Earthquakes on August 8, 2026
340
EARTHQUAKES on August 8, 2026
24-hour UTC period · USGS data
LARGEST: M5.6 — 57 km WNW of Skwentna, Alaska
10 km deep · 1,137 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
39
M3.0–3.9
26
M2.0–2.9
112
M1.0–1.9
158
Activity Summary
340
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.6
57 km WNW of Skwentna, Alaska
04:50 UTC · 10.0 km deep
Felt by 1,137
5.5
47 km ENE of Noda, Japan
17:57 UTC · 34.0 km deep
Felt by 2
5.5
southeast of Easter Island
11:41 UTC · 10.0 km deep
5.2
southeast of Easter Island
13:49 UTC · 10.0 km deep
5.0
Kermadec Islands region
03:59 UTC · 10.0 km deep
4.9
56 km SW of Sarangani, Philippines
10:20 UTC · 11.1 km deep
4.8
northern Mid-Atlantic Ridge
22:09 UTC · 10.0 km deep
4.8
Kermadec Islands, New Zealand
08:40 UTC · 100.9 km deep
Earthquake Map — August 8, 2026
All Earthquakes — August 8, 2026
Showing 30 of 182 (filtered from 340)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-08-08 2026-08-08 23:58:47 UTC | 2.8md | 5 km NW of Pinnacles, CA 36.563°, -121.178° | 2.4 km | - | - | - | Auto | USGS → |
At 23:58 UTC on August 8, 2026, a magnitude 2.8 tremor occurred 5 km NW of Pinnacles, CA. 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. | ||||||||
2026-08-08 2026-08-08 23:51:03 UTC | 2.1md | 6 km NW of Pinnacles, CA 36.573°, -121.183° | 2.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 6 km NW of Pinnacles, CA on August 8, 2026, with origin time 23:51 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. | ||||||||
2026-08-08 2026-08-08 23:38:28 UTC | 2.7ml | 237 km ESE of Attu Station, Alaska 52.117°, 176.480° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 237 km ESE of Attu Station, Alaska on August 8, 2026, with origin time 23:38 UTC. Coming 5 hours after a magnitude 3.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 23:38:27 UTC | 4.3mb | 34 km E of Masjed Soleymān, Iran 31.886°, 49.663° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 34 km E of Masjed Soleymān, Iran on August 8, 2026, with origin time 23:38 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 23:12:18 UTC | 4.5mb | 29 km S of Sarangani, Philippines 5.138°, 125.476° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 8, 2026, worldwide seismic activity registered a magnitude 4.5 earthquake 29 km S of Sarangani, Philippines at 23:12 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 23:07:40 UTC | 2.5ml | 235 km ESE of Attu Station, Alaska 51.981°, 176.345° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:07 UTC on August 8, 2026, a magnitude 2.5 tremor occurred 235 km ESE of Attu Station, Alaska. It arrived roughly 12 hours after a larger magnitude 3.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 23:02:06 UTC | 4.4mb | 18 km NNW of Tsunagi, Japan 32.396°, 130.418° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 18 km NNW of Tsunagi, Japan on August 8, 2026 at 23:02 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 22:58:02 UTC | 3.5ml | 232 km ESE of Attu Station, Alaska 52.018°, 176.318° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
On August 8, 2026 at 22:58 UTC, a magnitude 3.5 earthquake struck 232 km ESE of Attu Station, Alaska. Coming 12 hours after a magnitude 3.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 22:18:26 UTC | 2.0md | 2 km SSW of Alamo, CA 37.836°, -122.043° | 13.7 km | 2 | - | - | ✓ Reviewed | USGS → |
August 8, 2026 brought a magnitude 2.0 earthquake 2 km SSW of Alamo, CA, logged at 22:18 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 22:12:11 UTC | 2.0ml | 6 km WNW of North Perry, Ohio 41.834°, -81.190° | 5.0 km | 13 | - | - | ✓ Reviewed | USGS → |
On August 8, 2026, worldwide seismic activity registered a magnitude 2.0 earthquake 6 km WNW of North Perry, Ohio at 22:12 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 22:09:05 UTC | 4.8mww | northern Mid-Atlantic Ridge 33.799°, -38.021° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected near northern Mid-Atlantic Ridge on August 8, 2026, with origin time 22:09 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 22:00:26 UTC | 2.9ml | 233 km ESE of Attu Station, Alaska 51.954°, 176.298° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 8, 2026 at 22:00 UTC, a magnitude 2.9 earthquake struck 233 km ESE of Attu Station, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 11 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 21:00:42 UTC | 2.9ml | 233 km ESE of Attu Station, Alaska 51.872°, 176.216° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 233 km ESE of Attu Station, Alaska on August 8, 2026 at 21:00 UTC. Coming 10 hours after a magnitude 3.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:58:51 UTC | 2.5ml | 233 km ESE of Attu Station, Alaska 51.844°, 176.201° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 233 km ESE of Attu Station, Alaska at 20:58 UTC on August 8, 2026. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 10 hours earlier. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:54:47 UTC | 2.5ml | 237 km ESE of Attu Station, Alaska 51.780°, 176.199° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 237 km ESE of Attu Station, Alaska on August 8, 2026, with origin time 20:54 UTC. Coming 12 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:39:15 UTC | 2.1md | 2 km SSW of Indios, Puerto Rico 17.973°, -66.832° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 2 km SSW of Indios, Puerto Rico came in on August 8, 2026 at 20:39 UTC. Coming 7 hours after a magnitude 2.1 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. | ||||||||
