Earthquakes on May 20, 2026: 212 Worldwide, Largest M6.6

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2026-05-20 2026-05-20 23:45:40 UTC	2.6ml	19 km E of Naalehu, Hawaii 19.045°, -155.401°	34.5 km	-	-	-	✓ Reviewed	USGS →
At 23:45 UTC on May 20, 2026, a magnitude 2.6 tremor occurred 19 km E of Naalehu, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 6 hours earlier. The hypocenter lay at 34.5 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 19.045°N, -155.401°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:41:46 UTC	4.0mb	14 km W of Agía Galíni, Greece 35.106°, 24.533°	10.0 km	-	-	-	✓ Reviewed	USGS →
May 20, 2026 brought a magnitude 4.0 earthquake 14 km W of Agía Galíni, Greece, logged at 23:41 UTC. At a depth of 10.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 35.106°, 24.533°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:25:36 UTC	2.2ml	45 km N of Searles Valley, CA 36.175°, -117.386°	2.4 km	-	-	-	✓ Reviewed	USGS →
On May 20, 2026, worldwide seismic activity registered a magnitude 2.2 earthquake 45 km N of Searles Valley, CA at 23:25 UTC. At a depth of just 2.4 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 36.175°, -117.386°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:21:35 UTC	2.6ml	11 km NE of Hildale, Utah 37.067°, -112.859°	8.7 km	1	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.6 earthquake 11 km NE of Hildale, Utah at 23:21 UTC on May 20, 2026. A small number of nearby observers (1) submitted felt reports to the USGS. At a depth of 8.7 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 37.067°, -112.859°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:20:02 UTC	2.4ml	123 km ESE of Chignik, Alaska 55.697°, -156.736°	266.4 km	-	-	-	Auto	USGS →
Seismographs logged a magnitude 2.4 earthquake 123 km ESE of Chignik, Alaska with origin time 23:20 UTC on May 20, 2026. The hypocenter lay at 266.4 km, placing this in the intermediate depth category. The epicenter is at 55.697°, -156.736°. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:12:56 UTC	4.9mb	258 km WSW of Tual, Indonesia -6.105°, 130.465°	121.9 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.9 seismic event took place 258 km WSW of Tual, Indonesia on May 20, 2026 at 23:12 UTC. The hypocenter lay at 121.9 km, placing this in the intermediate depth category. Coordinates: -6.105°, 130.465°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:07:21 UTC	2.1ml	139 km S of McCarthy, Alaska 60.181°, -142.898°	6.0 km	-	-	-	✓ Reviewed	USGS →
On May 20, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 139 km S of McCarthy, Alaska at 23:07 UTC. At a depth of 6.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.181°, -142.898°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:01:01 UTC	5.7mww	South Sandwich Islands region -56.158°, -28.103°	137.0 km	-	III	green	✓ Reviewed	USGS →
Seismographs logged a magnitude 5.7 earthquake in the South Sandwich Islands region with origin time 23:01 UTC on May 20, 2026. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. Peak ground motion corresponded to MMI 3.1, classified as light shaking. It ranks as the third largest event in the current dataset. The event originated approximately 137.0 km below the surface, classifying it as intermediate depth. Coordinates: -56.158°, -28.103°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 23:00:17 UTC	2.1ml	55 km ESE of Whittier, Alaska 60.642°, -147.715°	15.6 km	-	-	-	✓ Reviewed	USGS →
At 23:00 UTC on May 20, 2026, a magnitude 2.1 tremor occurred 55 km ESE of Whittier, Alaska. The event originated approximately 15.6 km below the surface, classifying it as shallow crustal. Geolocation places the event at 60.642°N, -147.715°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 22:35:31 UTC	2.2ml	46 km ESE of Chignik, Alaska 56.183°, -157.682°	53.2 km	-	-	-	✓ Reviewed	USGS →
At 22:35 UTC on May 20, 2026, a magnitude 2.2 tremor occurred 46 km ESE of Chignik, Alaska. The hypocenter lay at 53.2 km, placing this in the shallow crustal category. The epicenter is at 56.183°, -157.682°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 22:01:39 UTC	2.0md	11 km E of Pāhala, Hawaii 19.188°, -155.371°	29.4 km	-	-	-	✓ Reviewed	USGS →
On May 20, 2026 at 22:01 UTC, a magnitude 2.0 earthquake struck 11 km E of Pāhala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.1 earthquake that occurred about 2 hours earlier. The hypocenter lay at 29.4 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 19.188°N, -155.371°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:57:47 UTC	2.9md	2 km ENE of Magas Arriba, Puerto Rico 18.024°, -66.750°	12.3 km	-	-	-	✓ Reviewed	USGS →
On May 20, 2026, worldwide seismic activity registered a magnitude 2.9 earthquake 2 km ENE of Magas Arriba, Puerto Rico at 21:57 UTC. At a depth of 12.3 km, the event was shallow crustal. Coordinates: 18.024°, -66.750°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:33:46 UTC	4.6mb	South Sandwich Islands region -57.057°, -25.043°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.6 earthquake was recorded in the South Sandwich Islands region on May 20, 2026 at 21:33 UTC. This was a shallow crustal earthquake, focused at 10.0 km depth. Coordinates: -57.057°, -25.043°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:27:25 UTC	4.2mb	69 km ESE of Hitachi, Japan 36.375°, 141.376°	35.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.2 earthquake 69 km ESE of Hitachi, Japan at 21:27 UTC on May 20, 2026. At a depth of 35.0 km, the event was shallow crustal. Geolocation places the event at 36.375°N, 141.376°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:24:43 UTC	2.8ml	17 km SE of Silver Springs, Nevada 39.308°, -119.069°	11.2 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.8 event was detected 17 km SE of Silver Springs, Nevada on May 20, 2026, with origin time 21:24 UTC. The hypocenter lay at 11.2 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 39.308°, -119.069°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:20:22 UTC	2.7ml	51 km ENE of Chase, Alaska 62.705°, -149.257°	55.3 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.7 earthquake 51 km ENE of Chase, Alaska came in on May 20, 2026 at 21:20 UTC. At a depth of 55.3 km, the event was shallow crustal. The epicenter is at 62.705°, -149.257°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:09:22 UTC	3.3ml	81 km ESE of Atka, Alaska 51.850°, -173.156°	60.1 km	-	-	-	✓ Reviewed	USGS →
