Earthquakes on July 16, 2021
500
EARTHQUAKES on July 16, 2021
24-hour UTC period · USGS data
LARGEST: M5.4 — 152 km NE of Neiafu, Tonga
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
20
M3.0–3.9
9
M2.0–2.9
94
M1.0–1.9
373
Activity Summary
500
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
152 km NE of Neiafu, Tonga
10:01 UTC · 10.0 km deep
5.2
Kermadec Islands region
15:56 UTC · 10.0 km deep
5.0
east of the Philippine Islands
23:29 UTC · 10.0 km deep
5.0
47 km SE of Madang, Papua New Guinea
09:34 UTC · 50.8 km deep
4.9
82 km W of Alianza Cristiana, Peru
20:42 UTC · 10.0 km deep
Felt by 6
4.6
210 km SSE of Burica, Panama
07:37 UTC · 10.0 km deep
Felt by 1
4.5
43 km N of Jiangyou, China
07:59 UTC · 10.0 km deep
Earthquake Map — July 16, 2021
All Earthquakes — July 16, 2021
Showing 30 of 127 (filtered from 500)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-07-16 2021-07-16 23:29:19 UTC | 5.0mww | east of the Philippine Islands 14.151°, 128.166° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake east of the Philippine Islands with origin time 23:29 UTC on July 16, 2021. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 23:28:16 UTC | 2.2md | 27km ESE of Markleeville, CA 38.559°, -119.534° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 27km ESE of Markleeville, CA with origin time 23:28 UTC on July 16, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 4 hours earlier. 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. | ||||||||
2021-07-16 2021-07-16 23:25:41 UTC | 2.6md | 30km SE of Markleeville, CA 38.500°, -119.543° | 3.3 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 30km SE of Markleeville, CA with origin time 23:25 UTC on July 16, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 4 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. | ||||||||
2021-07-16 2021-07-16 23:23:10 UTC | 2.4ml | 8 km E of P?hala, Hawaii 19.205°, -155.397° | 30.4 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.4 earthquake 8 km E of P?hala, Hawaii came in on July 16, 2021 at 23:23 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:52:19 UTC | 4.4mb | 67 km S of Kushiro, Japan 42.366°, 144.303° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 67 km S of Kushiro, Japan came in on July 16, 2021 at 22:52 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:20:12 UTC | 2.2ml | 8 km E of P?hala, Hawaii 19.211°, -155.397° | 31.5 km | - | - | - | Auto | USGS → |
A magnitude 2.2 earthquake was recorded 8 km E of P?hala, Hawaii on July 16, 2021 at 22:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.3 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:17:55 UTC | 2.1ml | 6 km NNE of Point MacKenzie, Alaska 61.420°, -149.943° | 33.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 6 km NNE of Point MacKenzie, Alaska on July 16, 2021 at 22:17 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:17:06 UTC | 2.1md | 6 km E of P?hala, Hawaii 19.204°, -155.414° | 35.2 km | - | - | - | Auto | USGS → |
On July 16, 2021 at 22:17 UTC, a magnitude 2.1 earthquake struck 6 km E of P?hala, Hawaii. Coming 1 hours after a magnitude 2.3 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. | ||||||||
2021-07-16 2021-07-16 22:12:55 UTC | 2.2md | 30km SSW of Smith Valley, NV 38.536°, -119.469° | -0.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 30km SSW of Smith Valley, NV with origin time 22:12 UTC on July 16, 2021. Coming 3 hours after a magnitude 2.9 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:04:46 UTC | 2.3ml | 5 km ENE of P?hala, Hawaii 19.218°, -155.425° | 34.4 km | - | - | - | Auto | USGS → |
July 16, 2021 brought a magnitude 2.3 earthquake 5 km ENE of P?hala, Hawaii, logged at 22:04 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:03:57 UTC | 2.2md | 11 km SW of Leilani Estates, Hawaii 19.405°, -155.001° | 42.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 11 km SW of Leilani Estates, Hawaii on July 16, 2021 at 22:03 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 22:01:51 UTC | 2.2ml | 6 km ENE of P?hala, Hawaii 19.217°, -155.419° | 33.0 km | - | - | - | Auto | USGS → |
On July 16, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 6 km ENE of P?hala, Hawaii at 22:01 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 21:35:14 UTC | 2.6ml | 257 km ESE of Chiniak, Alaska 56.440°, -148.620° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 257 km ESE of Chiniak, Alaska came in on July 16, 2021 at 21:35 UTC. Coming 2 hours after a magnitude 4.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 21:15:24 UTC | 3.9md | 33 km S of Boca de Yuma, Dominican Republic 18.073°, -68.628° | 134.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.9 event was detected 33 km S of Boca de Yuma, Dominican Republic on July 16, 2021, with origin time 21:15 UTC. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 21:05:36 UTC | 2.3ml | 65 km SSW of Whites City, New Mexico 31.599°, -104.518° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 65 km SSW of Whites City, New Mexico on July 16, 2021 at 21:05 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 21:00:09 UTC | 2.2md | 28km SSW of Smith Valley, NV 38.547°, -119.433° | -0.5 km | - | - | - | ✓ Reviewed | USGS → |
