Earthquakes on July 18, 2021
469
EARTHQUAKES on July 18, 2021
24-hour UTC period · USGS data
LARGEST: M5.4 — 49 km N of Bor?zj?n, Iran
9 km deep · 10 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
46
M3.0–3.9
13
M2.0–2.9
92
M1.0–1.9
312
Activity Summary
469
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
49 km N of Bor?zj?n, Iran
14:34 UTC · 9.0 km deep
Felt by 10
5.4
122 km WNW of Pangai, Tonga
00:36 UTC · 215.5 km deep
5.2
southeast of the Loyalty Islands
01:04 UTC · 10.0 km deep
5.1
12km W of Petrolia, CA
06:46 UTC · 30.9 km deep
Felt by 751
5.1
12 km E of Nangan, Philippines
00:09 UTC · 70.9 km deep
Felt by 3
5.0
Pitcairn Islands region
15:48 UTC · 10.0 km deep
Felt by 2
4.9
199 km SW of Lorengau, Papua New Guinea
09:35 UTC · 10.0 km deep
4.9
182 km SW of Bandar Lampung, Indonesia
02:25 UTC · 46.2 km deep
Earthquake Map — July 18, 2021
All Earthquakes — July 18, 2021
Showing 30 of 157 (filtered from 469)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-07-18 2021-07-18 23:59:20 UTC | 4.5mb | south of the Fiji Islands -23.904°, -179.733° | 476.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place south of the Fiji Islands on July 18, 2021 at 23:59 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:52:01 UTC | 2.1ml | 6 km SE of Akutan, Alaska 54.097°, -165.693° | 114.3 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021 at 23:52 UTC, a magnitude 2.1 earthquake struck 6 km SE of Akutan, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:43:18 UTC | 3.0md | 5 km WSW of La Parguera, Puerto Rico 17.959°, -67.096° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 5 km WSW of La Parguera, Puerto Rico at 23:43 UTC on July 18, 2021. Coming 20 hours after a magnitude 4.5 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. | ||||||||
2021-07-18 2021-07-18 23:35:27 UTC | 2.5md | 7 km SE of Maria Antonia, Puerto Rico 17.925°, -66.852° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021, worldwide seismic activity registered a magnitude 2.5 earthquake 7 km SE of Maria Antonia, Puerto Rico at 23:35 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. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:29:22 UTC | 2.9md | 5 km SE of Maria Antonia, Puerto Rico 17.938°, -66.853° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 5 km SE of Maria Antonia, Puerto Rico on July 18, 2021, with origin time 23:29 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. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:16:57 UTC | 2.5ml | 23 km SE of Virginia City, Montana 45.127°, -111.768° | 8.1 km | 2 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 23 km SE of Virginia City, Montana at 23:16 UTC on July 18, 2021. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:12:20 UTC | 2.0ml | 45 km ENE of Pedro Bay, Alaska 59.923°, -153.339° | 126.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 45 km ENE of Pedro Bay, Alaska on July 18, 2021 at 23:12 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 23:11:45 UTC | 3.6md | 97 km N of Charlotte Amalie, U.S. Virgin Islands 19.223°, -65.026° | 89.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 23:11 UTC on July 18, 2021, a magnitude 3.6 tremor occurred 97 km N of Charlotte Amalie, U.S. Virgin Islands. The event was offshore. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 22:44:59 UTC | 2.0ml | 73 km SE of Akutan, Alaska 53.735°, -164.879° | 57.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 73 km SE of Akutan, Alaska with origin time 22:44 UTC on July 18, 2021. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 22:21:24 UTC | 2.2ml | 6 km ENE of P?hala, Hawaii 19.216°, -155.415° | 34.5 km | - | - | - | Auto | USGS → |
On July 18, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 6 km ENE of P?hala, Hawaii at 22:21 UTC. Coming 13 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. | ||||||||
2021-07-18 2021-07-18 22:21:02 UTC | 4.4mb | 177 km SSW of Severo-Kuril’sk, Russia 49.124°, 155.558° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 177 km SSW of Severo-Kuril’sk, Russia on July 18, 2021, with origin time 22:21 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 22:16:26 UTC | 2.0ml | 37 km SSW of False Pass, Alaska 54.536°, -163.618° | 94.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 37 km SSW of False Pass, Alaska at 22:16 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 22:09:22 UTC | 4.4mb | 73 km WSW of Al May?d?n, Syria 34.774°, 39.699° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 73 km WSW of Al May?d?n, Syria came in on July 18, 2021 at 22:09 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:59:46 UTC | 4.5mb | 10 km SSW of Challapata, Bolivia -18.993°, -66.797° | 258.7 km | 1 | - | - | ✓ Reviewed | USGS → |
