Earthquakes on August 3, 2025
307
EARTHQUAKES on August 3, 2025
24-hour UTC period · USGS data
30 km deep · 7 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
20
M4.0–4.9
105
M3.0–3.9
16
M2.0–2.9
50
M1.0–1.9
116
Activity Summary
307
Total earthquakes
~250
Daily average
Elevated
Activity level
20
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.8
123 km E of Severo-Kuril’sk, Russia
05:37 UTC · 30.0 km deep
Felt by 7
6.3
Pacific-Antarctic Ridge
04:57 UTC · 10.0 km deep
Felt by 1
5.8
Pacific-Antarctic Ridge
02:26 UTC · 10.0 km deep
5.6
151 km ESE of Petropavlovsk-Kamchatsky, Russia
18:07 UTC · 9.0 km deep
5.6
156 km ESE of Petropavlovsk-Kamchatsky, Russia
14:26 UTC · 10.0 km deep
5.4
western Indian-Antarctic Ridge
15:48 UTC · 10.0 km deep
5.2
165 km ESE of Petropavlovsk-Kamchatsky, Russia
14:29 UTC · 10.0 km deep
5.2
212 km ESE of Severo-Kuril’sk, Russia
13:25 UTC · 10.0 km deep
Earthquake Map — August 3, 2025
All Earthquakes — August 3, 2025
Showing 30 of 191 (filtered from 307)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-08-03 2025-08-03 23:50:01 UTC | 2.0md | 11 km E of Petrolia, CA 40.360°, -124.165° | 28.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025, worldwide seismic activity registered a magnitude 2.0 earthquake 11 km E of Petrolia, CA at 23:50 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 23:39:31 UTC | 4.1mb | 140 km ESE of Petropavlovsk-Kamchatsky, Russia 52.542°, 160.527° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 140 km ESE of Petropavlovsk-Kamchatsky, Russia on August 3, 2025 at 23:39 UTC. It arrived roughly 6 hours after a larger magnitude 5.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 23:27:01 UTC | 4.3mb | 188 km ESE of Severo-Kuril’sk, Russia 50.359°, 158.734° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 188 km ESE of Severo-Kuril’sk, Russia with origin time 23:27 UTC on August 3, 2025. This event falls inside the aftershock decay of a nearby magnitude 5.1 earthquake that occurred about 11 hours earlier. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 23:24:52 UTC | 4.5mb | 112 km ESE of Petropavlovsk-Kamchatsky, Russia 52.781°, 160.229° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 112 km ESE of Petropavlovsk-Kamchatsky, Russia came in on August 3, 2025 at 23:24 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 23:09:06 UTC | 4.1mb | 76 km ESE of Ozernovskiy, Russia 51.319°, 157.561° | 75.0 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 4.1 earthquake 76 km ESE of Ozernovskiy, Russia, logged at 23:09 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 4 hours earlier. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 23:03:27 UTC | 2.8ml | 31 km SE of Unalaska, Alaska 53.686°, -166.187° | 80.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025, worldwide seismic activity registered a magnitude 2.8 earthquake 31 km SE of Unalaska, Alaska at 23:03 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:43:06 UTC | 4.5mb | 65 km S of Severo-Kuril’sk, Russia 50.092°, 156.212° | 66.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 65 km S of Severo-Kuril’sk, Russia on August 3, 2025 at 22:43 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:42:59 UTC | 3.0ml | 73 km S of Sand Point, Alaska 54.680°, -160.398° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 73 km S of Sand Point, Alaska came in on August 3, 2025 at 22:42 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:37:09 UTC | 4.2mb | 163 km SSE of Vilyuchinsk, Russia 51.534°, 159.137° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 163 km SSE of Vilyuchinsk, Russia came in on August 3, 2025 at 22:37 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 3 hours earlier. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:35:56 UTC | 3.3mb_lg | 7 km ENE of Assaria, Kansas 38.696°, -97.525° | 5.0 km | 13 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 earthquake was recorded 7 km ENE of Assaria, Kansas on August 3, 2025 at 22:35 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:28:08 UTC | 4.3mb | Fiji region -20.474°, -178.296° | 554.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025, worldwide seismic activity registered a magnitude 4.3 earthquake in the Fiji region at 22:28 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:17:31 UTC | 4.6mb | 144 km ESE of Petropavlovsk-Kamchatsky, Russia 52.623°, 160.648° | 24.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 144 km ESE of Petropavlovsk-Kamchatsky, Russia on August 3, 2025 at 22:17 UTC. Coming 4 hours after a magnitude 5.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 22:16:49 UTC | 4.2mb | 272 km ESE of Ozernovskiy, Russia 50.743°, 160.209° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 272 km ESE of Ozernovskiy, Russia on August 3, 2025 at 22:16 UTC. Coming 13 hours after a magnitude 4.5 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. | ||||||||
