Earthquakes on June 21, 2021
310
EARTHQUAKES on June 21, 2021
24-hour UTC period · USGS data
LARGEST: M5.9 — Kermadec Islands, New Zealand
32 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
43
M3.0–3.9
9
M2.0–2.9
44
M1.0–1.9
208
Activity Summary
310
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.9
Kermadec Islands, New Zealand
11:14 UTC · 32.4 km deep
5.5
20 km SSW of Mandráki, Greece
22:14 UTC · 9.0 km deep
Felt by 15
5.5
Pagan region, Northern Mariana Islands
01:44 UTC · 223.6 km deep
5.2
southern East Pacific Rise
15:15 UTC · 10.0 km deep
5.1
off the west coast of northern Sumatra
01:25 UTC · 10.0 km deep
5.0
South Atlantic Ocean
05:19 UTC · 10.0 km deep
4.8
Kermadec Islands, New Zealand
18:25 UTC · 10.0 km deep
4.8
central East Pacific Rise
13:43 UTC · 10.0 km deep
Earthquake Map — June 21, 2021
All Earthquakes — June 21, 2021
Showing 30 of 102 (filtered from 310)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-06-21 2021-06-21 23:43:14 UTC | 2.7md | 4 km SSE of La Parguera, Puerto Rico 17.937°, -67.022° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2021 at 23:43 UTC, a magnitude 2.7 earthquake struck 4 km SSE of La Parguera, Puerto Rico. It arrived roughly 8 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 23:32:20 UTC | 4.2mb | 81 km WNW of Abra Pampa, Argentina -22.533°, -66.459° | 263.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 81 km WNW of Abra Pampa, Argentina on June 21, 2021 at 23:32 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 23:26:26 UTC | 3.0md | 6 km SSE of La Parguera, Puerto Rico 17.920°, -67.016° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 6 km SSE of La Parguera, Puerto Rico on June 21, 2021, with origin time 23:26 UTC. Coming 8 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 23:25:31 UTC | 2.4ml | 8 km NNE of Quinlan, Oklahoma 36.522°, -99.000° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 8 km NNE of Quinlan, Oklahoma on June 21, 2021 at 23:25 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 23:22:55 UTC | 4.7mb | 118 km WSW of Ternate, Indonesia 0.401°, 126.390° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place 118 km WSW of Ternate, Indonesia on June 21, 2021 at 23:22 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 23:06:32 UTC | 3.0md | Puerto Rico region 17.923°, -67.025° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake in the Puerto Rico region came in on June 21, 2021 at 23:06 UTC. It arrived roughly 7 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 22:31:50 UTC | 2.3md | 3 km SSE of P?hala, Hawaii 19.174°, -155.461° | 34.6 km | - | - | - | Auto | USGS → |
On June 21, 2021 at 22:31 UTC, a magnitude 2.3 earthquake struck 3 km SSE of P?hala, Hawaii. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 22:21:06 UTC | 4.3mb | 38 km S of Mandráki, Greece 36.271°, 27.084° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:21 UTC on June 21, 2021, a magnitude 4.3 tremor occurred 38 km S of Mandráki, Greece. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 1 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 22:14:13 UTC | 5.5mww | 20 km SSW of Mandráki, Greece 36.439°, 27.042° | 9.0 km | 15 | IV | green | ✓ Reviewed | USGS → |
A magnitude 5.5 earthquake was recorded 20 km SSW of Mandráki, Greece on June 21, 2021 at 22:14 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 21:07:59 UTC | 2.2ml | 11 km NE of Hermleigh, Texas 32.715°, -100.682° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 11 km NE of Hermleigh, Texas at 21:07 UTC on June 21, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 20:55:26 UTC | 4.5mb | 198 km W of Naze, Japan 28.366°, 127.457° | 239.5 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2021 at 20:55 UTC, a magnitude 4.5 earthquake struck 198 km W of Naze, Japan. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 20:36:18 UTC | 2.2ml | 4km NW of Muscoy, CA 34.187°, -117.372° | 12.3 km | 2 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 4km NW of Muscoy, CA with origin time 20:36 UTC on June 21, 2021. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 19:56:48 UTC | 3.4ml | 12 km ESE of Wright, Wyoming 43.717°, -105.339° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2021 at 19:56 UTC, a magnitude 3.4 earthquake struck 12 km ESE of Wright, Wyoming. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 19:55:30 UTC | 2.0ml | 18 km WSW of Woodruff, Utah 41.475°, -111.377° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2021 brought a magnitude 2.0 earthquake 18 km WSW of Woodruff, Utah, logged at 19:55 UTC. 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. