Earthquakes on May 31, 2026
233
EARTHQUAKES on May 31, 2026
24-hour UTC period · USGS data
LARGEST: M6.0 — 33 km NW of Valparaíso, Chile
25 km deep · 155 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
49
M3.0–3.9
11
M2.0–2.9
47
M1.0–1.9
123
Activity Summary
233
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
6.0
33 km NW of Valparaíso, Chile
21:34 UTC · 25.0 km deep
Felt by 155
5.0
Kermadec Islands, New Zealand
19:15 UTC · 107.6 km deep
5.0
71 km NW of Port-Vila, Vanuatu
02:48 UTC · 35.0 km deep
Felt by 3
4.9
47 km NW of Valparaíso, Chile
21:46 UTC · 10.0 km deep
Felt by 11
4.9
south of the Fiji Islands
03:57 UTC · 481.6 km deep
4.9
268 km SW of Grindavík, Iceland
00:54 UTC · 10.0 km deep
4.8
32 km NNW of Valparaíso, Chile
21:52 UTC · 23.7 km deep
Felt by 8
4.7
163 km SE of Alo, Wallis and Futuna
22:03 UTC · 10.0 km deep
Earthquake Map — May 31, 2026
All Earthquakes — May 31, 2026
Showing 30 of 110 (filtered from 233)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-05-31 2026-05-31 23:43:42 UTC | 2.0ml | 18 km SE of Port Hueneme, CA 34.022°, -119.068° | 9.8 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026, worldwide seismic activity registered a magnitude 2.0 earthquake 18 km SE of Port Hueneme, CA at 23:43 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 23:29:48 UTC | 3.4md | 31 km NW of Rincón, Puerto Rico 18.502°, -67.492° | 9.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.4 earthquake 31 km NW of Rincón, Puerto Rico at 23:29 UTC on May 31, 2026. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 23:27:55 UTC | 4.5mb | South Sandwich Islands region -57.957°, -25.611° | 80.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake in the South Sandwich Islands region with origin time 23:27 UTC on May 31, 2026. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 22:56:35 UTC | 2.6ml | 24 km SSW of Atoka, New Mexico 32.563°, -104.476° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026 at 22:56 UTC, a magnitude 2.6 earthquake struck 24 km SSW of Atoka, New Mexico. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 22:18:34 UTC | 4.3mb | 23 km NNE of San Martín, Argentina -31.231°, -68.402° | 114.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 23 km NNE of San Martín, Argentina came in on May 31, 2026 at 22:18 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 22:09:58 UTC | 4.3mb | 35 km NNW of Valparaíso, Chile -32.745°, -71.792° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 35 km NNW of Valparaíso, Chile on May 31, 2026 at 22:09 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.0 earthquake that occurred about 1 hours earlier. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 22:03:14 UTC | 4.7mb | 163 km SE of Alo, Wallis and Futuna -15.462°, -177.162° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake 163 km SE of Alo, Wallis and Futuna came in on May 31, 2026 at 22:03 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:52:11 UTC | 4.8mwr | 32 km NNW of Valparaíso, Chile -32.793°, -71.816° | 23.7 km | 8 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected 32 km NNW of Valparaíso, Chile on May 31, 2026, with origin time 21:52 UTC. It arrived roughly 1 hours after a larger magnitude 6.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:52:03 UTC | 2.9ml | 142 km SSE of Atka, Alaska 51.123°, -173.072° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026, worldwide seismic activity registered a magnitude 2.9 earthquake 142 km SSE of Atka, Alaska at 21:52 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:46:54 UTC | 4.9mb | 47 km NW of Valparaíso, Chile -32.692°, -71.933° | 10.0 km | 11 | - | - | ✓ Reviewed | USGS → |
On May 31, 2026, worldwide seismic activity registered a magnitude 4.9 earthquake 47 km NW of Valparaíso, Chile at 21:46 UTC. It arrived roughly 1 hours after a larger magnitude 6.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:41:54 UTC | 4.6mb | 290 km WNW of Houma, Tonga -19.755°, -177.650° | 565.7 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026 at 21:41 UTC, a magnitude 4.6 earthquake struck 290 km WNW of Houma, Tonga. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:40:57 UTC | 4.3mb | south of the Fiji Islands -22.951°, 179.683° | 636.0 km | - | - | - | ✓ Reviewed | USGS → |
