Earthquakes on June 21, 2023
271
EARTHQUAKES on June 21, 2023
24-hour UTC period · USGS data
LARGEST: M5.5 — southern Mid-Atlantic Ridge
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
41
M3.0–3.9
13
M2.0–2.9
51
M1.0–1.9
164
Activity Summary
271
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
southern Mid-Atlantic Ridge
04:10 UTC · 10.0 km deep
5.2
South Sandwich Islands region
15:24 UTC · 10.0 km deep
4.9
Kermadec Islands region
05:43 UTC · 10.0 km deep
4.9
36 km SSE of Ḩājjīābād, Iran
05:12 UTC · 10.0 km deep
Felt by 2
4.9
125 km ESE of Kimbe, Papua New Guinea
02:20 UTC · 10.0 km deep
4.8
Kermadec Islands region
10:08 UTC · 10.0 km deep
4.7
120 km SSE of Lata, Solomon Islands
13:54 UTC · 60.1 km deep
4.7
south of Tonga
03:38 UTC · 10.0 km deep
Earthquake Map — June 21, 2023
All Earthquakes — June 21, 2023
Showing 30 of 107 (filtered from 271)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-06-21 2023-06-21 23:57:02 UTC | 4.5mb | 133 km SSE of Alo, Wallis and Futuna -15.339°, -177.463° | 9.5 km | - | - | - | ✓ Reviewed | USGS → |
At 23:57 UTC on June 21, 2023, a magnitude 4.5 tremor occurred 133 km SSE of Alo, Wallis and Futuna. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 23:55:51 UTC | 4.4mb | 128 km SE of Alo, Wallis and Futuna -15.226°, -177.382° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 128 km SE of Alo, Wallis and Futuna with origin time 23:55 UTC on June 21, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 23:33:36 UTC | 2.6ml | 59 km SSE of Adak, Alaska 51.425°, -176.172° | 33.6 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2023 brought a magnitude 2.6 earthquake 59 km SSE of Adak, Alaska, logged at 23:33 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 23:29:25 UTC | 4.4mb | 98 km ESE of Kokopo, Papua New Guinea -4.771°, 153.047° | 57.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake 98 km ESE of Kokopo, Papua New Guinea at 23:29 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 23:14:44 UTC | 2.0ml | 96 km WSW of Adak, Alaska 51.458°, -177.865° | 53.1 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2023 at 23:14 UTC, a magnitude 2.0 earthquake struck 96 km WSW of Adak, Alaska. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 22:54:33 UTC | 2.3md | 1 km NNW of Indios, Puerto Rico 18.006°, -66.824° | 14.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 1 km NNW of Indios, Puerto Rico on June 21, 2023, with origin time 22:54 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 22:18:47 UTC | 2.0ml | 105 km NNE of Arctic Village, Alaska 68.986°, -144.470° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 105 km NNE of Arctic Village, Alaska on June 21, 2023 at 22:18 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 22:10:52 UTC | 4.2mb | 73 km NNW of St George Ranges, Australia -18.352°, 124.803° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 73 km NNW of St George Ranges, Australia on June 21, 2023, with origin time 22:10 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:58:34 UTC | 2.5ml | 194 km WSW of Adak, Alaska 51.275°, -179.269° | 30.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 194 km WSW of Adak, Alaska on June 21, 2023, with origin time 21:58 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:58:31 UTC | 4.3mb | 120 km SE of Pyapon, Myanmar 15.420°, 96.356° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2023 at 21:58 UTC, a magnitude 4.3 earthquake struck 120 km SE of Pyapon, Myanmar. It arrived roughly 4 hours after a larger magnitude 4.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:22:06 UTC | 4.4mb | 145 km SE of Pyapon, Myanmar 15.226°, 96.482° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:22 UTC on June 21, 2023, a magnitude 4.4 tremor occurred 145 km SE of Pyapon, Myanmar. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:03:30 UTC | 2.6ml | 191 km SE of Perryville, Alaska 54.763°, -156.894° | 26.3 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2023 at 21:03 UTC, a magnitude 2.6 earthquake struck 191 km SE of Perryville, Alaska. It arrived roughly 1 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:01:18 UTC | 2.5ml | 3 km SW of Lake Shore, Washington 45.673°, -122.725° | 19.5 km | 26 | - | - | ✓ Reviewed | USGS → |