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 19:54:32 UTC | 2.4ml | 19 km WSW of Woodruff, Utah 41.482°, -111.391° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2021 brought a magnitude 2.4 earthquake 19 km WSW of Woodruff, Utah, logged at 19:54 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 19:51:11 UTC | 2.4ml | 18 km WSW of Woodruff, Utah 41.483°, -111.384° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 18 km WSW of Woodruff, Utah with origin time 19:51 UTC on June 21, 2021. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 19:17:20 UTC | 4.5mb | Kermadec Islands, New Zealand -29.572°, -177.613° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded near Kermadec Islands, New Zealand on June 21, 2021 at 19:17 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:55:58 UTC | 4.2mb | 79 km SE of Pondaguitan, Philippines 5.803°, 126.627° | 63.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 79 km SE of Pondaguitan, Philippines with origin time 18:55 UTC on June 21, 2021. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:52:52 UTC | 2.2ml | 28 km ESE of West Yellowstone, Montana 44.602°, -110.759° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
At 18:52 UTC on June 21, 2021, a magnitude 2.2 tremor occurred 28 km ESE of West Yellowstone, Montana. It arrived roughly 2 hours after a larger magnitude 2.5 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. | ||||||||
2021-06-21 2021-06-21 18:25:51 UTC | 4.8mb | Kermadec Islands, New Zealand -30.300°, -177.339° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected near Kermadec Islands, New Zealand on June 21, 2021, with origin time 18:25 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:22:33 UTC | 4.5mb | Kermadec Islands, New Zealand -29.623°, -177.931° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake near Kermadec Islands, New Zealand with origin time 18:22 UTC on June 21, 2021. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:16:37 UTC | 4.4mb | southeast of the Loyalty Islands -23.121°, 171.588° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2021 brought a magnitude 4.4 earthquake southeast of the Loyalty Islands, logged at 18:16 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:11:07 UTC | 4.6mb | south of Africa -48.377°, 30.637° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded south of Africa on June 21, 2021 at 18:11 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 18:06:12 UTC | 2.1ml | 28 km ESE of West Yellowstone, Montana 44.593°, -110.756° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
On June 21, 2021 at 18:06 UTC, a magnitude 2.1 earthquake struck 28 km ESE of West Yellowstone, Montana. 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 17:59:18 UTC | 2.1ml | 28 km ESE of West Yellowstone, Montana 44.596°, -110.763° | 5.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 28 km ESE of West Yellowstone, Montana at 17:59 UTC on June 21, 2021. Coming 1 hours after a magnitude 2.5 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. | ||||||||
2021-06-21 2021-06-21 17:32:18 UTC | 4.7mb | 139 km ESE of Hihifo, Tonga -16.568°, -172.651° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2021 brought a magnitude 4.7 earthquake 139 km ESE of Hihifo, Tonga, logged at 17:32 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 17:27:51 UTC | 2.4ml | 27 km ESE of West Yellowstone, Montana 44.596°, -110.766° | 7.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 27 km ESE of West Yellowstone, Montana on June 21, 2021, with origin time 17:27 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 1 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 17:26:27 UTC | 2.2md | 1 km SSE of P?hala, Hawaii 19.191°, -155.474° | 31.1 km | - | - | - | Auto | USGS → |
On June 21, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 1 km SSE of P?hala, Hawaii at 17:26 UTC. Coming 16 hours after a magnitude 2.2 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. | ||||||||
2021-06-21 2021-06-21 17:21:05 UTC | 2.7ml | 88 km SSW of Sand Point, Alaska 54.624°, -161.122° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
June 21, 2021 brought a magnitude 2.7 earthquake 88 km SSW of Sand Point, Alaska, logged at 17:21 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-06-21 2021-06-21 17:20:10 UTC | 2.5ml | 27 km ESE of West Yellowstone, Montana 44.599°, -110.764° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 27 km ESE of West Yellowstone, Montana came in on June 21, 2021 at 17:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 1 hours earlier. 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 21, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.