Earthquakes on June 28, 2021
391
EARTHQUAKES on June 28, 2021
24-hour UTC period · USGS data
LARGEST: M5.4 — southern East Pacific Rise
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
32
M3.0–3.9
7
M2.0–2.9
83
M1.0–1.9
265
Activity Summary
391
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.4
southern East Pacific Rise
04:21 UTC · 10.0 km deep
5.1
Bonin Islands, Japan region
09:12 UTC · 13.7 km deep
5.0
southern Mid-Atlantic Ridge
18:09 UTC · 10.0 km deep
5.0
54 km SE of Kupang, Indonesia
01:56 UTC · 10.0 km deep
Felt by 1
4.9
northern Mid-Atlantic Ridge
05:45 UTC · 10.0 km deep
4.8
47 km E of Luganville, Vanuatu
14:00 UTC · 96.4 km deep
4.8
60 km ENE of Leh, India
00:40 UTC · 10.0 km deep
4.7
central Mid-Atlantic Ridge
11:00 UTC · 10.0 km deep
Earthquake Map — June 28, 2021
All Earthquakes — June 28, 2021
Showing 30 of 126 (filtered from 391)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-06-28 2021-06-28 23:47:15 UTC | 2.4ml | 32 km NNW of Toyah, Texas 31.586°, -103.919° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 32 km NNW of Toyah, Texas on June 28, 2021 at 23:47 UTC. It arrived roughly 1 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:42:25 UTC | 2.1ml | 32 km NNW of Toyah, Texas 31.585°, -103.918° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021 at 23:42 UTC, a magnitude 2.1 earthquake struck 32 km NNW of Toyah, Texas. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 1 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:33:10 UTC | 4.0mb | Fiji region -18.985°, -177.851° | 446.1 km | - | - | - | ✓ Reviewed | USGS → |
At 23:33 UTC on June 28, 2021, a magnitude 4.0 tremor occurred in the Fiji region. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:23:49 UTC | 2.5ml | 32 km NNW of Toyah, Texas 31.585°, -103.912° | 8.5 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021, worldwide seismic activity registered a magnitude 2.5 earthquake 32 km NNW of Toyah, Texas at 23:23 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:22:14 UTC | 2.7ml | 49 km E of Juneau, Alaska 58.379°, -133.585° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 49 km E of Juneau, Alaska came in on June 28, 2021 at 23:22 UTC. It arrived roughly 1 hours after a larger magnitude 2.9 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. | ||||||||
2021-06-28 2021-06-28 23:22:00 UTC | 2.6ml | 54 km ENE of Juneau, Alaska 58.469°, -133.551° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:22 UTC on June 28, 2021, a magnitude 2.6 tremor occurred 54 km ENE of Juneau, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.9 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 M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:12:26 UTC | 2.9ml | 58 km E of Juneau, Alaska 58.351°, -133.433° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:12 UTC on June 28, 2021, a magnitude 2.9 tremor occurred 58 km E of Juneau, Alaska. 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. | ||||||||
2021-06-28 2021-06-28 23:06:45 UTC | 2.2ml | 31 km NNW of Toyah, Texas 31.576°, -103.912° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 31 km NNW of Toyah, Texas on June 28, 2021 at 23:06 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 13 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:02:03 UTC | 2.2ml | 4 km S of P?hala, Hawaii 19.159°, -155.476° | 34.0 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.2 earthquake 4 km S of P?hala, Hawaii at 23:02 UTC on June 28, 2021. Coming 5 hours after a magnitude 2.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 23:01:34 UTC | 2.2ml | 32 km WSW of Mentone, Texas 31.592°, -103.914° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 32 km WSW of Mentone, Texas with origin time 23:01 UTC on June 28, 2021. Coming 13 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 22:58:19 UTC | 2.9ml | 0 km NNW of Palagonia, Italy 37.333°, 14.743° | 23.8 km | 3 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 0 km NNW of Palagonia, Italy at 22:58 UTC on June 28, 2021. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 22:41:29 UTC | 4.1mb | 29 km NW of Dali, China 25.775°, 100.007° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
June 28, 2021 brought a magnitude 4.1 earthquake 29 km NW of Dali, China, logged at 22:41 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 22:07:14 UTC | 2.1ml | 69 km ENE of Pedro Bay, Alaska 60.101°, -153.038° | 121.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 69 km ENE of Pedro Bay, Alaska on June 28, 2021 at 22:07 UTC. Coming 7 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:55:30 UTC | 3.3ml | 21 km N of Wright, Wyoming 43.944°, -105.537° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place 21 km N of Wright, Wyoming on June 28, 2021 at 21:55 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:49:43 UTC | 2.1ml | 12km NNW of Piru, CA 34.519°, -118.829° | 13.4 km | - | - | - | ✓ Reviewed | USGS → |