On June 21, 2023 at 21:01 UTC, a magnitude 2.5 earthquake struck 3 km SW of Lake Shore, Washington. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:00:29 UTC | 4.5mb | Kermadec Islands, New Zealand -29.749°, -177.410° | 55.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake near Kermadec Islands, New Zealand at 21:00 UTC on June 21, 2023. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 21:00:12 UTC | 2.0ml | 20 km SE of Midland, Texas 31.887°, -101.907° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 20 km SE of Midland, Texas with origin time 21:00 UTC on June 21, 2023. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:45:10 UTC | 3.1ml | 197 km SE of Perryville, Alaska 54.727°, -156.834° | 14.7 km | 1 | - | - | ✓ Reviewed | USGS → |
On June 21, 2023 at 20:45 UTC, a magnitude 3.1 earthquake struck 197 km SE of Perryville, Alaska. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:38:06 UTC | 3.1ml | 193 km SE of Perryville, Alaska 54.726°, -156.917° | 15.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 193 km SE of Perryville, Alaska on June 21, 2023 at 20:38 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:35:34 UTC | 3.0ml | 100 km WSW of Nikolski, Alaska 52.566°, -170.218° | 106.7 km | - | - | - | ✓ Reviewed | USGS → |
At 20:35 UTC on June 21, 2023, a magnitude 3.0 tremor occurred 100 km WSW of Nikolski, Alaska. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:28:23 UTC | 2.3ml | 4km SE of San Clemente Is. (SE tip), CA 32.794°, -118.316° | 5.8 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2023 brought a magnitude 2.3 earthquake 4km SE of San Clemente Is. (SE tip), CA, logged at 20:28 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:18:59 UTC | 2.6ml | 189 km SE of Perryville, Alaska 54.754°, -156.949° | 16.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 189 km SE of Perryville, Alaska on June 21, 2023 at 20:18 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:17:09 UTC | 2.4ml | 17 km E of Moose Pass, Alaska 60.504°, -149.059° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 17 km E of Moose Pass, Alaska on June 21, 2023 at 20:17 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:08:20 UTC | 4.3mb | 246 km SSW of ‘Ohonua, Tonga -23.476°, -175.620° | 30.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 246 km SSW of ‘Ohonua, Tonga on June 21, 2023 at 20:08 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 20:05:59 UTC | 3.8md | 38 km N of Charlotte Amalie, U.S. Virgin Islands 18.689°, -64.954° | 57.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.8 earthquake 38 km N of Charlotte Amalie, U.S. Virgin Islands at 20:05 UTC on June 21, 2023. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 19:37:39 UTC | 2.1ml | 94 km ENE of Ouzinkie, Alaska 58.198°, -150.994° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 94 km ENE of Ouzinkie, Alaska on June 21, 2023 at 19:37 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 19:34:52 UTC | 2.3ml | 15 km ESE of Stinnett, Texas 35.798°, -101.280° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 15 km ESE of Stinnett, Texas came in on June 21, 2023 at 19:34 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 19:05:57 UTC | 4.3mb | 213 km N of Baukau, Timor Leste -6.553°, 126.611° | 442.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 213 km N of Baukau, Timor Leste with origin time 19:05 UTC on June 21, 2023. 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. | ||||||||
2023-06-21 2023-06-21 18:57:18 UTC | 4.2mb | 33 km NNW of Atka, Alaska 52.455°, -174.441° | 188.5 km | - | I | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 33 km NNW of Atka, Alaska came in on June 21, 2023 at 18:57 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 18:56:01 UTC | 2.1md | 21km E of Navarro Head, CA 39.195°, -123.516° | 0.8 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2023 brought a magnitude 2.1 earthquake 21km E of Navarro Head, CA, logged at 18:56 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. | ||||||||
2023-06-21 2023-06-21 18:26:27 UTC | 4.4mb | 130 km SE of Pyapon, Myanmar 15.313°, 96.371° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 130 km SE of Pyapon, Myanmar at 18:26 UTC on June 21, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-06-21 2023-06-21 18:24:03 UTC | 3.0ml | 161 km WSW of Nikolski, Alaska 52.213°, -170.928° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 161 km WSW of Nikolski, Alaska at 18:24 UTC on June 21, 2023. See the M3.0 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 June 21, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.