Earthquakes on August 20, 2025
257
EARTHQUAKES on August 20, 2025
24-hour UTC period · USGS data
LARGEST: M5.1 — 74 km ESE of Shikotan, Russia
41 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
45
M3.0–3.9
8
M2.0–2.9
59
M1.0–1.9
143
Activity Summary
257
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.1
74 km ESE of Shikotan, Russia
21:24 UTC · 41.2 km deep
5.0
Kermadec Islands, New Zealand
17:13 UTC · 10.0 km deep
4.9
55 km E of San Julian, Philippines
15:35 UTC · 10.0 km deep
4.9
42 km SSE of Alianza Cristiana, Peru
15:06 UTC · 112.7 km deep
4.9
23 km SSE of Cikarang, Indonesia
12:54 UTC · 9.6 km deep
Felt by 72
4.9
150 km ESE of Petropavlovsk-Kamchatsky, Russia
01:37 UTC · 10.0 km deep
4.8
central Mid-Atlantic Ridge
05:55 UTC · 10.0 km deep
4.7
118 km E of Severo-Kuril’sk, Russia
16:44 UTC · 35.0 km deep
Earthquake Map — August 20, 2025
All Earthquakes — August 20, 2025
Showing 30 of 114 (filtered from 257)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-08-20 2025-08-20 23:50:27 UTC | 2.0ml | Rat Islands, Aleutian Islands, Alaska 51.738°, 178.532° | 78.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake near Rat Islands, Aleutian Islands, Alaska with origin time 23:50 UTC on August 20, 2025. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 23:35:08 UTC | 4.1mb | 198 km NE of Lospalos, Timor Leste -7.431°, 128.429° | 158.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025 at 23:35 UTC, a magnitude 4.1 earthquake struck 198 km NE of Lospalos, Timor Leste. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 23:30:00 UTC | 2.9ml | 17 km NNE of Lorino, Russia 65.646°, -171.521° | 23.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 17 km NNE of Lorino, Russia at 23:30 UTC on August 20, 2025. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 23:14:23 UTC | 4.1mb | 261 km N of Saipan, Northern Mariana Islands 17.534°, 145.316° | 351.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 261 km N of Saipan, Northern Mariana Islands on August 20, 2025 at 23:14 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 23:08:24 UTC | 3.3ml | Rat Islands, Aleutian Islands, Alaska 51.264°, 178.725° | 22.6 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2025 brought a magnitude 3.3 earthquake near Rat Islands, Aleutian Islands, Alaska, logged at 23:08 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 22:38:41 UTC | 4.2mb | 128 km SE of Masohi, Indonesia -4.027°, 129.867° | 36.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025 at 22:38 UTC, a magnitude 4.2 earthquake struck 128 km SE of Masohi, Indonesia. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 22:24:05 UTC | 4.4mb | 12 km NNW of Sulusaray, Turkey 40.100°, 36.026° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2025 brought a magnitude 4.4 earthquake 12 km NNW of Sulusaray, Turkey, logged at 22:24 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 22:17:31 UTC | 2.4md | 6 km SSE of Vonore, Tennessee 35.536°, -84.216° | 15.9 km | 2 | - | - | ✓ Reviewed | USGS → |
August 20, 2025 brought a magnitude 2.4 earthquake 6 km SSE of Vonore, Tennessee, logged at 22:17 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 22:13:26 UTC | 2.6ml | 7 km NNE of Central, Utah 37.479°, -113.583° | 9.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 7 km NNE of Central, Utah on August 20, 2025, with origin time 22:13 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 22:01:31 UTC | 2.8ml | 23 km SSW of Wales, Alaska 65.407°, -168.218° | 13.7 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2025 brought a magnitude 2.8 earthquake 23 km SSW of Wales, Alaska, logged at 22:01 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 21:52:12 UTC | 2.2ml | 14 km N of Four Mile Road, Alaska 64.735°, -149.090° | 18.2 km | 1 | - | - | ✓ Reviewed | USGS → |
At 21:52 UTC on August 20, 2025, a magnitude 2.2 tremor occurred 14 km N of Four Mile Road, Alaska. It arrived roughly 1 hours after a larger magnitude 4.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 21:39:05 UTC | 4.4mb | off the west coast of northern Sumatra 2.806°, 92.210° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025 at 21:39 UTC, a magnitude 4.4 earthquake struck near off the west coast of northern Sumatra. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 21:32:01 UTC | 4.2mb | 33 km ESE of Lamitan, Philippines 5.998°, 125.987° | 152.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 33 km ESE of Lamitan, Philippines on August 20, 2025 at 21:32 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 21:24:55 UTC | 5.1mb | 74 km ESE of Shikotan, Russia 43.469°, 147.528° | 41.2 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025 at 21:24 UTC, a magnitude 5.1 earthquake struck 74 km ESE of Shikotan, Russia. It is the largest earthquake currently listed for worldwide seismic activity on August 20, 2025. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 21:09:56 UTC | 3.2ml | 20 km NNE of Maeser, Utah 40.654°, -109.507° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 earthquake was recorded 20 km NNE of Maeser, Utah on August 20, 2025 at 21:09 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:35:27 UTC | 4.2mwr | 15 km N of Four Mile Road, Alaska 64.744°, -149.081° | 15.4 km | 58 | IV | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 15 km N of Four Mile Road, Alaska with origin time 20:35 UTC on August 20, 2025. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:35:02 UTC | 4.4mb | 141 km WNW of Neiafu, Tonga -18.237°, -175.249° | 236.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 141 km WNW of Neiafu, Tonga on August 20, 2025 at 20:35 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:34:45 UTC | 3.0ml | 13 km N of Four Mile Road, Alaska 64.724°, -149.089° | 16.0 km | 11 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 13 km N of Four Mile Road, Alaska with origin time 20:34 UTC on August 20, 2025. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:21:51 UTC | 2.4ml | 67 km N of Petersville, Alaska 63.105°, -150.755° | 119.4 km | - | - | - | ✓ Reviewed | USGS → |
At 20:21 UTC on August 20, 2025, a magnitude 2.4 tremor occurred 67 km N of Petersville, Alaska. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:18:03 UTC | 2.9ml | 42 km E of Pedro Bay, Alaska 59.825°, -153.348° | 122.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 42 km E of Pedro Bay, Alaska on August 20, 2025, with origin time 20:18 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:09:24 UTC | 2.7ml | 88 km SSE of Nikolski, Alaska 52.179°, -168.459° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.7 earthquake 88 km SSE of Nikolski, Alaska with origin time 20:09 UTC on August 20, 2025. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 20:03:31 UTC | 3.4ml | 68 km SW of Adak, Alaska 51.458°, -177.364° | 59.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 seismic event took place 68 km SW of Adak, Alaska on August 20, 2025 at 20:03 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 19:55:50 UTC | 4.5mb | 255 km SE of Hihifo, Tonga -17.402°, -171.931° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 255 km SE of Hihifo, Tonga on August 20, 2025 at 19:55 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 19:49:40 UTC | 4.6mb | 49 km SE of Petropavlovsk-Kamchatsky, Russia 52.804°, 159.222° | 71.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 49 km SE of Petropavlovsk-Kamchatsky, Russia on August 20, 2025 at 19:49 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 19:42:58 UTC | 2.3ml | Rat Islands, Aleutian Islands, Alaska 50.713°, 177.511° | 15.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake near Rat Islands, Aleutian Islands, Alaska with origin time 19:42 UTC on August 20, 2025. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 19:42:35 UTC | 2.0ml | 171 km S of Adak, Alaska 50.348°, -176.304° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025, worldwide seismic activity registered a magnitude 2.0 earthquake 171 km S of Adak, Alaska at 19:42 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 18:33:19 UTC | 4.2mb | 46 km SSW of Puerto San José, Guatemala 13.554°, -91.021° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2025, worldwide seismic activity registered a magnitude 4.2 earthquake 46 km SSW of Puerto San José, Guatemala at 18:33 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 17:28:58 UTC | 4.5mb | 68 km NE of Pototano, Indonesia -8.066°, 117.999° | 214.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 68 km NE of Pototano, Indonesia with origin time 17:28 UTC on August 20, 2025. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 17:25:19 UTC | 4.6mb | 75 km E of Petropavlovsk-Kamchatsky, Russia 53.019°, 159.755° | 59.7 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2025 brought a magnitude 4.6 earthquake 75 km E of Petropavlovsk-Kamchatsky, Russia, logged at 17:25 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-20 2025-08-20 17:13:18 UTC | 5.0mb | Kermadec Islands, New Zealand -30.154°, -177.797° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.0 earthquake was recorded near Kermadec Islands, New Zealand on August 20, 2025 at 17:13 UTC. See the M5.0 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 20, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.