May 31, 2026 brought a magnitude 4.3 earthquake south of the Fiji Islands, logged at 21:40 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:40:26 UTC | 4.3mb | 228 km SSE of Şalālah, Oman 15.043°, 54.727° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026 at 21:40 UTC, a magnitude 4.3 earthquake struck 228 km SSE of Şalālah, Oman. It arrived roughly 1 hours after a larger magnitude 4.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:36:42 UTC | 4.5mb | 241 km SSE of Şalālah, Oman 14.942°, 54.789° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026, worldwide seismic activity registered a magnitude 4.5 earthquake 241 km SSE of Şalālah, Oman at 21:36 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:34:17 UTC | 6.0mww | 33 km NW of Valparaíso, Chile -32.829°, -71.890° | 25.0 km | 155 | V | green | ✓ Reviewed | USGS → |
On May 31, 2026 at 21:34 UTC, a magnitude 6.0 earthquake struck 33 km NW of Valparaíso, Chile. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M6.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 21:28:22 UTC | 4.2mb | 54 km NW of Abepura, Indonesia -2.273°, 140.267° | 23.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 54 km NW of Abepura, Indonesia on May 31, 2026, with origin time 21:28 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:54:37 UTC | 4.4mwr | 30 km N of Jōetsu, Japan 37.417°, 138.182° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 30 km N of Jōetsu, Japan with origin time 20:54 UTC on May 31, 2026. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:51:50 UTC | 2.2ml | 81 km SE of Akutan, Alaska 53.612°, -164.901° | 27.2 km | - | - | - | ✓ Reviewed | USGS → |
On May 31, 2026 at 20:51 UTC, a magnitude 2.2 earthquake struck 81 km SE of Akutan, Alaska. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:51:27 UTC | 2.2ml | 84 km SSW of Adak, Alaska 51.162°, -177.042° | 22.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 84 km SSW of Adak, Alaska on May 31, 2026 at 20:51 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:43:56 UTC | 4.2mb | 134 km N of Lae, Papua New Guinea -5.504°, 147.020° | 194.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 134 km N of Lae, Papua New Guinea came in on May 31, 2026 at 20:43 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:35:38 UTC | 2.7ml | 86 km SSE of Nikolski, Alaska 52.217°, -168.372° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 86 km SSE of Nikolski, Alaska came in on May 31, 2026 at 20:35 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 20:33:20 UTC | 2.5md | 10 km WNW of The Geysers, CA 38.820°, -122.855° | 2.6 km | 2 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 10 km WNW of The Geysers, CA on May 31, 2026, with origin time 20:33 UTC. In the 72 hours after this event, the USGS recorded 8 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 19:58:28 UTC | 2.6ml | 221 km WSW of Adak, Alaska 51.067°, -179.554° | 10.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 221 km WSW of Adak, Alaska on May 31, 2026 at 19:58 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 19:46:47 UTC | 4.7mb | Bonin Islands, Japan region 26.477°, 143.800° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place in the Bonin Islands, Japan region on May 31, 2026 at 19:46 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 19:18:07 UTC | 3.9mb | 204 km WNW of Attu Station, Alaska 53.266°, 170.216° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.9 earthquake 204 km WNW of Attu Station, Alaska with origin time 19:18 UTC on May 31, 2026. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 19:15:39 UTC | 5.0mb | Kermadec Islands, New Zealand -30.677°, -178.860° | 107.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.0 earthquake was recorded near Kermadec Islands, New Zealand on May 31, 2026 at 19:15 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 19:11:32 UTC | 2.3md | 15 km NW of San Simeon, CA 35.742°, -121.299° | 10.7 km | - | - | - | ✓ Reviewed | USGS → |
May 31, 2026 brought a magnitude 2.3 earthquake 15 km NW of San Simeon, CA, logged at 19:11 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 18:36:29 UTC | 2.1ml | 41 km WSW of Denali Park, Alaska 63.594°, -149.694° | 122.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 41 km WSW of Denali Park, Alaska came in on May 31, 2026 at 18:36 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 18:22:57 UTC | 3.1ml | 299 km WSW of Adak, Alaska 51.089°, 179.243° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
May 31, 2026 brought a magnitude 3.1 earthquake 299 km WSW of Adak, Alaska, logged at 18:22 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-05-31 2026-05-31 18:21:00 UTC | 2.0ml | 29 km W of Ivanof Bay, Alaska 55.942°, -159.945° | 7.5 km | - | - | - | Auto | USGS → |
At 18:21 UTC on May 31, 2026, a magnitude 2.0 tremor occurred 29 km W of Ivanof Bay, Alaska. The event was offshore. See the M2.0 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 May 31, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.