Earthquakes on August 15, 2026
316
EARTHQUAKES on August 15, 2026
24-hour UTC period · USGS data
175 km deep · 44 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
16
M4.0–4.9
90
M3.0–3.9
15
M2.0–2.9
68
M1.0–1.9
127
Activity Summary
316
Total earthquakes
~250
Daily average
Elevated
Activity level
16
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.9
9 km WNW of Pematangsiantar, Indonesia
10:54 UTC · 175.0 km deep
Felt by 44
5.7
128 km NNE of Palu, Indonesia
16:25 UTC · 84.6 km deep
Felt by 3
5.6
Volcano Islands, Japan region
19:32 UTC · 54.9 km deep
5.5
43 km SE of Severo-Kuril’sk, Russia
00:43 UTC · 72.5 km deep
5.4
23 km NE of Colonia, Micronesia
22:52 UTC · 10.0 km deep
Felt by 8
5.3
47 km S of Angoram, Papua New Guinea
11:10 UTC · 112.1 km deep
05.3
Balleny Islands region
00:40 UTC · 10.0 km deep
5.2
70 km NNE of Ruteng, Indonesia
07:39 UTC · 10.0 km deep
Earthquake Map — August 15, 2026
All Earthquakes — August 15, 2026
Showing 30 of 189 (filtered from 316)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-08-15 2026-08-15 23:56:55 UTC | 2.6ml | 158 km S of Atka, Alaska 50.783°, -173.909° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:56 UTC on August 15, 2026, a magnitude 2.6 tremor occurred 158 km S of Atka, Alaska. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 23:24:41 UTC | 2.2ml | 12 km ESE of Pearsall, Texas 28.843°, -98.976° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
August 15, 2026 brought a magnitude 2.2 earthquake 12 km ESE of Pearsall, Texas, logged at 23:24 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 23:12:54 UTC | 5.0mb | 85 km N of Ruteng, Indonesia -7.841°, 120.525° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 85 km N of Ruteng, Indonesia with origin time 23:12 UTC on August 15, 2026. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:57:17 UTC | 4.3mb | south of the Fiji Islands -24.139°, 179.971° | 599.8 km | - | - | - | ✓ Reviewed | USGS → |
At 22:57 UTC on August 15, 2026, a magnitude 4.3 tremor occurred south of the Fiji Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:54:19 UTC | 3.3ml | 237 km ESE of Attu Station, Alaska 51.983°, 176.385° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:54 UTC on August 15, 2026, a magnitude 3.3 tremor occurred 237 km ESE of Attu Station, Alaska. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:52:56 UTC | 5.4mww | 23 km NE of Colonia, Micronesia 9.649°, 138.290° | 10.0 km | 8 | V | green | ✓ Reviewed | USGS → |
At 22:52 UTC on August 15, 2026, a magnitude 5.4 tremor occurred 23 km NE of Colonia, Micronesia. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. The event was offshore. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:45:34 UTC | 4.3mb | 18 km S of Iztapa, Guatemala 13.763°, -90.730° | 68.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 18 km S of Iztapa, Guatemala at 22:45 UTC on August 15, 2026. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:41:30 UTC | 3.4ml | 23 km E of Point Possession, Alaska 60.964°, -150.272° | 49.0 km | 6 | II | - | ✓ Reviewed | USGS → |
On August 15, 2026, worldwide seismic activity registered a magnitude 3.4 earthquake 23 km E of Point Possession, Alaska at 22:41 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:32:05 UTC | 3.7ml | 11 km SSW of Volcano, Hawaii 19.342°, -155.275° | 30.6 km | 13 | III | - | ✓ Reviewed | USGS → |
This magnitude 3.7 event was detected 11 km SSW of Volcano, Hawaii on August 15, 2026, with origin time 22:32 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 22:10:03 UTC | 4.4mb | 69 km ESE of Sarangani, Philippines 5.136°, 126.031° | 95.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 69 km ESE of Sarangani, Philippines on August 15, 2026, with origin time 22:10 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 21:24:33 UTC | 2.5ml | 98 km SSW of Unalaska, Alaska 53.012°, -166.899° | 22.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 98 km SSW of Unalaska, Alaska on August 15, 2026 at 21:24 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 21:08:32 UTC | 4.6mb | 91 km N of Ruteng, Indonesia -7.789°, 120.524° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 15, 2026 at 21:08 UTC, a magnitude 4.6 earthquake struck 91 km N of Ruteng, Indonesia. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 20:41:56 UTC | 2.1md | 5 km NNW of The Geysers, CA 38.818°, -122.790° | 2.5 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 5 km NNW of The Geysers, CA with origin time 20:41 UTC on August 15, 2026. 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. | ||||||||
