Earthquakes on August 5, 2021
412
EARTHQUAKES on August 5, 2021
24-hour UTC period · USGS data
541 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
26
M3.0–3.9
36
M2.0–2.9
105
M1.0–1.9
241
Activity Summary
412
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
131 km NNE of Maumere, Indonesia
05:06 UTC · 540.8 km deep
5.3
south of the Fiji Islands
11:20 UTC · 537.4 km deep
5.1
Nicobar Islands, India region
12:46 UTC · 20.3 km deep
5.0
Banda Sea
14:24 UTC · 117.4 km deep
Felt by 1
4.8
Southwest Indian Ridge
22:24 UTC · 10.0 km deep
4.7
southwest of Africa
20:55 UTC · 10.0 km deep
4.7
181 km ENE of Angoram, Papua New Guinea
19:51 UTC · 10.0 km deep
4.7
Kermadec Islands region
18:41 UTC · 10.0 km deep
Earthquake Map — August 5, 2021
All Earthquakes — August 5, 2021
Showing 30 of 171 (filtered from 412)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-08-05 2021-08-05 23:55:53 UTC | 2.5ml | 61 km SE of Perryville, Alaska 55.516°, -158.457° | 13.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 61 km SE of Perryville, Alaska on August 5, 2021, with origin time 23:55 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:46:46 UTC | 2.0ml | 143 km SSE of False Pass, Alaska 53.624°, -162.768° | 24.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 143 km SSE of False Pass, Alaska on August 5, 2021 at 23:46 UTC. Coming 15 hours after a magnitude 3.7 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. | ||||||||
2021-08-05 2021-08-05 23:36:13 UTC | 2.6ml | 51 km NW of Toyah, Texas 31.595°, -104.223° | 7.4 km | 1 | - | - | ✓ Reviewed | USGS → |
August 5, 2021 brought a magnitude 2.6 earthquake 51 km NW of Toyah, Texas, logged at 23:36 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:25:55 UTC | 3.5mb | 168 km SSE of False Pass, Alaska 53.400°, -162.693° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.5 event was detected 168 km SSE of False Pass, Alaska on August 5, 2021, with origin time 23:25 UTC. It arrived roughly 15 hours after a larger magnitude 3.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:25:16 UTC | 2.7md | 5 km WSW of La Parguera, Puerto Rico 17.949°, -67.096° | 12.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 5 km WSW of La Parguera, Puerto Rico came in on August 5, 2021 at 23:25 UTC. It arrived roughly 23 hours after a larger magnitude 3.4 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:19:05 UTC | 2.0ml | 162 km SSE of False Pass, Alaska 53.482°, -162.543° | 26.2 km | - | - | - | ✓ Reviewed | USGS → |
August 5, 2021 brought a magnitude 2.0 earthquake 162 km SSE of False Pass, Alaska, logged at 23:19 UTC. It arrived roughly 15 hours after a larger magnitude 3.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:11:47 UTC | 3.4ml | south of Alaska 53.514°, -162.749° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 5, 2021 at 23:11 UTC, a magnitude 3.4 earthquake struck south of Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.7 earthquake that occurred about 15 hours earlier. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 23:08:00 UTC | 3.2md | 4 km WSW of La Parguera, Puerto Rico 17.962°, -67.090° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 5, 2021 at 23:08 UTC, a magnitude 3.2 earthquake struck 4 km WSW of La Parguera, Puerto Rico. Coming 22 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 22:42:31 UTC | 2.0ml | 47 km WSW of Tatitlek, Alaska 60.671°, -147.456° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 5, 2021 at 22:42 UTC, a magnitude 2.0 earthquake struck 47 km WSW of Tatitlek, Alaska. 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. | ||||||||
2021-08-05 2021-08-05 22:36:09 UTC | 4.5mb | 19 km SSE of La Huaca, Peru -5.059°, -80.868° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 19 km SSE of La Huaca, Peru on August 5, 2021 at 22:36 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 22:33:35 UTC | 4.1mb | 141 km WSW of Ternate, Indonesia 0.141°, 126.287° | 27.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 141 km WSW of Ternate, Indonesia on August 5, 2021 at 22:33 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 22:24:27 UTC | 4.8mb | Southwest Indian Ridge -29.214°, 60.880° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:24 UTC on August 5, 2021, a magnitude 4.8 tremor occurred near Southwest Indian Ridge. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 21:53:24 UTC | 2.1ml | 8 km SSE of Volcano, Hawaii 19.368°, -155.213° | 2.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 8 km SSE of Volcano, Hawaii at 21:53 UTC on August 5, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 2 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. | ||||||||
