Earthquakes on July 20, 2021
364
EARTHQUAKES on July 20, 2021
24-hour UTC period · USGS data
10 km deep · 8 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
31
M3.0–3.9
8
M2.0–2.9
70
M1.0–1.9
252
Activity Summary
364
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.2
36 km NW of Rajanpur, Pakistan
23:54 UTC · 10.0 km deep
Felt by 8
5.2
Mindanao, Philippines
20:26 UTC · 87.7 km deep
05.1
228 km SE of Hihifo, Tonga
21:19 UTC · 10.0 km deep
4.8
200 km WNW of Panguna, Papua New Guinea
04:22 UTC · 35.0 km deep
4.7
south of the Kermadec Islands
14:41 UTC · 38.6 km deep
4.6
11 km ESE of Hukay, Philippines
10:07 UTC · 78.7 km deep
4.6
South Sandwich Islands region
02:46 UTC · 35.0 km deep
4.5
90 km W of Sola, Vanuatu
20:02 UTC · 51.2 km deep
Earthquake Map — July 20, 2021
All Earthquakes — July 20, 2021
Showing 30 of 112 (filtered from 364)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-07-20 2021-07-20 23:57:14 UTC | 3.9mb | 2 km SSE of Salitrillos, Costa Rica 9.832°, -84.082° | 8.9 km | 32 | - | - | ✓ Reviewed | USGS → |
At 23:57 UTC on July 20, 2021, a magnitude 3.9 tremor occurred 2 km SSE of Salitrillos, Costa Rica. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 23:54:26 UTC | 5.2mww | 36 km NW of Rajanpur, Pakistan 29.326°, 70.049° | 10.0 km | 8 | - | - | ✓ Reviewed | USGS → |
On July 20, 2021 at 23:54 UTC, a magnitude 5.2 earthquake struck 36 km NW of Rajanpur, Pakistan. It is the largest earthquake currently listed for worldwide seismic activity on July 20, 2021. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 23:50:02 UTC | 2.2ml | 28 km SSE of Mina, Nevada 38.142°, -118.029° | 3.8 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 28 km SSE of Mina, Nevada at 23:50 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. | ||||||||
2021-07-20 2021-07-20 23:18:01 UTC | 2.6md | 1 km SW of Guayanilla, Puerto Rico 18.011°, -66.797° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 1 km SW of Guayanilla, Puerto Rico with origin time 23:18 UTC on July 20, 2021. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 23:16:39 UTC | 4.2mb | 168 km SSE of Ormara, Pakistan 23.812°, 65.303° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2021, worldwide seismic activity registered a magnitude 4.2 earthquake 168 km SSE of Ormara, Pakistan at 23:16 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 23:16:29 UTC | 2.1md | 30km SE of Markleeville, CA 38.529°, -119.525° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2021 at 23:16 UTC, a magnitude 2.1 earthquake struck 30km SE of Markleeville, CA. It arrived roughly 6 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. | ||||||||
2021-07-20 2021-07-20 23:12:22 UTC | 2.1md | 30km SE of Markleeville, CA 38.513°, -119.537° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 30km SE of Markleeville, CA on July 20, 2021 at 23:12 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 6 hours earlier. 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. | ||||||||
2021-07-20 2021-07-20 23:01:43 UTC | 2.0md | 5 km S of P?hala, Hawaii 19.157°, -155.478° | 35.1 km | - | - | - | Auto | USGS → |
This magnitude 2.0 event was detected 5 km S of P?hala, Hawaii on July 20, 2021, with origin time 23:01 UTC. It arrived roughly 14 hours after a larger magnitude 2.7 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. | ||||||||
2021-07-20 2021-07-20 22:44:57 UTC | 2.0md | 5 km ENE of P?hala, Hawaii 19.215°, -155.432° | 31.8 km | 1 | - | - | Auto | USGS → |
Reports of a magnitude 2.0 earthquake 5 km ENE of P?hala, Hawaii came in on July 20, 2021 at 22:44 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 14 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 22:10:16 UTC | 4.4mb | South Sandwich Islands region -55.934°, -27.523° | 96.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded in the South Sandwich Islands region on July 20, 2021 at 22:10 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:40:55 UTC | 2.1md | 10 km E of P?hala, Hawaii 19.196°, -155.375° | 31.2 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 10 km E of P?hala, Hawaii with origin time 21:40 UTC on July 20, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 13 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:35:50 UTC | 2.1md | 32km SSW of Smith Valley, NV 38.514°, -119.467° | 0.5 km | 3 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 32km SSW of Smith Valley, NV on July 20, 2021 at 21:35 UTC. It arrived roughly 4 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. | ||||||||
