Earthquakes on August 4, 2025
308
EARTHQUAKES on August 4, 2025
24-hour UTC period · USGS data
16 km deep · 1 person felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
100
M3.0–3.9
13
M2.0–2.9
68
M1.0–1.9
120
Activity Summary
308
Total earthquakes
~250
Daily average
Elevated
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
6.2
202 km S of Severo-Kuril’sk, Russia
04:20 UTC · 16.0 km deep
Felt by 1
5.2
175 km S of Severo-Kuril’sk, Russia
16:46 UTC · 10.0 km deep
5.1
119 km S of Vilyuchinsk, Russia
00:44 UTC · 75.7 km deep
5.0
138 km ESE of Ozernovskiy, Russia
21:06 UTC · 35.0 km deep
5.0
123 km SSE of Severo-Kuril’sk, Russia
06:48 UTC · 38.8 km deep
5.0
40 km NW of Tulagi, Solomon Islands
03:54 UTC · 78.8 km deep
Felt by 4
5.0
144 km SE of Vilyuchinsk, Russia
03:36 UTC · 10.0 km deep
4.9
187 km SSE of Vilyuchinsk, Russia
21:59 UTC · 10.0 km deep
Earthquake Map — August 4, 2025
All Earthquakes — August 4, 2025
Showing 30 of 188 (filtered from 308)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-08-04 2025-08-04 23:59:47 UTC | 4.3mb | 249 km SE of Petropavlovsk-Kamchatsky, Russia 51.423°, 161.120° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025, worldwide seismic activity registered a magnitude 4.3 earthquake 249 km SE of Petropavlovsk-Kamchatsky, Russia at 23:59 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.4 earthquake that occurred about 6 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:53:47 UTC | 4.4mb | Izu Islands, Japan region 31.029°, 141.824° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025, worldwide seismic activity registered a magnitude 4.4 earthquake in the Izu Islands, Japan region at 23:53 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:44:34 UTC | 4.3mb | 184 km ESE of Severo-Kuril’sk, Russia 50.226°, 158.635° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:44 UTC on August 4, 2025, a magnitude 4.3 tremor occurred 184 km ESE of Severo-Kuril’sk, Russia. Coming 12 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:39:17 UTC | 4.6mb | 78 km NW of China, Japan 27.846°, 128.013° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 78 km NW of China, Japan came in on August 4, 2025 at 23:39 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:34:50 UTC | 4.2mb | 140 km SSE of Vilyuchinsk, Russia 51.835°, 159.428° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 140 km SSE of Vilyuchinsk, Russia at 23:34 UTC on August 4, 2025. Coming 6 hours after a magnitude 4.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:20:58 UTC | 3.3mb_lg | 5 km E of Assaria, Kansas 38.674°, -97.538° | 9.9 km | 22 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 earthquake was recorded 5 km E of Assaria, Kansas on August 4, 2025 at 23:20 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:14:06 UTC | 3.4md | 79 km NNE of Luquillo, Puerto Rico 19.023°, -65.397° | 49.0 km | 2 | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 23:14 UTC, a magnitude 3.4 earthquake struck 79 km NNE of Luquillo, Puerto Rico. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 23:06:49 UTC | 4.6mb | 60 km WSW of Corinto, Nicaragua 12.209°, -87.656° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 60 km WSW of Corinto, Nicaragua on August 4, 2025 at 23:06 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:44:44 UTC | 4.3mb | 92 km NW of China, Japan 27.914°, 127.897° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 92 km NW of China, Japan at 22:44 UTC on August 4, 2025. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:33:35 UTC | 4.2mb | 132 km SE of Petropavlovsk-Kamchatsky, Russia 52.273°, 160.085° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 132 km SE of Petropavlovsk-Kamchatsky, Russia on August 4, 2025, with origin time 22:33 UTC. It arrived roughly 4 hours after a larger magnitude 4.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:11:09 UTC | 4.6mb | 152 km ESE of Petropavlovsk-Kamchatsky, Russia 52.772°, 160.840° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2025 brought a magnitude 4.6 earthquake 152 km ESE of Petropavlovsk-Kamchatsky, Russia, logged at 22:11 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:08:01 UTC | 4.2mb | 172 km ESE of Ozernovskiy, Russia 51.109°, 158.890° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 172 km ESE of Ozernovskiy, Russia came in on August 4, 2025 at 22:08 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:06:05 UTC | 4.3mb | 141 km E of Ozernovskiy, Russia 51.273°, 158.509° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 141 km E of Ozernovskiy, Russia on August 4, 2025, with origin time 22:06 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 22:05:10 UTC | 2.5md | 13 km W of Toms Place, CA 37.543°, -118.829° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 22:05 UTC, a magnitude 2.5 earthquake struck 13 km W of Toms Place, CA. 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. | ||||||||