2026-08-08 2026-08-08 20:37:50 UTC | 2.4ml | 232 km ESE of Attu Station, Alaska 51.870°, 176.203° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:37 UTC on August 8, 2026, a magnitude 2.4 tremor occurred 232 km ESE of Attu Station, Alaska. Coming 10 hours after a magnitude 3.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:10:15 UTC | 2.7ml | 4 km ENE of Wardville, Oklahoma 34.667°, -95.981° | 5.3 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 4 km ENE of Wardville, Oklahoma on August 8, 2026 at 20:10 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:09:52 UTC | 2.7ml | 237 km ESE of Attu Station, Alaska 51.793°, 176.212° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 237 km ESE of Attu Station, Alaska came in on August 8, 2026 at 20:09 UTC. It arrived roughly 12 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 20:06:52 UTC | 2.2ml | 17 km SE of Ackerly, Texas 32.394°, -101.611° | 8.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 17 km SE of Ackerly, Texas with origin time 20:06 UTC on August 8, 2026. Coming 1 hours after a magnitude 2.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 19:55:53 UTC | 2.3ml | 17 km SSE of Ackerly, Texas 32.393°, -101.612° | 8.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 17 km SSE of Ackerly, Texas came in on August 8, 2026 at 19:55 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 19:47:52 UTC | 2.4ml | 235 km ESE of Attu Station, Alaska 51.848°, 176.230° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 235 km ESE of Attu Station, Alaska at 19:47 UTC on August 8, 2026. It arrived roughly 9 hours after a larger magnitude 3.8 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. | ||||||||
2026-08-08 2026-08-08 19:36:30 UTC | 2.5ml | 235 km ESE of Attu Station, Alaska 51.825°, 176.211° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 235 km ESE of Attu Station, Alaska came in on August 8, 2026 at 19:36 UTC. It arrived roughly 9 hours after a larger magnitude 3.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 19:26:34 UTC | 2.0ml | 132 km WSW of Adak, Alaska 51.608°, -178.505° | 96.1 km | - | - | - | ✓ Reviewed | USGS → |
At 19:26 UTC on August 8, 2026, a magnitude 2.0 tremor occurred 132 km WSW of Adak, Alaska. It arrived roughly 1 hours after a larger magnitude 2.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 19:07:57 UTC | 4.7mb | Kermadec Islands region -28.532°, -176.527° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 8, 2026 at 19:07 UTC, a magnitude 4.7 earthquake struck in the Kermadec Islands region. This event falls inside the aftershock decay of a nearby magnitude 5.0 earthquake that occurred about 15 hours earlier. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 18:54:19 UTC | 3.7mb | 235 km ESE of Attu Station, Alaska 52.003°, 176.362° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.7 event was detected 235 km ESE of Attu Station, Alaska on August 8, 2026, with origin time 18:54 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 8 hours earlier. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 18:51:49 UTC | 2.6ml | 58 km WNW of Skwentna, Alaska 62.248°, -152.384° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 8, 2026 at 18:51 UTC, a magnitude 2.6 earthquake struck 58 km WNW of Skwentna, Alaska. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 14 hours earlier. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 18:48:32 UTC | 2.5ml | 235 km ESE of Attu Station, Alaska 51.858°, 176.245° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 235 km ESE of Attu Station, Alaska on August 8, 2026 at 18:48 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 8 hours earlier. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 18:43:21 UTC | 2.4ml | 233 km ESE of Attu Station, Alaska 51.936°, 176.270° | 20.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 233 km ESE of Attu Station, Alaska on August 8, 2026, with origin time 18:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 8 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-08 2026-08-08 18:30:58 UTC | 2.3ml | 198 km WSW of Adak, Alaska 51.274°, -179.338° | 16.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 198 km WSW of Adak, Alaska on August 8, 2026 at 18:30 UTC. See the M2.3 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 8, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.