Earthquakes on March 18, 2026
266
EARTHQUAKES on March 18, 2026
24-hour UTC period · USGS data
LARGEST: M5.2 — Mid-Indian Ridge
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
54
M3.0–3.9
18
M2.0–2.9
85
M1.0–1.9
106
Activity Summary
266
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.2
Mid-Indian Ridge
11:10 UTC · 10.0 km deep
5.0
12 km N of Los Amates, Guatemala
17:35 UTC · 10.0 km deep
Felt by 11
5.0
233 km ESE of Attu Station, Alaska
04:36 UTC · 21.8 km deep
4.9
Mid-Indian Ridge
12:11 UTC · 10.0 km deep
4.8
south of the Kermadec Islands
21:07 UTC · 10.0 km deep
4.8
Mid-Indian Ridge
14:51 UTC · 10.0 km deep
4.8
Izu Islands, Japan region
10:08 UTC · 10.0 km deep
Felt by 1
4.7
Mid-Indian Ridge
13:36 UTC · 10.0 km deep
Earthquake Map — March 18, 2026
All Earthquakes — March 18, 2026
Showing 30 of 160 (filtered from 266)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-03-18 2026-03-18 23:52:37 UTC | 2.1ml | 21 km ENE of Cantwell, Alaska 63.463°, -148.547° | 1.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 21 km ENE of Cantwell, Alaska with origin time 23:52 UTC on March 18, 2026. It arrived roughly 1 hours after a larger magnitude 2.4 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 23:44:04 UTC | 2.4ml | 21 km ENE of Cantwell, Alaska 63.471°, -148.569° | 3.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 21 km ENE of Cantwell, Alaska on March 18, 2026 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. | ||||||||
2026-03-18 2026-03-18 23:32:47 UTC | 3.9md | 99 km NW of Sandy Ground Village, Anguilla 18.717°, -63.856° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2026 brought a magnitude 3.9 earthquake 99 km NW of Sandy Ground Village, Anguilla, logged at 23:32 UTC. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 23:20:42 UTC | 2.0ml | 116 km N of Yakutat, Alaska 60.596°, -139.737° | 9.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 116 km N of Yakutat, Alaska came in on March 18, 2026 at 23:20 UTC. It arrived roughly 18 hours after a larger magnitude 2.8 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. | ||||||||
2026-03-18 2026-03-18 22:50:25 UTC | 2.6ml | 113 km N of Yakutat, Alaska 60.569°, -139.757° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 113 km N of Yakutat, Alaska at 22:50 UTC on March 18, 2026. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 18 hours earlier. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 22:31:33 UTC | 2.4ml | 47 km NE of Yakutat, Alaska 59.805°, -139.066° | 3.5 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2026 brought a magnitude 2.4 earthquake 47 km NE of Yakutat, Alaska, logged at 22:31 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. | ||||||||
2026-03-18 2026-03-18 22:11:24 UTC | 4.3mb | 2 km ESE of Polo, Philippines 16.186°, 119.970° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026, worldwide seismic activity registered a magnitude 4.3 earthquake 2 km ESE of Polo, Philippines at 22:11 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 22:09:13 UTC | 2.5ml | 70 km SE of Chalkyitsik, Alaska 66.194°, -142.642° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 70 km SE of Chalkyitsik, Alaska with origin time 22:09 UTC on March 18, 2026. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 22:07:55 UTC | 4.5mb | 54 km SSW of Maisí, Cuba 19.773°, -74.298° | 12.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026 at 22:07 UTC, a magnitude 4.5 earthquake struck 54 km SSW of Maisí, Cuba. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 21:33:03 UTC | 4.2mb | 13 km NW of Baradères, Haiti 18.572°, -73.727° | 14.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026 at 21:33 UTC, a magnitude 4.2 earthquake struck 13 km NW of Baradères, Haiti. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 21:23:02 UTC | 4.6mb | 49 km E of Yokohama, Japan 41.019°, 141.833° | 66.7 km | 1 | - | - | ✓ Reviewed | USGS → |