2026-08-15 2026-08-15 20:29:43 UTC | 4.4mb | 43 km NNE of Ruteng, Indonesia -8.243°, 120.612° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 43 km NNE of Ruteng, Indonesia came in on August 15, 2026 at 20:29 UTC. It arrived roughly 14 hours after a larger magnitude 4.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 20:26:45 UTC | 2.2ml | 51 km E of Denali National Park, Alaska 63.559°, -150.697° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 15, 2026 at 20:26 UTC, a magnitude 2.2 earthquake struck 51 km E of Denali National Park, Alaska. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 20:14:27 UTC | 4.4mb | 32 km NNE of Ruteng, Indonesia -8.360°, 120.620° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 32 km NNE of Ruteng, Indonesia on August 15, 2026 at 20:14 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 18 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 20:05:38 UTC | 4.3mb | 36 km SW of Sechura, Peru -5.754°, -81.088° | 32.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 36 km SW of Sechura, Peru on August 15, 2026, with origin time 20:05 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 20:00:41 UTC | 3.3ml | 67 km W of Nikolski, Alaska 52.913°, -169.870° | 154.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.3 earthquake 67 km W of Nikolski, Alaska at 20:00 UTC on August 15, 2026. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:57:51 UTC | 4.3mb | 42 km NNW of Vallenar, Chile -28.207°, -70.875° | 73.9 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 42 km NNW of Vallenar, Chile came in on August 15, 2026 at 19:57 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:32:31 UTC | 5.6mww | Volcano Islands, Japan region 23.461°, 142.835° | 54.9 km | - | II | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.6 earthquake in the Volcano Islands, Japan region with origin time 19:32 UTC on August 15, 2026. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:30:15 UTC | 2.1ml | 52 km E of Pedro Bay, Alaska 59.766°, -153.169° | 128.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 15, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 52 km E of Pedro Bay, Alaska at 19:30 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:25:47 UTC | 4.3mb | 86 km NE of Ruteng, Indonesia -8.117°, 121.067° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 86 km NE of Ruteng, Indonesia on August 15, 2026 at 19:25 UTC. It arrived roughly 5 hours after a larger magnitude 4.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:15:53 UTC | 4.1mb | 42 km NNW of Ruteng, Indonesia -8.248°, 120.330° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 42 km NNW of Ruteng, Indonesia came in on August 15, 2026 at 19:15 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.0 earthquake that occurred about 9 hours earlier. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:04:57 UTC | 3.4md | 97 km N of Culebra, Puerto Rico 19.182°, -65.347° | 8.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded 97 km N of Culebra, Puerto Rico on August 15, 2026 at 19:04 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:04:43 UTC | 2.0ml | 85 km SSE of Adak, Alaska 51.144°, -176.230° | 15.4 km | - | - | - | ✓ Reviewed | USGS → |
At 19:04 UTC on August 15, 2026, a magnitude 2.0 tremor occurred 85 km SSE of Adak, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 19 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 19:04:42 UTC | 4.2mb | 105 km SW of Puerto Madero, Mexico 13.969°, -93.022° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 15, 2026 at 19:04 UTC, a magnitude 4.2 earthquake struck 105 km SW of Puerto Madero, Mexico. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 18:43:05 UTC | 4.4mb | 48 km NNE of Ruteng, Indonesia -8.188°, 120.567° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 15, 2026 brought a magnitude 4.4 earthquake 48 km NNE of Ruteng, Indonesia, logged at 18:43 UTC. Coming 12 hours after a magnitude 4.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 18:42:55 UTC | 2.6ml | Rat Islands, Aleutian Islands, Alaska 51.404°, 178.796° | 34.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake near Rat Islands, Aleutian Islands, Alaska at 18:42 UTC on August 15, 2026. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 18:40:21 UTC | 4.5mb | 41 km NE of Ruteng, Indonesia -8.308°, 120.681° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:40 UTC on August 15, 2026, a magnitude 4.5 tremor occurred 41 km NE of Ruteng, Indonesia. Coming 12 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 M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-08-15 2026-08-15 18:19:49 UTC | 2.5ml | 37 km SSE of Midland, Texas 31.669°, -101.997° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 37 km SSE of Midland, Texas with origin time 18:19 UTC on August 15, 2026. 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. | ||||||||
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 15, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.