2025-08-04 2025-08-04 21:59:45 UTC | 4.9mww | 187 km SSE of Vilyuchinsk, Russia 51.458°, 159.743° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.9 earthquake 187 km SSE of Vilyuchinsk, Russia came in on August 4, 2025 at 21:59 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:43:32 UTC | 4.1mb | 63 km ESE of Petropavlovsk-Kamchatsky, Russia 52.857°, 159.504° | 61.3 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2025 brought a magnitude 4.1 earthquake 63 km ESE of Petropavlovsk-Kamchatsky, Russia, logged at 21:43 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:42:52 UTC | 2.0ml | 95 km S of Point Hope, Alaska 67.499°, -167.047° | 24.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 95 km S of Point Hope, Alaska on August 4, 2025 at 21:42 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:38:27 UTC | 4.2mb | 250 km N of Bamboo Flat, India 13.934°, 92.348° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 250 km N of Bamboo Flat, India on August 4, 2025 at 21:38 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:36:55 UTC | 4.2mb | 247 km SE of Vilyuchinsk, Russia 51.363°, 160.977° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2025 brought a magnitude 4.2 earthquake 247 km SE of Vilyuchinsk, Russia, logged at 21:36 UTC. It arrived roughly 4 hours after a larger magnitude 4.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:28:43 UTC | 4.3mb | 203 km SE of Severo-Kuril’sk, Russia 49.286°, 157.974° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 203 km SE of Severo-Kuril’sk, Russia came in on August 4, 2025 at 21:28 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:23:49 UTC | 2.2ml | 62 km N of Arctic Village, Alaska 68.683°, -145.454° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 62 km N of Arctic Village, Alaska at 21:23 UTC on August 4, 2025. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:09:46 UTC | 4.1mb | 23 km NNW of Shahrud, Iran 36.603°, 54.855° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 21:09 UTC, a magnitude 4.1 earthquake struck 23 km NNW of Shahrud, Iran. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 21:06:20 UTC | 5.0mww | 138 km ESE of Ozernovskiy, Russia 50.985°, 158.314° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025, worldwide seismic activity registered a magnitude 5.0 earthquake 138 km ESE of Ozernovskiy, Russia at 21:06 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:40:55 UTC | 4.0mb | 180 km E of Ozernovskiy, Russia 51.254°, 159.067° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 seismic event took place 180 km E of Ozernovskiy, Russia on August 4, 2025 at 20:40 UTC. Coming 19 hours after a magnitude 4.3 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. | ||||||||
2025-08-04 2025-08-04 20:40:42 UTC | 4.0mb | 190 km ESE of Ozernovskiy, Russia 50.950°, 159.085° | 28.9 km | - | - | - | ✓ Reviewed | USGS → |
August 4, 2025 brought a magnitude 4.0 earthquake 190 km ESE of Ozernovskiy, Russia, logged at 20:40 UTC. It arrived roughly 20 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:40:27 UTC | 2.2ml | 66 km E of Port Alsworth, Alaska 60.131°, -153.126° | 112.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 66 km E of Port Alsworth, Alaska on August 4, 2025, with origin time 20:40 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:37:36 UTC | 4.2mb | 193 km S of Severo-Kuril’sk, Russia 48.950°, 155.842° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 20:37 UTC, a magnitude 4.2 earthquake struck 193 km S of Severo-Kuril’sk, Russia. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:35:24 UTC | 4.2mb | 87 km NE of Shikotan, Russia 44.368°, 147.486° | 108.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 87 km NE of Shikotan, Russia on August 4, 2025 at 20:35 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:29:27 UTC | 4.6mb | 258 km SSE of Severo-Kuril’sk, Russia 48.546°, 157.550° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 20:29 UTC, a magnitude 4.6 earthquake struck 258 km SSE of Severo-Kuril’sk, Russia. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-04 2025-08-04 20:19:31 UTC | 4.0mb | 248 km ESE of Petropavlovsk-Kamchatsky, Russia 52.330°, 162.106° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 4, 2025 at 20:19 UTC, a magnitude 4.0 earthquake struck 248 km ESE of Petropavlovsk-Kamchatsky, Russia. See the M4.0 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 4, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.