Earthquakes on March 15, 2023
350
EARTHQUAKES on March 15, 2023
24-hour UTC period · USGS data
57 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
41
M3.0–3.9
14
M2.0–2.9
115
M1.0–1.9
179
Activity Summary
350
Total earthquakes
~250
Daily average
Elevated
Activity level
1
M5.0+ events
Significant Earthquakes (M4.5+)
5.4
177 km ESE of Sarangani, Philippines
21:25 UTC · 56.5 km deep
4.9
central Mid-Atlantic Ridge
03:39 UTC · 10.0 km deep
4.9
94 km NW of Sola, Vanuatu
00:36 UTC · 183.3 km deep
4.8
78 km NNW of Kirakira, Solomon Islands
19:20 UTC · 10.6 km deep
4.7
106 km NNE of Hihifo, Tonga
07:39 UTC · 20.8 km deep
4.7
172 km SSW of Aqqan, China
02:32 UTC · 17.0 km deep
4.6
191 km SE of Kokopo, Papua New Guinea
19:19 UTC · 44.9 km deep
4.6
Off the coast of Aisen, Chile
16:59 UTC · 10.0 km deep
Earthquake Map — March 15, 2023
All Earthquakes — March 15, 2023
Showing 30 of 171 (filtered from 350)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-03-15 2023-03-15 23:53:50 UTC | 2.0ml | 89 km WSW of Karluk, Alaska 57.184°, -155.768° | 58.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 89 km WSW of Karluk, Alaska with origin time 23:53 UTC on March 15, 2023. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 23:43:08 UTC | 2.2ml | Kodiak Island region, Alaska 58.176°, -153.436° | 59.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023 at 23:43 UTC, a magnitude 2.2 earthquake struck in the Kodiak Island region, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 22:46:04 UTC | 2.5md | Tennessee 35.664°, -84.074° | 22.2 km | 7 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake near Tennessee with origin time 22:46 UTC on March 15, 2023. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 22:40:32 UTC | 2.2ml | 41 km NW of Ninilchik, Alaska 60.336°, -152.148° | 86.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 41 km NW of Ninilchik, Alaska on March 15, 2023 at 22:40 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 22:34:39 UTC | 2.7md | 15km N of Deep Springs, CA 37.505°, -117.971° | 0.3 km | 1 | - | - | ✓ Reviewed | USGS → |
On March 15, 2023 at 22:34 UTC, a magnitude 2.7 earthquake struck 15km N of Deep Springs, CA. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 1 hours earlier. 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. | ||||||||
2023-03-15 2023-03-15 22:24:22 UTC | 2.6ml | 21 km SSE of Naalehu, Hawaii 18.884°, -155.526° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023 at 22:24 UTC, a magnitude 2.6 earthquake struck 21 km SSE of Naalehu, Hawaii. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 22:12:33 UTC | 2.5md | 14km N of Deep Springs, CA 37.492°, -117.975° | -1.3 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023, worldwide seismic activity registered a magnitude 2.5 earthquake 14km N of Deep Springs, CA at 22:12 UTC. It arrived roughly 1 hours after a larger magnitude 3.8 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:54:36 UTC | 2.9md | 5 km WSW of Fuig, Puerto Rico 17.966°, -66.966° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 5 km WSW of Fuig, Puerto Rico on March 15, 2023 at 21:54 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 14 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:50:42 UTC | 4.5mb | 18 km ESE of San Pedro, Colombia 3.905°, -76.085° | 177.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 18 km ESE of San Pedro, Colombia on March 15, 2023 at 21:50 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:49:16 UTC | 4.4mb | 157 km NW of Tobelo, Indonesia 2.836°, 127.120° | 52.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 157 km NW of Tobelo, Indonesia on March 15, 2023 at 21:49 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:44:05 UTC | 3.8mw | 16km N of Deep Springs, CA 37.511°, -117.956° | -0.8 km | 3 | III | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.8 earthquake 16km N of Deep Springs, CA with origin time 21:44 UTC on March 15, 2023. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:40:34 UTC | 4.4mb | Macquarie Island region -53.193°, 159.512° | 14.8 km | - | - | - | ✓ Reviewed | USGS → |
