Earthquakes on August 7, 2021
267
EARTHQUAKES on August 7, 2021
24-hour UTC period · USGS data
58 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
31
M3.0–3.9
7
M2.0–2.9
73
M1.0–1.9
152
Activity Summary
267
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.3
96 km WNW of Kirakira, Solomon Islands
14:51 UTC · 57.7 km deep
5.2
87 km NE of Calama, Chile
18:31 UTC · 136.9 km deep
Felt by 8
5.0
102 km SSE of Hihifo, Tonga
23:16 UTC · 35.0 km deep
5.0
38 km SSW of Mandráki, Greece
01:39 UTC · 18.4 km deep
Felt by 4
4.9
70 km NW of Port-Vila, Vanuatu
19:53 UTC · 25.7 km deep
4.9
Prince Edward Islands region
13:42 UTC · 10.0 km deep
4.9
138 km WNW of Port-Vila, Vanuatu
00:45 UTC · 9.3 km deep
4.8
South Sandwich Islands region
09:58 UTC · 38.0 km deep
Earthquake Map — August 7, 2021
All Earthquakes — August 7, 2021
Showing 30 of 115 (filtered from 267)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-08-07 2021-08-07 23:59:14 UTC | 2.0ml | 73 km S of King Cove, Alaska 54.398°, -162.293° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 73 km S of King Cove, Alaska came in on August 7, 2021 at 23:59 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. | ||||||||
2021-08-07 2021-08-07 23:39:42 UTC | 4.3mb | 106 km W of San Antonio de los Cobres, Argentina -24.315°, -67.358° | 191.1 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 106 km W of San Antonio de los Cobres, Argentina with origin time 23:39 UTC on August 7, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:32:41 UTC | 2.0md | Island of Hawaii, Hawaii 19.389°, -155.248° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
At 23:32 UTC on August 7, 2021, a magnitude 2.0 tremor occurred near Island of Hawaii, Hawaii. Coming 1 hours after a magnitude 2.6 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:22:03 UTC | 2.1ml | 74 km W of Karluk, Alaska 57.493°, -155.683° | 15.1 km | - | - | - | ✓ Reviewed | USGS → |
August 7, 2021 brought a magnitude 2.1 earthquake 74 km W of Karluk, Alaska, logged at 23:22 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:16:21 UTC | 5.0mb | 102 km SSE of Hihifo, Tonga -16.772°, -173.350° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 102 km SSE of Hihifo, Tonga with origin time 23:16 UTC on August 7, 2021. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:07:10 UTC | 2.1ml | 59 km E of Sand Point, Alaska 55.261°, -159.575° | 5.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 7, 2021 at 23:07 UTC, a magnitude 2.1 earthquake struck 59 km E of Sand Point, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:04:58 UTC | 2.4ml | 3 km SSE of P?hala, Hawaii 19.179°, -155.463° | 33.3 km | - | - | - | Auto | USGS → |
On August 7, 2021 at 23:04 UTC, a magnitude 2.4 earthquake struck 3 km SSE of P?hala, Hawaii. It arrived roughly 3 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 23:01:40 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.669°, -104.395° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 56 km S of Whites City, New Mexico on August 7, 2021 at 23:01 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 12 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:53:17 UTC | 4.3mb | 138 km S of Katabu, Indonesia -6.171°, 122.689° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 7, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake 138 km S of Katabu, Indonesia at 22:53 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:51:07 UTC | 2.6ml | 6 km S of Volcano, Hawaii 19.387°, -155.244° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 6 km S of Volcano, Hawaii came in on August 7, 2021 at 22:51 UTC. 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. | ||||||||
2021-08-07 2021-08-07 22:37:01 UTC | 2.1ml | 20km E of Little Lake, CA 35.953°, -117.680° | 2.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 20km E of Little Lake, CA came in on August 7, 2021 at 22:37 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. | ||||||||
2021-08-07 2021-08-07 22:33:31 UTC | 4.3mb | 23 km WSW of Pocito, Argentina -31.755°, -68.811° | 15.5 km | - | - | - | ✓ Reviewed | USGS → |
At 22:33 UTC on August 7, 2021, a magnitude 4.3 tremor occurred 23 km WSW of Pocito, Argentina. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:30:16 UTC | 2.1ml | 76 km E of Akutan, Alaska 54.208°, -164.606° | 13.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 76 km E of Akutan, Alaska with origin time 22:30 UTC on August 7, 2021. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:30:04 UTC | 4.3mb | 21 km NNE of San Martín, Argentina -31.250°, -68.416° | 108.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 21 km NNE of San Martín, Argentina at 22:30 UTC on August 7, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:27:16 UTC | 2.1ml | 57 km S of Whites City, NM 31.659°, -104.399° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 7, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 57 km S of Whites City, NM at 22:27 UTC. It arrived roughly 11 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. | ||||||||
