 km SE of Kushima, Japan 31.192°, 131.559° | 35.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 16:58 UTC on June 18, 2023, a magnitude 4.8 tremor occurred 44 km SE of Kushima, Japan. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 16:49:34 UTC | 2.4ml | 50 km W of Mentone, Texas 31.695°, -104.136° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
On June 18, 2023 at 16:49 UTC, a magnitude 2.4 earthquake struck 50 km W of Mentone, Texas. 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-18 2023-06-18 16:34:49 UTC | 4.2mb | 39 km SSW of Duki, Pakistan 29.824°, 68.407° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 18, 2023 at 16:34 UTC, a magnitude 4.2 earthquake struck 39 km SSW of Duki, Pakistan. See the M4.2 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 June 18, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.