Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2021-08-27 2021-08-27 23:53:51 UTC	4.9mb	South Sandwich Islands region -56.981°, -25.080°	10.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.9 earthquake in the South Sandwich Islands region at 23:53 UTC on August 27, 2021. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 23:50:19 UTC	3.3ml	77 km ESE of Chignik, Alaska 56.045°, -157.241°	9.7 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.3 earthquake 77 km ESE of Chignik, Alaska came in on August 27, 2021 at 23:50 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 23:44:32 UTC	2.4ml	9 km NNE of Hamilton, Washington 48.600°, -121.957°	2.4 km	7	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.4 earthquake 9 km NNE of Hamilton, Washington came in on August 27, 2021 at 23:44 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 23:08:49 UTC	4.2mb	289 km E of Levuka, Fiji -18.450°, -177.972°	511.7 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.2 event was detected 289 km E of Levuka, Fiji on August 27, 2021, with origin time 23:08 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:50:11 UTC	2.1md	1km NE of Pinnacles, CA 36.539°, -121.132°	8.8 km	-	-	-	✓ Reviewed	USGS →
At 22:50 UTC on August 27, 2021, a magnitude 2.1 tremor occurred 1km NE of Pinnacles, CA. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:35:43 UTC	4.9mb	South Sandwich Islands region -60.331°, -25.239°	10.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.9 event was detected in the South Sandwich Islands region on August 27, 2021, with origin time 22:35 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:23:47 UTC	4.8mb	South Sandwich Islands region -57.377°, -25.154°	32.4 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.8 earthquake in the South Sandwich Islands region came in on August 27, 2021 at 22:23 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:23:20 UTC	4.7mb	27 km SW of Vilque, Peru -15.956°, -70.421°	78.5 km	-	-	-	✓ Reviewed	USGS →
On August 27, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake 27 km SW of Vilque, Peru at 22:23 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.8 earthquake that occurred about 1 hours earlier. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:08:53 UTC	5.2mb	South Sandwich Islands region -59.653°, -26.226°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 5.2 earthquake was recorded in the South Sandwich Islands region on August 27, 2021 at 22:08 UTC. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:08:32 UTC	4.8mb	South Sandwich Islands region -59.560°, -25.998°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.8 seismic event took place in the South Sandwich Islands region on August 27, 2021 at 22:08 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:08:18 UTC	2.3md	25km SSW of Smith Valley, NV 38.567°, -119.421°	1.6 km	-	-	-	✓ Reviewed	USGS →
At 22:08 UTC on August 27, 2021, a magnitude 2.3 tremor occurred 25km SSW of Smith Valley, NV. Coming 17 hours after a magnitude 4.4 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:06:40 UTC	5.1mb	South Sandwich Islands region -60.073°, -27.265°	42.5 km	-	-	-	✓ Reviewed	USGS →
On August 27, 2021, worldwide seismic activity registered a magnitude 5.1 earthquake in the South Sandwich Islands region at 22:06 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 22:03:22 UTC	4.5mb	93 km N of Ambon, Indonesia -2.856°, 128.113°	10.0 km	-	-	-	✓ Reviewed	USGS →
August 27, 2021 brought a magnitude 4.5 earthquake 93 km N of Ambon, Indonesia, logged at 22:03 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 21:40:52 UTC	4.8mb	South Sandwich Islands region -58.767°, -25.110°	35.0 km	-	-	-	✓ Reviewed	USGS →
August 27, 2021 brought a magnitude 4.8 earthquake in the South Sandwich Islands region, logged at 21:40 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 21:30:23 UTC	4.1mb	17 km SSE of Ruteng, Indonesia -8.761°, 120.509°	118.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.1 seismic event took place 17 km SSE of Ruteng, Indonesia on August 27, 2021 at 21:30 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 21:16:31 UTC	2.5md	4 km SSE of La Parguera, Puerto Rico 17.942°, -67.025°	11.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.5 earthquake 4 km SSE of La Parguera, Puerto Rico came in on August 27, 2021 at 21:16 UTC. It arrived roughly 9 hours after a larger magnitude 3.0 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.