June 28, 2021 brought a magnitude 2.1 earthquake 12km NNW of Piru, CA, logged at 21:49 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:40:05 UTC | 2.2md | 2km ENE of Pinnacles, CA 36.537°, -121.121° | 3.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 2km ENE of Pinnacles, CA on June 28, 2021 at 21:40 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:37:33 UTC | 4.1mb | 168 km SE of Tondano, Indonesia 0.065°, 125.784° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021 at 21:37 UTC, a magnitude 4.1 earthquake struck 168 km SE of Tondano, Indonesia. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:29:28 UTC | 3.5md | 5 km WSW of La Parguera, Puerto Rico 17.955°, -67.091° | 12.0 km | 1 | II | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.5 earthquake 5 km WSW of La Parguera, Puerto Rico came in on June 28, 2021 at 21:29 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:20:12 UTC | 2.6md | 6 km SW of La Parguera, Puerto Rico 17.940°, -67.094° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021 at 21:20 UTC, a magnitude 2.6 earthquake struck 6 km SW of La Parguera, Puerto Rico. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 16 hours earlier. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 21:05:01 UTC | 2.2ml | 56 km E of Juneau, Alaska 58.356°, -133.468° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 56 km E of Juneau, Alaska at 21:05 UTC. It arrived roughly 10 hours after a larger magnitude 2.9 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 20:59:05 UTC | 4.4mb | south of the Fiji Islands -23.896°, -179.792° | 494.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake south of the Fiji Islands at 20:59 UTC on June 28, 2021. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 20:54:34 UTC | 3.2ml | 52 km WNW of Aleneva, Alaska 58.224°, -153.746° | 77.6 km | - | - | - | ✓ Reviewed | USGS → |
On June 28, 2021 at 20:54 UTC, a magnitude 3.2 earthquake struck 52 km WNW of Aleneva, Alaska. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 20:20:33 UTC | 2.0ml | 58 km E of Juneau, Alaska 58.348°, -133.422° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 58 km E of Juneau, Alaska came in on June 28, 2021 at 20:20 UTC. It arrived roughly 9 hours after a larger magnitude 2.9 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 20:20:21 UTC | 2.5ml | 236 km S of Sand Point, Alaska 53.225°, -160.161° | 29.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:20 UTC on June 28, 2021, a magnitude 2.5 tremor occurred 236 km S of Sand Point, Alaska. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 20:03:04 UTC | 4.2mb | 160 km NNE of Palu, Indonesia 0.454°, 120.358° | 57.4 km | - | - | - | ✓ Reviewed | USGS → |
At 20:03 UTC on June 28, 2021, a magnitude 4.2 tremor occurred 160 km NNE of Palu, Indonesia. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 19:47:01 UTC | 2.7ml | 30 km SW of Birney, Montana 45.144°, -106.817° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 30 km SW of Birney, Montana on June 28, 2021 at 19:47 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. | ||||||||
2021-06-28 2021-06-28 19:43:12 UTC | 2.2ml | 34 km NW of Stanley, Idaho 44.453°, -115.220° | 11.5 km | - | - | - | ✓ Reviewed | USGS → |
June 28, 2021 brought a magnitude 2.2 earthquake 34 km NW of Stanley, Idaho, logged at 19:43 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 19:20:03 UTC | 2.7ml | Rat Islands, Aleutian Islands, Alaska 51.357°, 176.847° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
June 28, 2021 brought a magnitude 2.7 earthquake near Rat Islands, Aleutian Islands, Alaska, logged at 19:20 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 19:10:06 UTC | 2.8md | 8 km WSW of La Parguera, Puerto Rico 17.942°, -67.115° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 8 km WSW of La Parguera, Puerto Rico on June 28, 2021 at 19:10 UTC. It arrived roughly 14 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-28 2021-06-28 18:45:17 UTC | 2.5md | 9 km SSE of Guánica, Puerto Rico 17.889°, -66.875° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 9 km SSE of Guánica, Puerto Rico came in on June 28, 2021 at 18:45 UTC. Coming 16 hours after a magnitude 2.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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 June 28, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.