July 18, 2021 brought a magnitude 4.5 earthquake 10 km SSW of Challapata, Bolivia, logged at 21:59 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:56:17 UTC | 4.6mb | Izu Islands, Japan region 32.243°, 141.738° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021, worldwide seismic activity registered a magnitude 4.6 earthquake in the Izu Islands, Japan region at 21:56 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:55:33 UTC | 4.4mb | 46 km NE of Tobelo, Indonesia 1.997°, 128.335° | 51.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 46 km NE of Tobelo, Indonesia on July 18, 2021 at 21:55 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:32:30 UTC | 4.5mb | 87 km SE of Arica, Chile -18.995°, -69.673° | 108.2 km | 2 | - | - | ✓ Reviewed | USGS → |
On July 18, 2021 at 21:32 UTC, a magnitude 4.5 earthquake struck 87 km SE of Arica, Chile. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:31:19 UTC | 4.3mb | 99 km WNW of Mohr, Iran 27.949°, 51.978° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 99 km WNW of Mohr, Iran came in on July 18, 2021 at 21:31 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:26:10 UTC | 3.1md | 6 km WSW of La Parguera, Puerto Rico 17.953°, -67.108° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 6 km WSW of La Parguera, Puerto Rico on July 18, 2021 at 21:26 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.5 earthquake that occurred about 18 hours earlier. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:17:39 UTC | 2.1md | 4 km E of P?hala, Hawaii 19.197°, -155.433° | 33.1 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 4 km E of P?hala, Hawaii on July 18, 2021 at 21:17 UTC. It arrived roughly 12 hours after a larger magnitude 2.2 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:14:46 UTC | 2.5ml | Rat Islands, Aleutian Islands, Alaska 50.170°, 178.596° | 32.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected near Rat Islands, Aleutian Islands, Alaska on July 18, 2021, with origin time 21:14 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 21:07:44 UTC | 4.3mb | 52 km NNE of Añelo, Argentina -37.906°, -68.582° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 52 km NNE of Añelo, Argentina on July 18, 2021 at 21:07 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 20:58:11 UTC | 2.1ml | 11 km S of Smiley, Texas 29.164°, -97.626° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 11 km S of Smiley, Texas on July 18, 2021 at 20:58 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 20:50:30 UTC | 4.2mb | 67 km SW of Panguna, Papua New Guinea -6.670°, 154.983° | 102.4 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021, worldwide seismic activity registered a magnitude 4.2 earthquake 67 km SW of Panguna, Papua New Guinea at 20:50 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 20:43:42 UTC | 4.2mb | 41 km N of Bor?zj?n, Iran 29.642°, 51.197° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:43 UTC on July 18, 2021, a magnitude 4.2 tremor occurred 41 km N of Bor?zj?n, Iran. Coming 6 hours after a magnitude 5.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 20:40:06 UTC | 2.6ml | 56 km NW of Toyah, Texas 31.650°, -104.235° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 56 km NW of Toyah, Texas on July 18, 2021 at 20:40 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 20:30:13 UTC | 3.9mb | 82 km SW of Atka, Alaska 51.775°, -175.186° | 48.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.9 earthquake 82 km SW of Atka, Alaska with origin time 20:30 UTC on July 18, 2021. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 19:01:35 UTC | 2.3ml | 8km NNE of Olancha, CA 36.344°, -117.968° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
July 18, 2021 brought a magnitude 2.3 earthquake 8km NNE of Olancha, CA, logged at 19:01 UTC. 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. | ||||||||
2021-07-18 2021-07-18 18:21:03 UTC | 2.3md | 4 km WSW of La Parguera, Puerto Rico 17.953°, -67.085° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 4 km WSW of La Parguera, Puerto Rico came in on July 18, 2021 at 18:21 UTC. Coming 14 hours after a magnitude 4.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-07-18 2021-07-18 18:17:12 UTC | 2.3md | 6 km WSW of La Parguera, Puerto Rico 17.954°, -67.101° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 18, 2021 at 18:17 UTC, a magnitude 2.3 earthquake struck 6 km WSW of La Parguera, Puerto Rico. Coming 14 hours after a magnitude 4.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 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 18, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.