March 15, 2023 brought a magnitude 4.4 earthquake in the Macquarie Island region, logged at 21:40 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:36:00 UTC | 2.2md | 5 km WSW of Fuig, Puerto Rico 17.963°, -66.962° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 5 km WSW of Fuig, Puerto Rico came in on March 15, 2023 at 21:36 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 14 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:35:21 UTC | 4.0mwr | 91 km SSW of Antofagasta, Chile -24.367°, -70.841° | 32.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 91 km SSW of Antofagasta, Chile on March 15, 2023, with origin time 21:35 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:33:11 UTC | 2.0ml | 6 km NNW of Mossyrock, Washington 46.578°, -122.527° | 19.3 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023, worldwide seismic activity registered a magnitude 2.0 earthquake 6 km NNW of Mossyrock, Washington at 21:33 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:28:40 UTC | 2.6md | 14km N of Deep Springs, CA 37.499°, -117.978° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023, worldwide seismic activity registered a magnitude 2.6 earthquake 14km N of Deep Springs, CA at 21:28 UTC. Coming 9 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:28:04 UTC | 2.3md | 5 km WSW of Guánica, Puerto Rico 17.944°, -66.954° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 5 km WSW of Guánica, Puerto Rico on March 15, 2023, with origin time 21:28 UTC. Coming 14 hours after a magnitude 4.2 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. | ||||||||
2023-03-15 2023-03-15 21:25:39 UTC | 5.4mww | 177 km ESE of Sarangani, Philippines 4.702°, 126.906° | 56.5 km | - | IV | green | ✓ Reviewed | USGS → |
On March 15, 2023 at 21:25 UTC, a magnitude 5.4 earthquake struck 177 km ESE of Sarangani, Philippines. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on March 15, 2023. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:09:09 UTC | 2.6md | 18km N of Deep Springs, CA 37.533°, -117.982° | 4.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 18km N of Deep Springs, CA at 21:09 UTC on March 15, 2023. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 8 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:08:58 UTC | 4.0mb | 22 km NNW of Tual, Indonesia -5.460°, 132.643° | 56.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.0 earthquake 22 km NNW of Tual, Indonesia came in on March 15, 2023 at 21:08 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:03:26 UTC | 2.1md | 14km N of Deep Springs, CA 37.499°, -117.995° | -1.4 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 14km N of Deep Springs, CA at 21:03 UTC. Coming 8 hours after a magnitude 2.8 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 21:01:01 UTC | 2.7ml | 75 km ESE of Ugashik, Alaska 57.143°, -156.354° | 3.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.7 earthquake 75 km ESE of Ugashik, Alaska with origin time 21:01 UTC on March 15, 2023. 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. | ||||||||
2023-03-15 2023-03-15 20:45:24 UTC | 2.7md | 15km N of Deep Springs, CA 37.510°, -117.975° | 0.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 15km N of Deep Springs, CA at 20:45 UTC on March 15, 2023. It arrived roughly 8 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 M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 20:43:22 UTC | 2.8ml | 13 km NW of Pawnee, Oklahoma 36.423°, -96.912° | 6.4 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 13 km NW of Pawnee, Oklahoma with origin time 20:43 UTC on March 15, 2023. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 20:35:34 UTC | 2.4md | 4 km WSW of Fuig, Puerto Rico 17.976°, -66.956° | 5.2 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023 at 20:35 UTC, a magnitude 2.4 earthquake struck 4 km WSW of Fuig, Puerto Rico. Coming 13 hours after a magnitude 4.2 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. | ||||||||
2023-03-15 2023-03-15 20:14:50 UTC | 2.3md | 5 km WSW of Fuig, Puerto Rico 17.963°, -66.962° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 5 km WSW of Fuig, Puerto Rico at 20:14 UTC on March 15, 2023. Coming 12 hours after a magnitude 4.2 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. | ||||||||
2023-03-15 2023-03-15 20:05:57 UTC | 3.2ml | Wyoming 43.883°, -105.299° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place near Wyoming on March 15, 2023 at 20:05 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 19:49:40 UTC | 4.4mb | 133 km W of Abepura, Indonesia -2.388°, 139.448° | 27.8 km | - | - | - | ✓ Reviewed | USGS → |
On March 15, 2023 at 19:49 UTC, a magnitude 4.4 earthquake struck 133 km W of Abepura, Indonesia. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 19:49:36 UTC | 2.1ml | 3 km WSW of P?hala, Hawaii 19.189°, -155.512° | 33.7 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 3 km WSW of P?hala, Hawaii on March 15, 2023 at 19:49 UTC. It arrived roughly 9 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-15 2023-03-15 19:43:39 UTC | 2.6md | 15km NNE of Deep Springs, CA 37.500°, -117.951° | -0.9 km | 1 | - | - | ✓ Reviewed | USGS → |
March 15, 2023 brought a magnitude 2.6 earthquake 15km NNE of Deep Springs, CA, logged at 19:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 7 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. 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 March 15, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.