Earthquakes on September 6, 2021
446
EARTHQUAKES on September 6, 2021
24-hour UTC period · USGS data
LARGEST: M5.6 — South Sandwich Islands region
28 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
42
M3.0–3.9
14
M2.0–2.9
88
M1.0–1.9
297
Activity Summary
446
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
South Sandwich Islands region
08:19 UTC · 28.0 km deep
5.3
86 km NW of Orlik, Russia
07:47 UTC · 10.0 km deep
Felt by 8
5.2
62 km ESE of Hualien City, Taiwan
14:00 UTC · 27.5 km deep
Felt by 12
5.2
southern Mid-Atlantic Ridge
04:32 UTC · 10.0 km deep
5.1
north of Svalbard
17:31 UTC · 10.0 km deep
4.9
110 km SSE of Pondaguitan, Philippines
10:38 UTC · 56.8 km deep
4.9
South Sandwich Islands region
08:23 UTC · 29.0 km deep
4.7
201 km NW of Tobelo, Indonesia
23:53 UTC · 39.6 km deep
Earthquake Map — September 6, 2021
All Earthquakes — September 6, 2021
Showing 30 of 149 (filtered from 446)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-09-06 2021-09-06 23:53:49 UTC | 4.7mb | 201 km NW of Tobelo, Indonesia 3.160°, 126.881° | 39.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake 201 km NW of Tobelo, Indonesia came in on September 6, 2021 at 23:53 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:54:53 UTC | 4.0mb | 5 km SSE of Niltepec, Mexico 16.523°, -94.593° | 81.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 5 km SSE of Niltepec, Mexico on September 6, 2021, with origin time 22:54 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:53:58 UTC | 2.0ml | 163 km S of False Pass, Alaska 53.386°, -163.511° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 163 km S of False Pass, Alaska on September 6, 2021, with origin time 22:53 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 5 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:45:44 UTC | 2.0ml | 166 km S of False Pass, Alaska 53.358°, -163.485° | 20.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 166 km S of False Pass, Alaska came in on September 6, 2021 at 22:45 UTC. Coming 5 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:36:24 UTC | 4.4mb | 45 km SE of Los Andes, Chile -33.092°, -70.220° | 110.5 km | 19 | - | - | ✓ Reviewed | USGS → |
On September 6, 2021 at 22:36 UTC, a magnitude 4.4 earthquake struck 45 km SE of Los Andes, Chile. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:34:53 UTC | 2.5md | 6km NW of The Geysers, CA 38.813°, -122.816° | 3.1 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 6km NW of The Geysers, CA came in on September 6, 2021 at 22:34 UTC. It arrived roughly 1 hours after a larger magnitude 3.1 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:34:24 UTC | 3.1ml | 7km NW of The Geysers, CA 38.815°, -122.816° | 2.3 km | 2 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 7km NW of The Geysers, CA at 22:34 UTC on September 6, 2021. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 22:10:07 UTC | 2.4ml | 58 km NNW of Yakutat, Alaska 60.044°, -140.085° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 58 km NNW of Yakutat, Alaska at 22:10 UTC on September 6, 2021. Coming 15 hours after a magnitude 4.1 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. | ||||||||
2021-09-06 2021-09-06 21:53:33 UTC | 3.7mb | 84 km ESE of Sand Point, Alaska 55.136°, -159.220° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.7 seismic event took place 84 km ESE of Sand Point, Alaska on September 6, 2021 at 21:53 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 21:42:50 UTC | 4.4mb | 62 km E of Tocache, Peru -8.179°, -75.952° | 123.7 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 62 km E of Tocache, Peru on September 6, 2021 at 21:42 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 21:31:22 UTC | 2.5ml | 60 km NNW of Yakutat, Alaska 60.044°, -140.146° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 60 km NNW of Yakutat, Alaska on September 6, 2021 at 21:31 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.1 earthquake that occurred about 14 hours earlier. 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. | ||||||||
2021-09-06 2021-09-06 21:23:13 UTC | 3.3ml | 67 km ESE of Adak, Alaska 51.550°, -175.816° | 39.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 earthquake was recorded 67 km ESE of Adak, Alaska on September 6, 2021 at 21:23 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 21:19:31 UTC | 2.5ml | 56 km NNW of Yakutat, Alaska 60.015°, -140.097° | 9.5 km | - | - | - | Auto | USGS → |
September 6, 2021 brought a magnitude 2.5 earthquake 56 km NNW of Yakutat, Alaska, logged at 21:19 UTC. Coming 14 hours after a magnitude 4.1 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. | ||||||||