2021-08-07 2021-08-07 22:22:07 UTC | 2.2ml | 2 km SSE of P?hala, Hawaii 19.185°, -155.467° | 37.0 km | - | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 2 km SSE of P?hala, Hawaii on August 7, 2021, with origin time 22:22 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 2 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:06:50 UTC | 2.8ml | 25km ENE of Dardanelle, CA 38.415°, -119.566° | 4.8 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 25km ENE of Dardanelle, CA on August 7, 2021, with origin time 22:06 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 22:05:01 UTC | 4.6mb | Vanuatu region -20.519°, 172.634° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 7, 2021 brought a magnitude 4.6 earthquake in the Vanuatu region, logged at 22:05 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 21:46:20 UTC | 2.5mb_lg | 23 km NE of Sugar City, Colorado 38.400°, -103.506° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 23 km NE of Sugar City, Colorado on August 7, 2021 at 21:46 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 21:08:00 UTC | 2.1md | 5 km E of P?hala, Hawaii 19.211°, -155.425° | 33.3 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 5 km E of P?hala, Hawaii on August 7, 2021 at 21:08 UTC. Coming 1 hours after a magnitude 2.7 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. | ||||||||
2021-08-07 2021-08-07 21:04:21 UTC | 2.0ml | 34 km NW of Nanwalek, Alaska 59.574°, -152.341° | 63.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 34 km NW of Nanwalek, Alaska on August 7, 2021 at 21:04 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 20:57:00 UTC | 2.1ml | 30 km SE of Rachel, Nevada 37.429°, -115.532° | 12.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 20:57 UTC on August 7, 2021, a magnitude 2.1 tremor occurred 30 km SE of Rachel, Nevada. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 20:13:54 UTC | 3.8mwr | 207 km W of Port McNeill, Canada 50.651°, -130.015° | 4.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.8 earthquake 207 km W of Port McNeill, Canada at 20:13 UTC on August 7, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 20:05:23 UTC | 4.2mb | 197 km WSW of Panguna, Papua New Guinea -7.097°, 153.877° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 7, 2021 at 20:05 UTC, a magnitude 4.2 earthquake struck 197 km WSW of Panguna, Papua New Guinea. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 20:03:12 UTC | 4.5mb | 22 km ENE of Rasht, Tajikistan 39.106°, 70.616° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:03 UTC on August 7, 2021, a magnitude 4.5 tremor occurred 22 km ENE of Rasht, Tajikistan. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 19:58:36 UTC | 2.7ml | 1 km SE of P?hala, Hawaii 19.190°, -155.465° | 36.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 7, 2021 at 19:58 UTC, a magnitude 2.7 earthquake struck 1 km SE of P?hala, Hawaii. 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 M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 19:53:51 UTC | 4.9mb | 70 km NW of Port-Vila, Vanuatu -17.260°, 167.880° | 25.7 km | - | - | - | ✓ Reviewed | USGS → |
At 19:53 UTC on August 7, 2021, a magnitude 4.9 tremor occurred 70 km NW of Port-Vila, Vanuatu. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 19:41:51 UTC | 2.6md | 4 km SSW of Guánica, Puerto Rico 17.931°, -66.919° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 4 km SSW of Guánica, Puerto Rico at 19:41 UTC on August 7, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 15 hours earlier. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 19:29:25 UTC | 4.3mb | 131 km E of Mil’kovo, Russia 54.521°, 160.636° | 89.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 131 km E of Mil’kovo, Russia on August 7, 2021, with origin time 19:29 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-07 2021-08-07 19:29:04 UTC | 2.0ml | 204 km WSW of Adak, Alaska 51.511°, -179.533° | 70.3 km | - | - | - | ✓ Reviewed | USGS → |
August 7, 2021 brought a magnitude 2.0 earthquake 204 km WSW of Adak, Alaska, logged at 19:29 UTC. 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 August 7, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.