Earthquakes on February 28, 2026: 300 Worldwide, Largest M5.4

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2026-02-28 2026-02-28 23:48:00 UTC	4.4mb	129 km SSW of Kokopo, Papua New Guinea -5.425°, 151.822°	35.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.4 earthquake 129 km SSW of Kokopo, Papua New Guinea came in on February 28, 2026 at 23:48 UTC. Coming 17 hours after a magnitude 5.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of 35.0 km, the event was shallow crustal. Coordinates: -5.425°, 151.822°. 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.
2026-02-28 2026-02-28 23:40:03 UTC	2.1ml	75 km NE of Tonopah, Nevada 38.455°, -116.524°	8.3 km	-	-	-	✓ Reviewed	USGS →
On February 28, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 75 km NE of Tonopah, Nevada at 23:40 UTC. It arrived roughly 5 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. At a depth of 8.3 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 38.455°, -116.524°. 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.
2026-02-28 2026-02-28 23:31:09 UTC	2.1ml	5 km S of Fritz Creek, Alaska 59.683°, -151.302°	49.3 km	-	-	-	✓ Reviewed	USGS →
February 28, 2026 brought a magnitude 2.1 earthquake 5 km S of Fritz Creek, Alaska, logged at 23:31 UTC. At a depth of 49.3 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 59.683°, -151.302°. 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.
2026-02-28 2026-02-28 23:27:51 UTC	2.1ml	136 km SSE of McCarthy, Alaska 60.420°, -141.514°	0.9 km	-	-	-	✓ Reviewed	USGS →
On February 28, 2026 at 23:27 UTC, a magnitude 2.1 earthquake struck 136 km SSE of McCarthy, Alaska. At a depth of just 0.9 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The epicenter is at 60.420°, -141.514°. 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.
2026-02-28 2026-02-28 23:26:49 UTC	2.0ml	73 km NE of Tonopah, Nevada 38.451°, -116.548°	10.8 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.0 earthquake 73 km NE of Tonopah, Nevada came in on February 28, 2026 at 23:26 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 5 hours earlier. At a depth of 10.8 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 38.451°N, -116.548°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.
2026-02-28 2026-02-28 23:05:32 UTC	4.3mb	35 km NW of Albardón, Argentina -31.216°, -68.798°	125.7 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.3 earthquake 35 km NW of Albardón, Argentina at 23:05 UTC on February 28, 2026. At a depth of 125.7 km, the event was intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at -31.216°N, -68.798°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 23:01:31 UTC	2.0ml	23 km W of Garden City, Texas 31.896°, -101.729°	8.9 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 seismic event took place 23 km W of Garden City, Texas on February 28, 2026 at 23:01 UTC. The event originated approximately 8.9 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 31.896°, -101.729°. 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.
2026-02-28 2026-02-28 22:36:30 UTC	2.6ml	74 km NE of Tonopah, Nevada 38.452°, -116.540°	10.2 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.6 earthquake 74 km NE of Tonopah, Nevada at 22:36 UTC on February 28, 2026. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 4 hours earlier. This was a shallow crustal earthquake, focused at 10.2 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 38.452°N, -116.540°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.
2026-02-28 2026-02-28 22:06:06 UTC	2.6ml	39 km NNW of Valdez, Alaska 61.463°, -146.597°	14.3 km	1	-	-	✓ Reviewed	USGS →
This magnitude 2.6 event was detected 39 km NNW of Valdez, Alaska on February 28, 2026, with origin time 22:06 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. The hypocenter lay at 14.3 km, placing this in the shallow crustal category. Coordinates: 61.463°, -146.597°. 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.
2026-02-28 2026-02-28 21:52:48 UTC	2.0ml	30 km ENE of Susitna North, Alaska 62.224°, -149.277°	28.5 km	-	-	-	✓ Reviewed	USGS →
February 28, 2026 brought a magnitude 2.0 earthquake 30 km ENE of Susitna North, Alaska, logged at 21:52 UTC. This was a shallow crustal earthquake, focused at 28.5 km depth. The epicenter is at 62.224°, -149.277°. 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.
