Earthquakes on August 20, 2026
261
EARTHQUAKES on August 20, 2026
24-hour UTC period · USGS data
LARGEST: M6.7 — 35 km ENE of Tambo, Peru
99 km deep · 76 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
14
M4.0–4.9
43
M3.0–3.9
16
M2.0–2.9
57
M1.0–1.9
131
Activity Summary
261
Total earthquakes
~250
Daily average
Normal
Activity level
14
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.7
35 km ENE of Tambo, Peru
18:00 UTC · 99.0 km deep
Felt by 76
5.6
42 km N of Ruteng, Indonesia
02:46 UTC · 10.0 km deep
Felt by 1
5.2
71 km NNW of Ende, Indonesia
18:12 UTC · 10.0 km deep
5.1
180 km SE of Kokopo, Papua New Guinea
18:25 UTC · 35.0 km deep
5.1
42 km NNE of Ruteng, Indonesia
09:30 UTC · 10.0 km deep
Felt by 1
5.0
Pacific-Antarctic Ridge
23:36 UTC · 10.0 km deep
5.0
81 km NNW of Ende, Indonesia
19:53 UTC · 10.0 km deep
5.0
69 km NW of Ende, Indonesia
19:24 UTC · 10.0 km deep
Earthquake Map — August 20, 2026
All Earthquakes — August 20, 2026
Showing 30 of 130 (filtered from 261)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-08-20 2026-08-20 23:39:27 UTC | 3.2ml | 229 km ESE of Attu Station, Alaska 52.197°, 176.392° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 earthquake was recorded 229 km ESE of Attu Station, Alaska on August 20, 2026 at 23:39 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 23:36:41 UTC | 5.0mb | Pacific-Antarctic Ridge -56.883°, -141.548° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.0 earthquake near Pacific-Antarctic Ridge at 23:36 UTC on August 20, 2026. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 23:01:39 UTC | 2.3ml | 83 km SE of Unalaska, Alaska 53.384°, -165.582° | 16.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 83 km SE of Unalaska, Alaska with origin time 23:01 UTC on August 20, 2026. It arrived roughly 20 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 23:01:37 UTC | 4.4mb | 56 km NNE of Labuan Bajo, Indonesia -8.016°, 120.052° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2026, worldwide seismic activity registered a magnitude 4.4 earthquake 56 km NNE of Labuan Bajo, Indonesia at 23:01 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:52:50 UTC | 2.2ml | 84 km SE of Unalaska, Alaska 53.368°, -165.579° | 16.6 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2026 brought a magnitude 2.2 earthquake 84 km SE of Unalaska, Alaska, logged at 22:52 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 20 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:49:31 UTC | 2.0ml | 3 km SSW of Pāhala, Hawaii 19.177°, -155.494° | 33.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2026, worldwide seismic activity registered a magnitude 2.0 earthquake 3 km SSW of Pāhala, Hawaii at 22:49 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:47:00 UTC | 4.3mb | 43 km NNE of Ruteng, Indonesia -8.255°, 120.624° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 43 km NNE of Ruteng, Indonesia on August 20, 2026 at 22:47 UTC. Coming 20 hours after a magnitude 5.6 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. | ||||||||
2026-08-20 2026-08-20 22:39:32 UTC | 2.2ml | 74 km ESE of Adak, Alaska 51.703°, -175.588° | 58.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2026 at 22:39 UTC, a magnitude 2.2 earthquake struck 74 km ESE of Adak, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:22:17 UTC | 2.2ml | 80 km SSE of Adak, Alaska 51.171°, -176.362° | 17.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 80 km SSE of Adak, Alaska on August 20, 2026 at 22:22 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:17:39 UTC | 2.4ml | 24 km W of Cohoe, Alaska 60.403°, -151.746° | 77.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 24 km W of Cohoe, Alaska on August 20, 2026 at 22:17 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:06:51 UTC | 3.0ml | 233 km ESE of Attu Station, Alaska 52.020°, 176.337° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 233 km ESE of Attu Station, Alaska on August 20, 2026, with origin time 22:06 UTC. It arrived roughly 11 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:05:24 UTC | 2.8ml | 95 km S of False Pass, Alaska 54.005°, -163.580° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 95 km S of False Pass, Alaska on August 20, 2026, with origin time 22:05 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 22:05:05 UTC | 2.6ml | 89 km SSW of False Pass, Alaska 54.079°, -163.777° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 89 km SSW of False Pass, Alaska on August 20, 2026, with origin time 22:05 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 21:57:40 UTC | 4.5mb | 79 km N of Saipan, Northern Mariana Islands 15.921°, 145.614° | 211.