On March 18, 2026 at 21:23 UTC, a magnitude 4.6 earthquake struck 49 km E of Yokohama, Japan. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 21:07:50 UTC | 4.8mb | south of the Kermadec Islands -33.049°, -178.540° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:07 UTC on March 18, 2026, a magnitude 4.8 tremor occurred south of the Kermadec Islands. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 21:02:38 UTC | 2.4ml | 212 km W of Adak, Alaska 51.790°, -179.713° | 135.7 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026 at 21:02 UTC, a magnitude 2.4 earthquake struck 212 km W of Adak, Alaska. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 20:54:49 UTC | 2.0ml | 12 km ESE of Susitna, Alaska 61.494°, -150.294° | 57.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 12 km ESE of Susitna, Alaska on March 18, 2026 at 20:54 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 20:51:05 UTC | 4.5mb | Fiji region -19.337°, -177.553° | 572.0 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded in the Fiji region on March 18, 2026 at 20:51 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 20:33:18 UTC | 2.6ml | Rat Islands, Aleutian Islands, Alaska 51.648°, 178.028° | 70.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected near Rat Islands, Aleutian Islands, Alaska on March 18, 2026, with origin time 20:33 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 20:19:45 UTC | 4.2ml | 71 km S of Kaktovik, Alaska 69.490°, -143.523° | 7.7 km | - | IV | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 71 km S of Kaktovik, Alaska on March 18, 2026 at 20:19 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:57:42 UTC | 2.9ml | 29 km S of Centennial Park, Arizona 36.688°, -113.041° | 11.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 29 km S of Centennial Park, Arizona on March 18, 2026, with origin time 19:57 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:47:27 UTC | 2.5md | 5 km WSW of Liborio Negron Torres, Puerto Rico 18.016°, -66.985° | 11.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 5 km WSW of Liborio Negron Torres, Puerto Rico on March 18, 2026 at 19:47 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:44:55 UTC | 2.2ml | 78 km SE of Adak, Alaska 51.296°, -175.997° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026, worldwide seismic activity registered a magnitude 2.2 earthquake 78 km SE of Adak, Alaska at 19:44 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:34:59 UTC | 3.5mb | 112 km SSE of Sand Point, Alaska 54.371°, -159.991° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026, worldwide seismic activity registered a magnitude 3.5 earthquake 112 km SSE of Sand Point, Alaska at 19:34 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:30:47 UTC | 2.9ml | 82 km S of Kaktovik, Alaska 69.395°, -143.669° | 2.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 82 km S of Kaktovik, Alaska came in on March 18, 2026 at 19:30 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:13:12 UTC | 2.0ml | 17 km WNW of Four Mile Road, Alaska 64.656°, -149.468° | 15.7 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2026 brought a magnitude 2.0 earthquake 17 km WNW of Four Mile Road, Alaska, logged at 19:13 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:13:04 UTC | 2.2ml | 52 km NW of Yakutat, Alaska 59.928°, -140.264° | 11.2 km | - | - | - | ✓ Reviewed | USGS → |
At 19:13 UTC on March 18, 2026, a magnitude 2.2 tremor occurred 52 km NW of Yakutat, Alaska. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 19:06:45 UTC | 2.3ml | 32 km WNW of Puako, Hawaii 20.055°, -156.136° | 40.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 32 km WNW of Puako, Hawaii with origin time 19:06 UTC on March 18, 2026. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 18:42:49 UTC | 2.6ml | 31 km WNW of Nikiski, Alaska 60.797°, -151.826° | 86.3 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 31 km WNW of Nikiski, Alaska came in on March 18, 2026 at 18:42 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 18:31:32 UTC | 2.1ml | 60 km S of Whites City, New Mexico 31.633°, -104.365° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 60 km S of Whites City, New Mexico at 18:31 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 5 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 18:29:26 UTC | 3.7mb | 124 km ESE of Attu Station, Alaska 52.269°, 174.765° | 66.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.7 earthquake was recorded 124 km ESE of Attu Station, Alaska on March 18, 2026 at 18:29 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 18:21:52 UTC | 2.1ml | 54 km ENE of Pedro Bay, Alaska 60.042°, -153.270° | 139.8 km | - | - | - | ✓ Reviewed | USGS → |
At 18:21 UTC on March 18, 2026, a magnitude 2.1 tremor occurred 54 km ENE of Pedro Bay, Alaska. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-03-18 2026-03-18 17:53:02 UTC | 2.5md | 4 km SW of San Juan Bautista, CA 36.821°, -121.569° | 8.3 km | 2 | - | - | ✓ Reviewed | USGS → |
March 18, 2026 brought a magnitude 2.5 earthquake 4 km SW of San Juan Bautista, CA, logged at 17:53 UTC. The event was offshore. 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 March 18, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.