2026-02-28 2026-02-28 21:41:56 UTC	4.8mww	46 km NW of Hirara, Japan 25.134°, 125.022°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.8 seismic event took place 46 km NW of Hirara, Japan on February 28, 2026 at 21:41 UTC. Coming 16 hours after a magnitude 5.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 25.134°, 125.022°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 21:39:28 UTC	4.9mb	50 km NW of Hirara, Japan 25.161°, 124.995°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.9 earthquake 50 km NW of Hirara, Japan came in on February 28, 2026 at 21:39 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.3 earthquake that occurred about 16 hours earlier. This was a shallow crustal earthquake, focused at 10.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 25.161°N, 124.995°E. 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.
2026-02-28 2026-02-28 21:31:22 UTC	2.4ml	7 km ESE of Ratliff City, Oklahoma 34.412°, -97.439°	6.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.4 earthquake was recorded 7 km ESE of Ratliff City, Oklahoma on February 28, 2026 at 21:31 UTC. Coming 17 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This was a shallow crustal earthquake, focused at 6.2 km depth. Coordinates: 34.412°, -97.439°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 21:13:02 UTC	2.4ml	10 km SE of Tyonek, Alaska 60.996°, -151.004°	55.1 km	1	-	-	✓ Reviewed	USGS →
This magnitude 2.4 event was detected 10 km SE of Tyonek, Alaska on February 28, 2026, with origin time 21:13 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. The event originated approximately 55.1 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 60.996°, -151.004°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 21:07:38 UTC	3.0ml	72 km NE of Tonopah, Nevada 38.453°, -116.560°	10.5 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.0 earthquake 72 km NE of Tonopah, Nevada came in on February 28, 2026 at 21:07 UTC. Coming 3 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This was a shallow crustal earthquake, focused at 10.5 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 38.453°, -116.560°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 21:03:07 UTC	2.0ml	55 km SW of Cantwell, Alaska 63.109°, -149.869°	83.8 km	-	-	-	✓ Reviewed	USGS →
On February 28, 2026 at 21:03 UTC, a magnitude 2.0 earthquake struck 55 km SW of Cantwell, Alaska. The hypocenter lay at 83.8 km, placing this in the intermediate depth category. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at 63.109°N, -149.869°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.
2026-02-28 2026-02-28 20:55:46 UTC	2.2ml	23 km NE of Stevens Village, Alaska 66.132°, -148.686°	15.0 km	-	-	-	✓ Reviewed	USGS →
February 28, 2026 brought a magnitude 2.2 earthquake 23 km NE of Stevens Village, Alaska, logged at 20:55 UTC. This was a shallow crustal earthquake, focused at 15.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 66.132°N, -148.686°E. 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.
2026-02-28 2026-02-28 20:45:07 UTC	2.2ml	158 km ESE of McCarthy, Alaska 61.149°, -140.024°	1.4 km	-	-	-	✓ Reviewed	USGS →
On February 28, 2026 at 20:45 UTC, a magnitude 2.2 earthquake struck 158 km ESE of McCarthy, Alaska. Coming 2 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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: 61.149°, -140.024°. 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.
2026-02-28 2026-02-28 19:55:55 UTC	4.4mb	42 km E of Bhadarwāh, India 32.974°, 76.169°	10.0 km	1	-	-	✓ Reviewed	USGS →
A magnitude 4.4 seismic event took place 42 km E of Bhadarwāh, India on February 28, 2026 at 19:55 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. The event originated approximately 10.0 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 32.974°, 76.169°. 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.
2026-02-28 2026-02-28 19:41:06 UTC	2.0md	10 km S of Rio Dell, CA 40.413°, -124.093°	21.3 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.0 event was detected 10 km S of Rio Dell, CA on February 28, 2026, with origin time 19:41 UTC. The hypocenter lay at 21.3 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 40.413°, -124.093°. 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.
