Earthquakes on August 25, 2021
457
EARTHQUAKES on August 25, 2021
24-hour UTC period · USGS data
LARGEST: M5.4 — Kermadec Islands, New Zealand
34 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
8
M4.0–4.9
44
M3.0–3.9
9
M2.0–2.9
86
M1.0–1.9
310
Activity Summary
457
Total earthquakes
~250
Daily average
Elevated
Activity level
8
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
Kermadec Islands, New Zealand
05:58 UTC · 34.0 km deep
5.3
216 km WSW of Laojunmiao, China
23:38 UTC · 10.0 km deep
Felt by 1
5.3
South Sandwich Islands region
21:26 UTC · 9.7 km deep
5.2
11 km NNE of Pinalejo, Honduras
21:04 UTC · 7.8 km deep
Felt by 123
5.1
Izu Islands, Japan region
10:18 UTC · 40.1 km deep
5.1
South Sandwich Islands region
00:39 UTC · 10.0 km deep
5.1
109 km E of Copiapó, Chile
00:28 UTC · 96.8 km deep
Felt by 5
5.0
South Sandwich Islands region
19:31 UTC · 57.3 km deep
Earthquake Map — August 25, 2021
All Earthquakes — August 25, 2021
Showing 30 of 147 (filtered from 457)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-08-25 2021-08-25 23:53:49 UTC | 2.1ml | 7 km SSE of P?hala, Hawaii 19.145°, -155.448° | 31.6 km | - | - | - | Auto | USGS → |
On August 25, 2021 at 23:53 UTC, a magnitude 2.1 earthquake struck 7 km SSE of P?hala, Hawaii. Coming 3 hours after a magnitude 3.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:38:21 UTC | 5.3mww | 216 km WSW of Laojunmiao, China 38.910°, 95.526° | 10.0 km | 1 | VI | green | ✓ Reviewed | USGS → |
A magnitude 5.3 earthquake was recorded 216 km WSW of Laojunmiao, China on August 25, 2021 at 23:38 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:36:40 UTC | 2.0ml | 4 km E of P?hala, Hawaii 19.210°, -155.434° | 33.7 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.0 earthquake 4 km E of P?hala, Hawaii at 23:36 UTC on August 25, 2021. It arrived roughly 3 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:32:27 UTC | 3.5mb_lg | 183 km NNW of Diomede, Alaska 67.266°, -170.607° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:32 UTC on August 25, 2021, a magnitude 3.5 tremor occurred 183 km NNW of Diomede, Alaska. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:27:43 UTC | 3.9md | 11 km ESE of Guaymate, Dominican Republic 18.549°, -68.882° | 109.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.9 earthquake 11 km ESE of Guaymate, Dominican Republic with origin time 23:27 UTC on August 25, 2021. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:08:15 UTC | 4.6mb | South Sandwich Islands region -59.128°, -25.648° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake in the South Sandwich Islands region at 23:08 UTC on August 25, 2021. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 23:08:05 UTC | 3.4ml | 142 km WSW of Adak, Alaska 51.373°, -178.524° | 16.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.4 event was detected 142 km WSW of Adak, Alaska on August 25, 2021, with origin time 23:08 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 22:51:40 UTC | 4.9mb | South Sandwich Islands region -55.611°, -26.702° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.9 seismic event took place in the South Sandwich Islands region on August 25, 2021 at 22:51 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 22:40:47 UTC | 2.1ml | 6 km SW of Volcano, Hawaii 19.396°, -155.278° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:40 UTC on August 25, 2021, a magnitude 2.1 tremor occurred 6 km SW of Volcano, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.9 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. | ||||||||
2021-08-25 2021-08-25 22:17:44 UTC | 4.1mb | 129 km WSW of Kununurra, Australia -16.390°, 127.713° | 8.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 129 km WSW of Kununurra, Australia on August 25, 2021 at 22:17 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 22:07:39 UTC | 2.2ml | 75 km ESE of Sand Point, Alaska 55.083°, -159.408° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 75 km ESE of Sand Point, Alaska with origin time 22:07 UTC on August 25, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 22:04:25 UTC | 4.0mb | 68 km E of Amahai, Indonesia -3.401°, 129.532° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2021 at 22:04 UTC, a magnitude 4.0 earthquake struck 68 km E of Amahai, Indonesia. Coming 17 hours after a magnitude 4.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 21:31:03 UTC | 2.4ml | 57 km NNW of Yakutat, Alaska 60.023°, -140.120° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2021, worldwide seismic activity registered a magnitude 2.4 earthquake 57 km NNW of Yakutat, Alaska at 21:31 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 21:26:34 UTC | 5.3mww | South Sandwich Islands region -57.138°, -25.398° | 9.7 km | - | III | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.3 earthquake in the South Sandwich Islands region with origin time 21:26 UTC on August 25, 2021. