Earthquakes on August 21, 2024
361
EARTHQUAKES on August 21, 2024
24-hour UTC period · USGS data
30 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
44
M3.0–3.9
5
M2.0–2.9
70
M1.0–1.9
237
Activity Summary
361
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
102 km ESE of Petropavlovsk-Kamchatsky, Russia
23:30 UTC · 30.0 km deep
5.5
29 km W of La Quiaca, Argentina
06:55 UTC · 258.2 km deep
Felt by 2
5.1
124 km SE of Kuqa, China
23:38 UTC · 10.0 km deep
5.1
south of the Fiji Islands
08:06 UTC · 578.9 km deep
5.0
southern Mid-Atlantic Ridge
06:09 UTC · 10.0 km deep
4.9
98 km S of Puerto San José, Guatemala
17:55 UTC · 10.0 km deep
4.8
89 km SSW of Corinto, Nicaragua
14:13 UTC · 34.8 km deep
4.8
139 km S of Praya, Indonesia
11:58 UTC · 50.0 km deep
Felt by 14
Earthquake Map — August 21, 2024
All Earthquakes — August 21, 2024
Showing 30 of 124 (filtered from 361)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2024-08-21 2024-08-21 23:59:00 UTC | 2.1ml | 7 km SSW of Volcano, Hawaii 19.379°, -155.259° | 0.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 7 km SSW of Volcano, Hawaii on August 21, 2024, with origin time 23:59 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 17 hours earlier. 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. | ||||||||
2024-08-21 2024-08-21 23:38:00 UTC | 5.1mb | 124 km SE of Kuqa, China 40.929°, 83.994° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake 124 km SE of Kuqa, China with origin time 23:38 UTC on August 21, 2024. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 23:30:34 UTC | 5.5mww | 102 km ESE of Petropavlovsk-Kamchatsky, Russia 52.883°, 160.127° | 30.0 km | - | IV | green | ✓ Reviewed | USGS → |
On August 21, 2024 at 23:30 UTC, a magnitude 5.5 earthquake struck 102 km ESE of Petropavlovsk-Kamchatsky, Russia. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on August 21, 2024. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 23:17:20 UTC | 2.7ml | 11 km NE of Pāhala, Hawaii 19.279°, -155.405° | 30.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 11 km NE of Pāhala, Hawaii on August 21, 2024, with origin time 23:17 UTC. It arrived roughly 16 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 23:17:16 UTC | 2.2ml | 7 km SSE of Volcano, Hawaii 19.375°, -155.208° | 2.2 km | - | - | - | ✓ Reviewed | USGS → |
At 23:17 UTC on August 21, 2024, a magnitude 2.2 tremor occurred 7 km SSE of Volcano, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 16 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 22:20:11 UTC | 2.5ml | 6 km S of Volcano, Hawaii 19.385°, -155.242° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
At 22:20 UTC on August 21, 2024, a magnitude 2.5 tremor occurred 6 km S of Volcano, Hawaii. Coming 15 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2024-08-21 2024-08-21 21:47:44 UTC | 4.3mb | 154 km E of Petropavlovsk-Kamchatsky, Russia 52.815°, 160.894° | 48.7 km | - | - | - | ✓ Reviewed | USGS → |
At 21:47 UTC on August 21, 2024, a magnitude 4.3 tremor occurred 154 km E of Petropavlovsk-Kamchatsky, Russia. This event falls inside the aftershock decay of a nearby magnitude 4.7 earthquake that occurred about 13 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 21:20:05 UTC | 2.2md | 1 km SSW of Pāhala, Hawaii 19.191°, -155.484° | 31.9 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 1 km SSW of Pāhala, Hawaii came in on August 21, 2024 at 21:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 14 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 21:14:38 UTC | 4.4mb | 121 km SSE of Kyzyl-Suu, Kyrgyzstan 41.387°, 78.732° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 21, 2024 at 21:14 UTC, a magnitude 4.4 earthquake struck 121 km SSE of Kyzyl-Suu, Kyrgyzstan. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 21:05:35 UTC | 4.4mb | 34 km SSE of Akkeshi, Japan 42.772°, 145.072° | 80.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 34 km SSE of Akkeshi, Japan on August 21, 2024 at 21:05 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 20:16:13 UTC | 2.1md | 17 km SW of Volcano, Hawaii 19.351°, -155.368° | 28.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 17 km SW of Volcano, Hawaii on August 21, 2024, with origin time 20:16 UTC. Coming 13 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 19:34:31 UTC | 4.4mb | southeast Indian Ridge -48.120°, 104.041° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake near southeast Indian Ridge with origin time 19:34 UTC on August 21, 2024. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 19:05:23 UTC | 4.2mb | 7 km WSW of Yanaca, Peru -14.239°, -73.224° | 76.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 21, 2024, worldwide seismic activity registered a magnitude 4.2 earthquake 7 km WSW of Yanaca, Peru at 19:05 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 19:01:44 UTC | 4.4mb | 26 km SSE of Fannūj, Iran 26.377°, 59.779° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 21, 2024, worldwide seismic activity registered a magnitude 4.4 earthquake 26 km SSE of Fannūj, Iran at 19:01 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 18:48:57 UTC | 2.0ml | 69 km W of Hooper, Utah 41.163°, -112.947° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 69 km W of Hooper, Utah on August 21, 2024 at 18:48 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. | ||||||||