2026-02-28 2026-02-28 19:32:46 UTC	2.4ml	20 km NNE of Indio, CA 33.897°, -116.170°	4.3 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.4 earthquake 20 km NNE of Indio, CA with origin time 19:32 UTC on February 28, 2026. At a depth of just 4.3 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The epicenter is at 33.897°, -116.170°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 19:31:03 UTC	2.8ml	92 km SW of Nikolski, Alaska 52.335°, -169.810°	7.8 km	-	-	-	✓ Reviewed	USGS →
February 28, 2026 brought a magnitude 2.8 earthquake 92 km SW of Nikolski, Alaska, logged at 19:31 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 11 hours earlier. At a depth of 7.8 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 52.335°N, -169.810°E. 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.
2026-02-28 2026-02-28 19:06:46 UTC	2.5ml	157 km ESE of McCarthy, Alaska 61.156°, -140.037°	4.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.5 earthquake was recorded 157 km ESE of McCarthy, Alaska on February 28, 2026 at 19:06 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 1 hours earlier. At a depth of just 4.1 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Geolocation places the event at 61.156°N, -140.037°E. 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.
2026-02-28 2026-02-28 19:05:37 UTC	2.7ml	155 km E of McCarthy, Alaska 61.200°, -140.051°	3.8 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.7 earthquake 155 km E of McCarthy, Alaska with origin time 19:05 UTC on February 28, 2026. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 1 hours earlier. At a depth of just 3.8 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 61.200°N, -140.051°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.
2026-02-28 2026-02-28 19:03:06 UTC	3.4ml	157 km ESE of McCarthy, Alaska 61.169°, -140.037°	5.0 km	-	III	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 3.4 earthquake 157 km ESE of McCarthy, Alaska with origin time 19:03 UTC on February 28, 2026. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. Maximum shaking intensity peaked at MMI 3.9 (light). The event originated approximately 5.0 km below the surface, classifying it as shallow crustal. The epicenter is at 61.169°, -140.037°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-02-28 2026-02-28 18:41:33 UTC	2.5ml	65 km SE of Unalaska, Alaska 53.467°, -165.818°	30.6 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.5 earthquake 65 km SE of Unalaska, Alaska with origin time 18:41 UTC on February 28, 2026. The event originated approximately 30.6 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 53.467°, -165.818°. 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.
2026-02-28 2026-02-28 18:40:18 UTC	2.7md	74 km WNW of Petrolia, CA 40.455°, -125.143°	10.0 km	-	-	-	✓ Reviewed	USGS →
On February 28, 2026, worldwide seismic activity registered a magnitude 2.7 earthquake 74 km WNW of Petrolia, CA at 18:40 UTC. At a depth of 10.0 km, the event was shallow crustal. Coordinates: 40.455°, -125.143°. 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.
2026-02-28 2026-02-28 18:28:25 UTC	2.2ml	55 km E of Cantwell, Alaska 63.355°, -147.850°	70.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.2 earthquake was recorded 55 km E of Cantwell, Alaska on February 28, 2026 at 18:28 UTC. At a depth of 70.5 km, the event was intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. The epicenter is at 63.355°, -147.850°. 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.
2026-02-28 2026-02-28 18:17:19 UTC	3.3ml	75 km ENE of Tonopah, Nevada 38.444°, -116.519°	10.5 km	-	III	-	✓ Reviewed	USGS →
On February 28, 2026, worldwide seismic activity registered a magnitude 3.3 earthquake 75 km ENE of Tonopah, Nevada at 18:17 UTC. In the 72 hours after this event, the USGS recorded 10 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. On the Modified Mercalli scale, shaking reached 3.0 — considered light. This was a shallow crustal earthquake, focused at 10.5 km depth. Geolocation places the event at 38.444°N, -116.519°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.
2026-02-28 2026-02-28 18:14:14 UTC	3.1ml	74 km ENE of Tonopah, Nevada 38.441°, -116.524°	11.0 km	-	-	-	✓ Reviewed	USGS →
At 18:14 UTC on February 28, 2026, a magnitude 3.1 tremor occurred 74 km ENE of Tonopah, Nevada. In the 72 hours after this event, the USGS recorded 10 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. The hypocenter lay at 11.0 km, placing this in the shallow crustal category. Coordinates: 38.441°, -116.524°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.1 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 February 28, 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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