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 21:05:01 UTC | 2.6ml | 6km NNW of Santa Cruz Is. (E end), CA 34.078°, -119.547° | 6.0 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 6km NNW of Santa Cruz Is. (E end), CA on August 25, 2021 at 21:05 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 21:04:19 UTC | 5.2mww | 11 km NNE of Pinalejo, Honduras 15.476°, -88.335° | 7.8 km | 123 | - | - | ✓ Reviewed | USGS → |
On August 25, 2021, worldwide seismic activity registered a magnitude 5.2 earthquake 11 km NNE of Pinalejo, Honduras at 21:04 UTC. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 20:53:16 UTC | 2.4ml | 85 km WSW of Covenant Life, Alaska 59.138°, -137.423° | 16.8 km | - | - | - | ✓ Reviewed | USGS → |
At 20:53 UTC on August 25, 2021, a magnitude 2.4 tremor occurred 85 km WSW of Covenant Life, Alaska. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 20:31:04 UTC | 3.1ml | 3 km SSE of P?hala, Hawaii 19.174°, -155.471° | 35.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 3 km SSE of P?hala, Hawaii on August 25, 2021 at 20:31 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 20:20:11 UTC | 4.3mb | 150 km WSW of Lebu, Chile -38.065°, -75.266° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 150 km WSW of Lebu, Chile on August 25, 2021 at 20:20 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 20:06:08 UTC | 2.0ml | 33 km ENE of Schurz, Nevada 39.012°, -118.432° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
August 25, 2021 brought a magnitude 2.0 earthquake 33 km ENE of Schurz, Nevada, logged at 20:06 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. | ||||||||
2021-08-25 2021-08-25 20:01:08 UTC | 2.8md | 40km NNE of Toms Place, CA 37.910°, -118.546° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 40km NNE of Toms Place, CA at 20:01 UTC on August 25, 2021. Coming 1 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:58:00 UTC | 2.2ml | 57 km W of Anchor Point, Alaska 59.850°, -152.850° | 99.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 57 km W of Anchor Point, Alaska at 19:58 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:52:16 UTC | 2.9md | 40km NNE of Toms Place, CA 37.910°, -118.549° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
At 19:52 UTC on August 25, 2021, a magnitude 2.9 tremor occurred 40km NNE of Toms Place, CA. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:43:07 UTC | 4.4mb | South Sandwich Islands region -57.207°, -25.532° | 52.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2021 at 19:43 UTC, a magnitude 4.4 earthquake struck in the South Sandwich Islands region. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:39:46 UTC | 3.0ml | 154 km S of Akhiok, Alaska 55.578°, -153.763° | 26.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2021 at 19:39 UTC, a magnitude 3.0 earthquake struck 154 km S of Akhiok, Alaska. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:33:55 UTC | 2.4ml | 15 km ESE of Lowell Point, Alaska 60.041°, -149.175° | 6.3 km | 5 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 15 km ESE of Lowell Point, Alaska at 19:33 UTC on August 25, 2021. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:31:46 UTC | 5.0mb | South Sandwich Islands region -59.368°, -25.816° | 57.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.0 earthquake in the South Sandwich Islands region came in on August 25, 2021 at 19:31 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:25:27 UTC | 2.8ml | 21 km WNW of Mountain View, Hawaii 19.636°, -155.294° | 19.3 km | 4 | - | - | ✓ Reviewed | USGS → |
August 25, 2021 brought a magnitude 2.8 earthquake 21 km WNW of Mountain View, Hawaii, logged at 19:25 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:23:21 UTC | 4.4mb | 126 km ESE of Madang, Papua New Guinea -5.495°, 146.898° | 219.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 126 km ESE of Madang, Papua New Guinea on August 25, 2021 at 19:23 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-25 2021-08-25 19:12:00 UTC | 4.2mb | Kermadec Islands region -31.173°, -179.850° | 404.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake in the Kermadec Islands region at 19:12 UTC on August 25, 2021. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. 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 August 25, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.