2021-09-06 2021-09-06 21:16:25 UTC | 4.6mb | 120 km SE of Pondaguitan, Philippines 5.530°, 126.883° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
September 6, 2021 brought a magnitude 4.6 earthquake 120 km SE of Pondaguitan, Philippines, logged at 21:16 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 21:10:55 UTC | 3.1ml | 54 km NNW of Yakutat, Alaska 59.990°, -140.125° | 2.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.1 event was detected 54 km NNW of Yakutat, Alaska on September 6, 2021, with origin time 21:10 UTC. Coming 14 hours after a magnitude 4.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 20:59:21 UTC | 4.6mb | 41 km SSE of Kushima, Japan 31.167°, 131.467° | 45.9 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2021 at 20:59 UTC, a magnitude 4.6 earthquake struck 41 km SSE of Kushima, Japan. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 20:32:22 UTC | 2.5ml | 13 km WNW of Ault Field, Washington 48.390°, -122.844° | 23.0 km | 5 | - | - | ✓ Reviewed | USGS → |
At 20:32 UTC on September 6, 2021, a magnitude 2.5 tremor occurred 13 km WNW of Ault Field, Washington. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 20:27:05 UTC | 2.2ml | 25 km NNW of Wisdom, Montana 45.815°, -113.624° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 25 km NNW of Wisdom, Montana came in on September 6, 2021 at 20:27 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 20:24:32 UTC | 4.4mb | South Sandwich Islands region -59.688°, -26.251° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake in the South Sandwich Islands region with origin time 20:24 UTC on September 6, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 19:30:27 UTC | 2.2md | 7 km WSW of La Parguera, Puerto Rico 17.952°, -67.109° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 7 km WSW of La Parguera, Puerto Rico on September 6, 2021, with origin time 19:30 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 10 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 18:49:57 UTC | 2.3ml | 52 km NNW of Yakutat, Alaska 59.977°, -140.110° | 11.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 52 km NNW of Yakutat, Alaska on September 6, 2021 at 18:49 UTC. Coming 12 hours after a magnitude 4.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 18:13:59 UTC | 2.2ml | 71 km WNW of Happy Valley, Alaska 60.137°, -152.952° | 115.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 71 km WNW of Happy Valley, Alaska on September 6, 2021 at 18:13 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 18:13:34 UTC | 2.1ml | 6 km E of P?hala, Hawaii 19.210°, -155.421° | 31.7 km | - | - | - | Auto | USGS → |
At 18:13 UTC on September 6, 2021, a magnitude 2.1 tremor occurred 6 km E of P?hala, Hawaii. Coming 10 hours after a magnitude 2.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 18:13:30 UTC | 4.2mb | 108 km NW of Orlik, Russia 53.274°, 98.810° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 108 km NW of Orlik, Russia on September 6, 2021 at 18:13 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 17:48:31 UTC | 4.6mb | South Sandwich Islands region -56.600°, -25.125° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded in the South Sandwich Islands region on September 6, 2021 at 17:48 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 17:31:23 UTC | 5.1mb | north of Svalbard 86.062°, 32.947° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 17:31 UTC on September 6, 2021, a magnitude 5.1 tremor occurred north of Svalbard. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 17:28:02 UTC | 3.0ml | 156 km S of False Pass, Alaska 53.450°, -163.566° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 156 km S of False Pass, Alaska came in on September 6, 2021 at 17:28 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 17:23:12 UTC | 2.1ml | 6 km SW of Herriman, Utah 40.469°, -112.074° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 6 km SW of Herriman, Utah on September 6, 2021 at 17:23 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. | ||||||||
2021-09-06 2021-09-06 17:07:31 UTC | 2.0ml | 13 km NNW of La Pocatière, Canada 47.472°, -70.132° | 16.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 13 km NNW of La Pocatière, Canada on September 6, 2021 at 17:07 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-06 2021-09-06 17:06:36 UTC | 2.3md | 1km NNW of The Geysers, CA 38.785°, -122.761° | 0.5 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2021 at 17:06 UTC, a magnitude 2.3 earthquake struck 1km NNW of The Geysers, CA. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. 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 September 6, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.