2021-08-27 2021-08-27 21:04:52 UTC	2.4md	7 km WSW of Volcano, Hawaii 19.409°, -155.292°	-0.2 km	-	-	-	Auto	USGS →
August 27, 2021 brought a magnitude 2.4 earthquake 7 km WSW of Volcano, Hawaii, logged at 21:04 UTC. It arrived roughly 11 hours after a larger magnitude 2.8 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 21:00:23 UTC	4.8mb	18 km SSE of Santa Lucía, Peru -15.848°, -70.522°	46.0 km	-	-	-	✓ Reviewed	USGS →
On August 27, 2021 at 21:00 UTC, a magnitude 4.8 earthquake struck 18 km SSE of Santa Lucía, Peru. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:43:51 UTC	2.2ml	9 km E of P?hala, Hawaii 19.218°, -155.392°	30.5 km	-	-	-	Auto	USGS →
Reports of a magnitude 2.2 earthquake 9 km E of P?hala, Hawaii came in on August 27, 2021 at 20:43 UTC. It arrived roughly 10 hours after a larger magnitude 2.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:40:01 UTC	4.2mb	128 km NNE of Labuan Bajo, Indonesia -7.394°, 120.248°	385.2 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.2 earthquake 128 km NNE of Labuan Bajo, Indonesia came in on August 27, 2021 at 20:40 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:31:52 UTC	4.4mb	Fiji region -20.664°, -178.260°	550.4 km	-	-	-	✓ Reviewed	USGS →
At 20:31 UTC on August 27, 2021, a magnitude 4.4 tremor occurred in the Fiji region. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:28:34 UTC	4.2mb	15 km ESE of Moron, Haiti 18.502°, -74.120°	14.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.2 seismic event took place 15 km ESE of Moron, Haiti on August 27, 2021 at 20:28 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:22:25 UTC	3.4ml	173 km SE of Sand Point, Alaska 54.404°, -158.340°	17.3 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 3.4 earthquake 173 km SE of Sand Point, Alaska at 20:22 UTC on August 27, 2021. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 20:02:06 UTC	2.9ml	57 km W of Nikolski, Alaska 52.954°, -169.724°	11.2 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.9 event was detected 57 km W of Nikolski, Alaska on August 27, 2021, with origin time 20:02 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:58:21 UTC	2.0ml	56 km S of Whites City, New Mexico 31.670°, -104.391°	7.8 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 earthquake was recorded 56 km S of Whites City, New Mexico on August 27, 2021 at 19:58 UTC. It arrived roughly 1 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:55:35 UTC	2.6ml	55 km S of Whites City, New Mexico 31.673°, -104.396°	7.4 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.6 seismic event took place 55 km S of Whites City, New Mexico on August 27, 2021 at 19:55 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:53:41 UTC	2.5md	33km NW of Bridgeport, CA 38.468°, -119.490°	8.3 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.5 earthquake 33km NW of Bridgeport, CA with origin time 19:53 UTC on August 27, 2021. Coming 15 hours after a magnitude 4.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:36:16 UTC	2.8md	7 km ESE of La Parguera, Puerto Rico 17.946°, -66.982°	9.0 km	-	-	-	✓ Reviewed	USGS →
On August 27, 2021, worldwide seismic activity registered a magnitude 2.8 earthquake 7 km ESE of La Parguera, Puerto Rico at 19:36 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 7 hours earlier. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:33:08 UTC	4.1mb	south of the Fiji Islands -22.154°, -179.643°	589.8 km	-	-	-	✓ Reviewed	USGS →
August 27, 2021 brought a magnitude 4.1 earthquake south of the Fiji Islands, logged at 19:33 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-08-27 2021-08-27 19:11:30 UTC	2.1md	4km S of Larkfield-Wikiup, CA 38.482°, -122.751°	7.5 km	5	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.1 earthquake 4km S of Larkfield-Wikiup, CA at 19:11 UTC on August 27, 2021. Coming 1 hours after a magnitude 2.5 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.

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 27, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.

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