2024-08-21 2024-08-21 18:37:31 UTC | 4.4mb | 24 km NE of Santa Monica, Philippines 10.152°, 126.214° | 65.5 km | - | - | - | ✓ Reviewed | USGS → |
At 18:37 UTC on August 21, 2024, a magnitude 4.4 tremor occurred 24 km NE of Santa Monica, Philippines. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 18:37:09 UTC | 2.6ml | 6 km S of Volcano, Hawaii 19.385°, -155.243° | 1.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 21, 2024 at 18:37 UTC, a magnitude 2.6 earthquake struck 6 km S of Volcano, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 11 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 18:08:02 UTC | 4.4mb | 184 km ESE of Saipan, Northern Mariana Islands 14.592°, 147.346° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 184 km ESE of Saipan, Northern Mariana Islands at 18:08 UTC on August 21, 2024. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 18:07:23 UTC | 4.5mb | 168 km NW of Sola, Vanuatu -12.900°, 166.358° | 63.8 km | - | - | - | ✓ Reviewed | USGS → |
At 18:07 UTC on August 21, 2024, a magnitude 4.5 tremor occurred 168 km NW of Sola, Vanuatu. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 18:01:01 UTC | 2.4ml | 31 km ESE of Akhiok, Alaska 56.818°, -153.705° | 36.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 31 km ESE of Akhiok, Alaska on August 21, 2024 at 18:01 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 17:55:41 UTC | 4.9mww | 98 km S of Puerto San José, Guatemala 13.038°, -90.747° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.9 earthquake 98 km S of Puerto San José, Guatemala at 17:55 UTC on August 21, 2024. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 17:52:58 UTC | 2.2ml | 7 km S of Volcano, Hawaii 19.375°, -155.232° | 1.8 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 7 km S of Volcano, Hawaii on August 21, 2024 at 17:52 UTC. Coming 10 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 17:45:38 UTC | 4.4mb | 101 km ESE of Ozernovskiy, Russia 51.283°, 157.921° | 67.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 101 km ESE of Ozernovskiy, Russia on August 21, 2024, with origin time 17:45 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 17:10:36 UTC | 2.1ml | 8 km S of Volcano, Hawaii 19.371°, -155.241° | -0.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 21, 2024, worldwide seismic activity registered a magnitude 2.1 earthquake 8 km S of Volcano, Hawaii at 17:10 UTC. Coming 10 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2024-08-21 2024-08-21 17:00:32 UTC | 4.4mb | 76 km SW of Atocha, Bolivia -21.402°, -66.767° | 205.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 76 km SW of Atocha, Bolivia came in on August 21, 2024 at 17:00 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 16:52:25 UTC | 3.6mb | 17 km NNE of Uri, India 34.232°, 74.105° | 10.0 km | 8 | - | - | ✓ Reviewed | USGS → |
On August 21, 2024 at 16:52 UTC, a magnitude 3.6 earthquake struck 17 km NNE of Uri, India. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 16:49:53 UTC | 2.4ml | 5 km SSW of Volcano, Hawaii 19.391°, -155.250° | 1.4 km | - | - | - | ✓ Reviewed | USGS → |
August 21, 2024 brought a magnitude 2.4 earthquake 5 km SSW of Volcano, Hawaii, logged at 16:49 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 9 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 16:45:24 UTC | 4.5mb | 184 km NNE of Bamboo Flat, India 13.321°, 93.122° | 27.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake 184 km NNE of Bamboo Flat, India at 16:45 UTC on August 21, 2024. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 16:37:14 UTC | 2.9ml | 37 km NW of Atka, Alaska 52.423°, -174.609° | 175.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 37 km NW of Atka, Alaska at 16:37 UTC on August 21, 2024. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2024-08-21 2024-08-21 16:34:33 UTC | 2.5ml | 202 km W of Adak, Alaska 51.678°, -179.552° | 88.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 202 km W of Adak, Alaska at 16:34 UTC on August 21, 2024. The event was offshore. See the M2.5 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 August 21, 2024. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.