Earthquakes on July 31, 2020
363
EARTHQUAKES on July 31, 2020
24-hour UTC period · USGS data
28 km deep · 5 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
36
M3.0–3.9
20
M2.0–2.9
65
M1.0–1.9
237
Activity Summary
363
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.7
34 km ENE of Hinatuan, Philippines
06:06 UTC · 28.0 km deep
Felt by 5
5.6
D'Entrecasteaux Islands region
10:02 UTC · 10.0 km deep
5.2
67 km N of Gizo, Solomon Islands
17:06 UTC · 403.5 km deep
5.2
150 km SSW of Kokopo, Papua New Guinea
16:04 UTC · 35.0 km deep
5.0
17 km ENE of Pachaconas, Peru
10:03 UTC · 56.4 km deep
Felt by 1
4.9
215 km NNE of Shi Yomi, India
16:45 UTC · 10.0 km deep
4.9
Izu Islands, Japan region
05:16 UTC · 10.0 km deep
4.8
146 km ENE of Nago, Japan
02:11 UTC · 10.0 km deep
Felt by 1
Earthquake Map — July 31, 2020
All Earthquakes — July 31, 2020
Showing 30 of 126 (filtered from 363)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-07-31 2020-07-31 23:34:08 UTC | 4.2mb | 124 km NNE of Lospalos, Timor Leste -7.551°, 127.565° | 137.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 124 km NNE of Lospalos, Timor Leste came in on July 31, 2020 at 23:34 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 23:22:34 UTC | 4.3mb | 99 km S of San Mateo del Mar, Mexico 15.326°, -94.834° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020 at 23:22 UTC, a magnitude 4.3 earthquake struck 99 km S of San Mateo del Mar, Mexico. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 22:58:56 UTC | 3.7mb | Rat Islands, Aleutian Islands, Alaska 52.079°, 175.283° | 61.2 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020, worldwide seismic activity registered a magnitude 3.7 earthquake near Rat Islands, Aleutian Islands, Alaska at 22:58 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:51:35 UTC | 2.1ml | 93 km SSE of Perryville, Alaska 55.144°, -158.554° | 21.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 93 km SSE of Perryville, Alaska on July 31, 2020 at 21:51 UTC. It arrived roughly 1 hours after a larger magnitude 3.4 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. | ||||||||
2020-07-31 2020-07-31 21:45:32 UTC | 2.0md | 4 km SSE of P?hala, Hawaii 19.163°, -155.460° | 36.0 km | - | - | - | Auto | USGS → |
July 31, 2020 brought a magnitude 2.0 earthquake 4 km SSE of P?hala, Hawaii, logged at 21:45 UTC. Coming 19 hours after a magnitude 2.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:39:33 UTC | 2.2ml | 99 km SSE of Perryville, Alaska 55.114°, -158.448° | 41.9 km | - | - | - | ✓ Reviewed | USGS → |
At 21:39 UTC on July 31, 2020, a magnitude 2.2 tremor occurred 99 km SSE of Perryville, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 1 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:32:53 UTC | 3.4ml | 103 km SSE of Perryville, Alaska 55.088°, -158.379° | 3.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.4 earthquake 103 km SSE of Perryville, Alaska at 21:32 UTC on July 31, 2020. 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. | ||||||||
2020-07-31 2020-07-31 21:32:18 UTC | 2.1ml | 39 km SE of Mina, Nevada 38.185°, -117.746° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
July 31, 2020 brought a magnitude 2.1 earthquake 39 km SE of Mina, Nevada, logged at 21:32 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 12 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:30:06 UTC | 2.1ml | 6km NW of Coso Junction, CA 36.087°, -117.988° | 4.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 6km NW of Coso Junction, CA on July 31, 2020, with origin time 21:30 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:28:44 UTC | 2.7ml | 258 km SSE of False Pass, Alaska 52.750°, -161.768° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 258 km SSE of False Pass, Alaska on July 31, 2020 at 21:28 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:23:49 UTC | 2.9ml | 116 km SE of King Cove, Alaska 54.324°, -161.033° | 8.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.9 earthquake 116 km SE of King Cove, Alaska with origin time 21:23 UTC on July 31, 2020. Coming 1 hours after a magnitude 4.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 21:19:47 UTC | 4.2mwr | 116 km SSW of Sand Point, Alaska 54.332°, -161.004° | 25.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 116 km SSW of Sand Point, Alaska on July 31, 2020 at 21:19 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:52:34 UTC | 2.1ml | 18km SE of Lone Pine, CA 36.463°, -117.942° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 18km SE of Lone Pine, CA came in on July 31, 2020 at 20:52 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:39:41 UTC | 2.0ml | 28 km SSE of Mina, Nevada 38.148°, -118.007° | 4.8 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020 at 20:39 UTC, a magnitude 2.0 earthquake struck 28 km SSE of Mina, Nevada. It arrived roughly 11 hours after a larger magnitude 3.4 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:37:44 UTC | 4.2mb | 44 km ESE of Samarai, Papua New Guinea -10.816°, 151.007° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