On July 16, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 28km SSW of Smith Valley, NV at 21:00 UTC. Coming 2 hours after a magnitude 2.9 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:50:41 UTC | 2.6ml | 48 km N of Sutton-Alpine, Alaska 62.204°, -148.925° | 36.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 48 km N of Sutton-Alpine, Alaska on July 16, 2021 at 20:50 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:44:06 UTC | 3.1ml | 250 km ESE of Chiniak, Alaska 56.554°, -148.629° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 16, 2021 at 20:44 UTC, a magnitude 3.1 earthquake struck 250 km ESE of Chiniak, Alaska. It arrived roughly 1 hours after a larger magnitude 4.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:42:49 UTC | 4.9mww | 82 km W of Alianza Cristiana, Peru -3.553°, -77.177° | 10.0 km | 6 | - | - | ✓ Reviewed | USGS → |
At 20:42 UTC on July 16, 2021, a magnitude 4.9 tremor occurred 82 km W of Alianza Cristiana, Peru. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:31:17 UTC | 2.0md | 30km SE of Markleeville, CA 38.502°, -119.542° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 30km SE of Markleeville, CA on July 16, 2021 at 20:31 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:28:32 UTC | 2.6md | 31km SE of Markleeville, CA 38.498°, -119.542° | 3.7 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 31km SE of Markleeville, CA on July 16, 2021, with origin time 20:28 UTC. 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. | ||||||||
2021-07-16 2021-07-16 20:23:26 UTC | 2.0ml | 63 km SSE of Mammoth, Wyoming 44.461°, -110.355° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 63 km SSE of Mammoth, Wyoming with origin time 20:23 UTC on July 16, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 1 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:12:39 UTC | 2.3ml | 246 km ESE of Chiniak, Alaska 56.577°, -148.685° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 246 km ESE of Chiniak, Alaska with origin time 20:12 UTC on July 16, 2021. It arrived roughly 1 hours after a larger magnitude 4.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:09:13 UTC | 3.0ml | 36 km SE of Mina, Nevada 38.177°, -117.798° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 36 km SE of Mina, Nevada with origin time 20:09 UTC on July 16, 2021. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:08:34 UTC | 2.3md | 29km SE of Markleeville, CA 38.526°, -119.535° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 29km SE of Markleeville, CA at 20:08 UTC on July 16, 2021. 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:07:26 UTC | 2.0ml | 63 km ESE of West Yellowstone, Montana 44.456°, -110.355° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 63 km ESE of West Yellowstone, Montana on July 16, 2021 at 20:07 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 1 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 20:01:34 UTC | 4.0mb | 250 km ESE of Chiniak, Alaska 56.498°, -148.689° | 17.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 earthquake was recorded 250 km ESE of Chiniak, Alaska on July 16, 2021 at 20:01 UTC. 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 M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 19:56:09 UTC | 4.3mb | 3 km N of Rasht, Tajikistan 39.057°, 70.377° | 29.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 3 km N of Rasht, Tajikistan with origin time 19:56 UTC on July 16, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 19:48:21 UTC | 2.0ml | 63 km ESE of West Yellowstone, Montana 44.462°, -110.361° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 63 km ESE of West Yellowstone, Montana at 19:48 UTC on July 16, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.2 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-16 2021-07-16 19:47:09 UTC | 2.6ml | 42 km WNW of Nanwalek, Alaska 59.472°, -152.635° | 74.3 km | - | - | - | ✓ Reviewed | USGS → |
July 16, 2021 brought a magnitude 2.6 earthquake 42 km WNW of Nanwalek, Alaska, logged at 19:47 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 13 hours earlier. 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 July 16, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.