2021-08-05 2021-08-05 21:42:55 UTC | 3.5ml | 246 km SSW of Akhiok, Alaska 54.821°, -155.276° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.5 earthquake 246 km SSW of Akhiok, Alaska came in on August 5, 2021 at 21:42 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 21:23:20 UTC | 3.4ml | south of Alaska 54.889°, -155.387° | 11.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded south of Alaska on August 5, 2021 at 21:23 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 21:20:24 UTC | 2.2md | 7 km SW of Volcano, Hawaii 19.403°, -155.288° | 0.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 7 km SW of Volcano, Hawaii with origin time 21:20 UTC on August 5, 2021. It arrived roughly 2 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2021-08-05 2021-08-05 21:13:18 UTC | 2.2ml | 6 km E of Washington, Utah 37.130°, -113.439° | 13.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 5, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 6 km E of Washington, Utah at 21:13 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 21:10:12 UTC | 4.5mb | 90 km NE of Hasaki, Japan 36.267°, 141.592° | 35.0 km | 1 | - | - | ✓ Reviewed | USGS → |
August 5, 2021 brought a magnitude 4.5 earthquake 90 km NE of Hasaki, Japan, logged at 21:10 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 21:01:27 UTC | 4.4mb | South Sandwich Islands region -55.575°, -27.869° | 20.2 km | - | - | - | ✓ Reviewed | USGS → |
At 21:01 UTC on August 5, 2021, a magnitude 4.4 tremor occurred in the South Sandwich Islands region. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 20:55:01 UTC | 4.7mb | southwest of Africa -52.722°, 18.710° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.7 earthquake southwest of Africa at 20:55 UTC on August 5, 2021. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 20:51:21 UTC | 2.1ml | 3 km WNW of Volcano, Hawaii 19.457°, -155.263° | -0.8 km | - | - | - | Auto | USGS → |
A magnitude 2.1 seismic event took place 3 km WNW of Volcano, Hawaii on August 5, 2021 at 20:51 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 1 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. | ||||||||
2021-08-05 2021-08-05 20:47:11 UTC | 2.7ml | south of Alaska 55.682°, -156.248° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake south of Alaska came in on August 5, 2021 at 20:47 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 20:15:19 UTC | 2.3ml | 3 km SE of P?hala, Hawaii 19.177°, -155.458° | 37.6 km | - | - | - | Auto | USGS → |
At 20:15 UTC on August 5, 2021, a magnitude 2.3 tremor occurred 3 km SE of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 4 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 20:01:59 UTC | 2.0ml | 1 km NNW of Cooper Landing, Alaska 60.500°, -149.833° | 33.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 1 km NNW of Cooper Landing, Alaska on August 5, 2021 at 20:01 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:52:39 UTC | 3.0ml | 244 km SSW of Akhiok, Alaska 54.836°, -155.238° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 seismic event took place 244 km SSW of Akhiok, Alaska on August 5, 2021 at 19:52 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 17 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:51:23 UTC | 4.7mb | 181 km ENE of Angoram, Papua New Guinea -3.370°, 145.544° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 181 km ENE of Angoram, Papua New Guinea on August 5, 2021, with origin time 19:51 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:45:07 UTC | 3.8md | 25 km SSE of Punta Cana, Dominican Republic 18.361°, -68.339° | 58.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.8 earthquake 25 km SSE of Punta Cana, Dominican Republic with origin time 19:45 UTC on August 5, 2021. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:33:49 UTC | 2.6ml | 125 km ESE of Chignik, Alaska 55.966°, -156.472° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 5, 2021 at 19:33 UTC, a magnitude 2.6 earthquake struck 125 km ESE of Chignik, Alaska. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:32:37 UTC | 2.5ml | 7 km SW of Volcano, Hawaii 19.393°, -155.275° | 1.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 7 km SW of Volcano, Hawaii at 19:32 UTC on August 5, 2021. In the 72 hours after this event, the USGS recorded 7 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-05 2021-08-05 19:23:39 UTC | 2.6ml | 21 km WNW of Stanley, Idaho 44.279°, -115.192° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 21 km WNW of Stanley, Idaho on August 5, 2021 at 19:23 UTC. See the M2.6 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 5, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.