July 31, 2020 brought a magnitude 4.2 earthquake 44 km ESE of Samarai, Papua New Guinea, logged at 20:37 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:36:06 UTC | 3.1ml | 16 km W of Iquique, Chile -20.219°, -70.309° | 27.4 km | 5 | - | - | ✓ Reviewed | USGS → |
At 20:36 UTC on July 31, 2020, a magnitude 3.1 tremor occurred 16 km W of Iquique, Chile. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:35:38 UTC | 2.0ml | 27 km WNW of Stanley, Idaho 44.356°, -115.227° | 16.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 27 km WNW of Stanley, Idaho on July 31, 2020 at 20:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 2 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:20:19 UTC | 4.2mb | 180 km NE of Lospalos, Timor Leste -7.482°, 128.258° | 153.1 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020 at 20:20 UTC, a magnitude 4.2 earthquake struck 180 km NE of Lospalos, Timor Leste. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 20:16:05 UTC | 2.5md | 3 km SSE of Magas Arriba, Puerto Rico 17.992°, -66.753° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 3 km SSE of Magas Arriba, Puerto Rico at 20:16 UTC on July 31, 2020. It arrived roughly 11 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:55:58 UTC | 3.2ml | 157 km S of Nikolski, Alaska 51.528°, -168.682° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place 157 km S of Nikolski, Alaska on July 31, 2020 at 19:55 UTC. It arrived roughly 12 hours after a larger magnitude 4.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:51:39 UTC | 4.3mb | 182 km S of Nikolski, Alaska 51.307°, -168.565° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 182 km S of Nikolski, Alaska on July 31, 2020 at 19:51 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:50:58 UTC | 4.4mb | 17 km ENE of Salcedo, Philippines 11.206°, 125.818° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 17 km ENE of Salcedo, Philippines came in on July 31, 2020 at 19:50 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:47:58 UTC | 3.9mb | 173 km S of Nikolski, Alaska 51.385°, -168.617° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.9 earthquake was recorded 173 km S of Nikolski, Alaska on July 31, 2020 at 19:47 UTC. Coming 12 hours after a magnitude 4.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:44:15 UTC | 3.2ml | 167 km S of Nikolski, Alaska 51.436°, -168.703° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
July 31, 2020 brought a magnitude 3.2 earthquake 167 km S of Nikolski, Alaska, logged at 19:44 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.1 earthquake that occurred about 12 hours earlier. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:25:29 UTC | 2.2ml | 30 km SSE of Mina, Nevada 38.156°, -117.929° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 30 km SSE of Mina, Nevada at 19:25 UTC on July 31, 2020. Coming 10 hours after a magnitude 3.4 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. | ||||||||
2020-07-31 2020-07-31 19:16:08 UTC | 4.2mb | 147 km E of Kimbe, Papua New Guinea -5.557°, 151.468° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 147 km E of Kimbe, Papua New Guinea on July 31, 2020 at 19:16 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 19:10:04 UTC | 3.9mb | 180 km S of Nikolski, Alaska 51.322°, -168.582° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.9 earthquake 180 km S of Nikolski, Alaska with origin time 19:10 UTC on July 31, 2020. It arrived roughly 11 hours after a larger magnitude 4.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-07-31 2020-07-31 18:59:52 UTC | 2.1ml | 33 km SE of Mina, Nevada 38.166°, -117.847° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020 at 18:59 UTC, a magnitude 2.1 earthquake struck 33 km SE of Mina, Nevada. Coming 10 hours after a magnitude 3.4 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. | ||||||||
2020-07-31 2020-07-31 18:58:48 UTC | 4.2mb | 206 km N of Shi Yomi, India 30.357°, 94.773° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 206 km N of Shi Yomi, India with origin time 18:58 UTC on July 31, 2020. Coming 2 hours after a magnitude 4.9 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. | ||||||||
2020-07-31 2020-07-31 18:58:07 UTC | 3.2ml | 26 km SSE of Wright, Wyoming 43.547°, -105.322° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 31, 2020 at 18:58 UTC, a magnitude 3.2 earthquake struck 26 km SSE of Wright, Wyoming. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 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 31, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.