This magnitude 3.3 event was detected 81 km ESE of Atka, Alaska on May 20, 2026, with origin time 21:09 UTC. The hypocenter lay at 60.1 km, placing this in the shallow crustal category. The epicenter is at 51.850°, -173.156°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:06:40 UTC	2.5ml	87 km SSE of Unalaska, Alaska 53.168°, -165.938°	35.0 km	-	-	-	✓ Reviewed	USGS →
May 20, 2026 brought a magnitude 2.5 earthquake 87 km SSE of Unalaska, Alaska, logged at 21:06 UTC. At a depth of 35.0 km, the event was shallow crustal. The epicenter is at 53.168°, -165.938°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 21:04:58 UTC	4.4mb	56 km S of Kawalu, Indonesia -7.886°, 108.282°	76.3 km	-	-	-	✓ Reviewed	USGS →
May 20, 2026 brought a magnitude 4.4 earthquake 56 km S of Kawalu, Indonesia, logged at 21:04 UTC. This was a intermediate depth earthquake, focused at 76.3 km depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at -7.886°N, 108.282°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 20:44:25 UTC	2.1ml	126 km WNW of Yakutat, Alaska 59.840°, -141.903°	1.4 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.1 earthquake 126 km WNW of Yakutat, Alaska at 20:44 UTC on May 20, 2026. At a depth of just 1.4 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 59.840°, -141.903°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 20:40:14 UTC	3.3ml	11 km ENE of Nikolaevsk, Alaska 59.865°, -151.443°	75.9 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.3 earthquake 11 km ENE of Nikolaevsk, Alaska came in on May 20, 2026 at 20:40 UTC. At a depth of 75.9 km, the event was intermediate depth. Geolocation places the event at 59.865°N, -151.443°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 20:03:05 UTC	2.1ml	3 km SW of Pāhala, Hawaii 19.175°, -155.498°	33.0 km	-	-	-	✓ Reviewed	USGS →
May 20, 2026 brought a magnitude 2.1 earthquake 3 km SW of Pāhala, Hawaii, logged at 20:03 UTC. This was a shallow crustal earthquake, focused at 33.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 19.175°, -155.498°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 20:01:58 UTC	2.2ml	30 km WNW of Ivanof Bay, Alaska 55.983°, -159.952°	5.2 km	-	-	-	Auto	USGS →
The USGS recorded this magnitude 2.2 earthquake 30 km WNW of Ivanof Bay, Alaska at 20:01 UTC on May 20, 2026. At a depth of 5.2 km, the event was shallow crustal. Geolocation places the event at 55.983°N, -159.952°E. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 19:58:33 UTC	2.0ml	13 km SE of Pearsall, Texas 28.804°, -98.996°	7.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.0 earthquake 13 km SE of Pearsall, Texas with origin time 19:58 UTC on May 20, 2026. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. The event originated approximately 7.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 28.804°, -98.996°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 19:40:56 UTC	2.1ml	24 km NW of Huntington, Oregon 44.515°, -117.468°	-1.1 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.1 earthquake 24 km NW of Huntington, Oregon with origin time 19:40 UTC on May 20, 2026. At a depth of just -1.1 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 44.515°, -117.468°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 19:30:40 UTC	2.7ml	89 km NW of Yakutat, Alaska 60.174°, -140.735°	1.3 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.7 seismic event took place 89 km NW of Yakutat, Alaska on May 20, 2026 at 19:30 UTC. At a depth of just 1.3 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 60.174°N, -140.735°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 19:00:00 UTC	2.5md	19 km S of Esperanza, Puerto Rico 17.927°, -65.500°	32.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.5 seismic event took place 19 km S of Esperanza, Puerto Rico on May 20, 2026 at 19:00 UTC. The hypocenter lay at 32.2 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 17.927°, -65.500°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 18:46:32 UTC	2.7ml	5 km N of Stroud, Oklahoma 35.798°, -96.655°	7.9 km	3	-	-	✓ Reviewed	USGS →
May 20, 2026 brought a magnitude 2.7 earthquake 5 km N of Stroud, Oklahoma, logged at 18:46 UTC. A small number of nearby observers (3) submitted felt reports to the USGS. This was a shallow crustal earthquake, focused at 7.9 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 35.798°, -96.655°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 18:36:39 UTC	5.0mb	southern East Pacific Rise -54.745°, -118.662°	10.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 5.0 event was detected near southern East Pacific Rise on May 20, 2026, with origin time 18:36 UTC. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. The epicenter is at -54.745°, -118.662°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-05-20 2026-05-20 18:17:04 UTC	2.6ml	34 km SE of Mina, Nevada 38.185°, -117.808°	1.7 km	-	-	-	Auto	USGS →
On May 20, 2026, worldwide seismic activity registered a magnitude 2.6 earthquake 34 km SE of Mina, Nevada at 18:17 UTC. At a depth of just 1.7 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 38.185°, -117.808°. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.6 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 May 20, 2026. 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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