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected 79 km N of Saipan, Northern Mariana Islands on August 20, 2026, with origin time 21:57 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 21:50:18 UTC | 3.1ml | 233 km ESE of Attu Station, Alaska 52.011°, 176.334° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 233 km ESE of Attu Station, Alaska with origin time 21:50 UTC on August 20, 2026. Coming 11 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 21:42:13 UTC | 3.0ml | 236 km ESE of Attu Station, Alaska 51.933°, 176.323° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 236 km ESE of Attu Station, Alaska came in on August 20, 2026 at 21:42 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 11 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 21:38:33 UTC | 2.0ml | 57 km SW of Unalaska, Alaska 53.454°, -167.038° | 14.2 km | - | - | - | ✓ Reviewed | USGS → |
At 21:38 UTC on August 20, 2026, a magnitude 2.0 tremor occurred 57 km SW of Unalaska, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 21:30:30 UTC | 4.3mb | 23 km SSW of Tambo, Peru -14.998°, -74.008° | 78.6 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2026 brought a magnitude 4.3 earthquake 23 km SSW of Tambo, Peru, logged at 21:30 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 20:52:26 UTC | 4.7mb | 98 km NNE of Ruteng, Indonesia -7.773°, 120.754° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 98 km NNE of Ruteng, Indonesia on August 20, 2026, with origin time 20:52 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 20:42:33 UTC | 2.0ml | 72 km SSE of Adak, Alaska 51.236°, -176.426° | 22.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 72 km SSE of Adak, Alaska at 20:42 UTC on August 20, 2026. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 20:38:37 UTC | 4.0mb | 23 km ESE of Santa Gertrudis Miramar, Mexico 15.957°, -95.209° | 42.6 km | - | - | - | ✓ Reviewed | USGS → |
At 20:38 UTC on August 20, 2026, a magnitude 4.0 tremor occurred 23 km ESE of Santa Gertrudis Miramar, Mexico. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 20:35:00 UTC | 4.1mb | 76 km W of San Antonio de los Cobres, Argentina -24.260°, -67.075° | 152.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 76 km W of San Antonio de los Cobres, Argentina with origin time 20:35 UTC on August 20, 2026. This event falls inside the aftershock decay of a nearby magnitude 4.7 earthquake that occurred about 17 hours earlier. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 20:23:33 UTC | 3.4ml | 235 km ESE of Attu Station, Alaska 51.903°, 176.287° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2026 at 20:23 UTC, a magnitude 3.4 earthquake struck 235 km ESE of Attu Station, Alaska. It arrived roughly 9 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:53:51 UTC | 5.0mb | 81 km NNW of Ende, Indonesia -8.173°, 121.365° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 5.0 event was detected 81 km NNW of Ende, Indonesia on August 20, 2026, with origin time 19:53 UTC. It arrived roughly 2 hours after a larger magnitude 5.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:37:47 UTC | 2.3ml | 10 km W of Point Possession, Alaska 60.937°, -150.878° | 1.9 km | 1 | - | - | ✓ Reviewed | USGS → |
On August 20, 2026, worldwide seismic activity registered a magnitude 2.3 earthquake 10 km W of Point Possession, Alaska at 19:37 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:33:11 UTC | 2.0ml | 11 km ENE of Falls City, Texas 29.016°, -97.907° | 8.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 11 km ENE of Falls City, Texas on August 20, 2026, with origin time 19:33 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:27:01 UTC | 2.1ml | 111 km N of Yakutat, Alaska 60.540°, -140.027° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 111 km N of Yakutat, Alaska came in on August 20, 2026 at 19:27 UTC. It arrived roughly 11 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2026-08-20 2026-08-20 19:24:02 UTC | 5.0mb | 69 km NW of Ende, Indonesia -8.402°, 121.211° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.0 earthquake 69 km NW of Ende, Indonesia came in on August 20, 2026 at 19:24 UTC. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:15:34 UTC | 4.5mb | 76 km NNE of Ruteng, Indonesia -7.983°, 120.750° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 76 km NNE of Ruteng, Indonesia came in on August 20, 2026 at 19:15 UTC. It arrived roughly 10 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-20 2026-08-20 19:07:03 UTC | 3.0ml | 236 km ESE of Attu Station, Alaska 52.014°, 176.393° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 seismic event took place 236 km ESE of Attu Station, Alaska on August 20, 2026 at 19:07 UTC. Coming 8 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.0 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, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.