2021-07-20 2021-07-20 21:35:43 UTC | 3.0md | 6 km WSW of La Parguera, Puerto Rico 17.958°, -67.105° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2021 at 21:35 UTC, a magnitude 3.0 earthquake struck 6 km WSW of La Parguera, Puerto Rico. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:30:40 UTC | 4.3mb | Fiji region -19.611°, -177.628° | 566.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake in the Fiji region at 21:30 UTC on July 20, 2021. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:19:51 UTC | 5.1mb | 228 km SE of Hihifo, Tonga -17.331°, -172.198° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake 228 km SE of Hihifo, Tonga with origin time 21:19 UTC on July 20, 2021. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:19:43 UTC | 2.0ml | 7 km NNW of Point MacKenzie, Alaska 61.423°, -150.043° | 40.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 7 km NNW of Point MacKenzie, Alaska on July 20, 2021 at 21:19 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 21:05:10 UTC | 3.2ml | 75 km E of Atka, Alaska 52.071°, -173.119° | 116.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.2 event was detected 75 km E of Atka, Alaska on July 20, 2021, with origin time 21:05 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 20:50:24 UTC | 2.5ml | 56 km WNW of Valdez, Alaska 61.286°, -147.352° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 56 km WNW of Valdez, Alaska came in on July 20, 2021 at 20:50 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 20:50:02 UTC | 4.0mb | 26 km ESE of Wright, Wyoming 43.622°, -105.210° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.0 earthquake 26 km ESE of Wright, Wyoming with origin time 20:50 UTC on July 20, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 20:26:46 UTC | 5.2mww | Mindanao, Philippines 5.610°, 126.738° | 87.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.2 earthquake was recorded near Mindanao, Philippines on July 20, 2021 at 20:26 UTC. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 20:17:16 UTC | 2.1md | 4 km S of P?hala, Hawaii 19.167°, -155.473° | 32.3 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 4 km S of P?hala, Hawaii with origin time 20:17 UTC on July 20, 2021. Coming 12 hours after a magnitude 2.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 20:02:50 UTC | 4.5mb | 90 km W of Sola, Vanuatu -13.961°, 166.720° | 51.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 90 km W of Sola, Vanuatu came in on July 20, 2021 at 20:02 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:50:28 UTC | 2.1md | 33km SE of Markleeville, CA 38.501°, -119.507° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 33km SE of Markleeville, CA at 19:50 UTC on July 20, 2021. Coming 2 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:42:59 UTC | 2.6ml | northern Alaska 65.412°, -153.349° | 9.2 km | - | - | - | ✓ Reviewed | USGS → |
On July 20, 2021, worldwide seismic activity registered a magnitude 2.6 earthquake near northern Alaska at 19:42 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:25:11 UTC | 2.2ml | 6 km E of P?hala, Hawaii 19.205°, -155.421° | 34.9 km | 1 | - | - | Auto | USGS → |
A magnitude 2.2 earthquake was recorded 6 km E of P?hala, Hawaii on July 20, 2021 at 19:25 UTC. Coming 11 hours after a magnitude 2.7 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. | ||||||||
2021-07-20 2021-07-20 19:19:12 UTC | 2.1ml | 9 km SE of P?hala, Hawaii 19.139°, -155.422° | 32.5 km | - | - | - | Auto | USGS → |
July 20, 2021 brought a magnitude 2.1 earthquake 9 km SE of P?hala, Hawaii, logged at 19:19 UTC. Coming 11 hours after a magnitude 2.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:16:56 UTC | 2.2ml | 7km NNE of Westmorland, CA 33.098°, -115.602° | 9.5 km | - | - | - | ✓ Reviewed | USGS → |
At 19:16 UTC on July 20, 2021, a magnitude 2.2 tremor occurred 7km NNE of Westmorland, CA. Coming 5 hours after a magnitude 2.7 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. | ||||||||
2021-07-20 2021-07-20 19:04:18 UTC | 4.3mb | 168 km WNW of Tobelo, Indonesia 2.388°, 126.648° | 59.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 168 km WNW of Tobelo, Indonesia on July 20, 2021, with origin time 19:04 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:01:40 UTC | 2.2ml | 43 km S of Chignik, Alaska 55.910°, -158.315° | 48.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 43 km S of Chignik, Alaska at 19:01 UTC on July 20, 2021. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-20 2021-07-20 19:01:19 UTC | 4.3mb | 62 km WNW of Zhaotong, China 27.543°, 103.133° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 62 km WNW of Zhaotong, China came in on July 20, 2021 at 19:01 UTC. See the M4.3 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 July 20, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.