2025-08-03 2025-08-03 21:55:09 UTC | 5.1mww | 210 km SSW of Severo-Kuril’sk, Russia 48.835°, 155.425° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 seismic event took place 210 km SSW of Severo-Kuril’sk, Russia on August 3, 2025 at 21:55 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:53:26 UTC | 4.5mb | 238 km SE of Severo-Kuril’sk, Russia 49.237°, 158.588° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 4.5 earthquake 238 km SE of Severo-Kuril’sk, Russia, logged at 21:53 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:44:34 UTC | 4.9mb | 154 km ESE of Petropavlovsk-Kamchatsky, Russia 52.321°, 160.559° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025 at 21:44 UTC, a magnitude 4.9 earthquake struck 154 km ESE of Petropavlovsk-Kamchatsky, Russia. Coming 7 hours after a magnitude 5.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:43:57 UTC | 4.7mb | 155 km ESE of Petropavlovsk-Kamchatsky, Russia 52.372°, 160.624° | 20.6 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 4.7 earthquake 155 km ESE of Petropavlovsk-Kamchatsky, Russia, logged at 21:43 UTC. Coming 4 hours after a magnitude 5.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:22:00 UTC | 5.0mb | 140 km ESE of Petropavlovsk-Kamchatsky, Russia 52.413°, 160.418° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 5.0 event was detected 140 km ESE of Petropavlovsk-Kamchatsky, Russia on August 3, 2025, with origin time 21:22 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 3 hours earlier. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:12:44 UTC | 4.5mb | 25 km E of Meiktila, Burma (Myanmar) 20.861°, 96.099° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025 at 21:12 UTC, a magnitude 4.5 earthquake struck 25 km E of Meiktila, Burma (Myanmar). The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 21:06:49 UTC | 4.1mb | 255 km SE of Petropavlovsk-Kamchatsky, Russia 51.413°, 161.233° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025 at 21:06 UTC, a magnitude 4.1 earthquake struck 255 km SE of Petropavlovsk-Kamchatsky, Russia. Coming 6 hours after a magnitude 4.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 20:52:06 UTC | 4.8mb | 50 km SE of Petropavlovsk-Kamchatsky, Russia 52.781°, 159.219° | 70.6 km | - | - | - | ✓ Reviewed | USGS → |
At 20:52 UTC on August 3, 2025, a magnitude 4.8 tremor occurred 50 km SE of Petropavlovsk-Kamchatsky, Russia. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 20:21:40 UTC | 4.6mb | 136 km ESE of Petropavlovsk-Kamchatsky, Russia 52.647°, 160.531° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 4.6 earthquake 136 km ESE of Petropavlovsk-Kamchatsky, Russia, logged at 20:21 UTC. It arrived roughly 2 hours after a larger magnitude 5.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 20:16:32 UTC | 4.2mb | 184 km ESE of Petropavlovsk-Kamchatsky, Russia 52.422°, 161.153° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 4.2 earthquake 184 km ESE of Petropavlovsk-Kamchatsky, Russia, logged at 20:16 UTC. It arrived roughly 3 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 20:08:53 UTC | 2.8ml | 109 km SSE of Sand Point, Alaska 54.414°, -159.887° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:08 UTC on August 3, 2025, a magnitude 2.8 tremor occurred 109 km SSE of Sand Point, Alaska. It arrived roughly 10 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 20:08:49 UTC | 5.1mb | 107 km SE of Severo-Kuril’sk, Russia 49.963°, 157.144° | 40.5 km | - | - | - | ✓ Reviewed | USGS → |
August 3, 2025 brought a magnitude 5.1 earthquake 107 km SE of Severo-Kuril’sk, Russia, logged at 20:08 UTC. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 19:48:00 UTC | 2.7ml | 95 km SSW of Atka, Alaska 51.479°, -174.963° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 95 km SSW of Atka, Alaska at 19:48 UTC on August 3, 2025. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 19:47:39 UTC | 5.1mb | 253 km ESE of Severo-Kuril’sk, Russia 50.019°, 159.539° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 3, 2025 at 19:47 UTC, a magnitude 5.1 earthquake struck 253 km ESE of Severo-Kuril’sk, Russia. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 19:47:21 UTC | 4.5mb | 178 km SE of Petropavlovsk-Kamchatsky, Russia 52.192°, 160.839° | 33.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 178 km SE of Petropavlovsk-Kamchatsky, Russia on August 3, 2025 at 19:47 UTC. It arrived roughly 5 hours after a larger magnitude 5.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 19:38:01 UTC | 5.1mb | 170 km SSE of Vilyuchinsk, Russia 51.565°, 159.535° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded 170 km SSE of Vilyuchinsk, Russia on August 3, 2025 at 19:38 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-03 2025-08-03 19:31:59 UTC | 4.3mb | 254 km ESE of Severo-Kuril’sk, Russia 50.048°, 159.566° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:31 UTC on August 3, 2025, a magnitude 4.3 tremor occurred 254 km ESE of Severo-Kuril’sk, Russia. It arrived roughly 3 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.3 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 3, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.