Earthquakes on July 23, 2023
261
EARTHQUAKES on July 23, 2023
24-hour UTC period · USGS data
LARGEST: M5.1 — Java, Indonesia
97 km deep · 13 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
34
M3.0–3.9
13
M2.0–2.9
65
M1.0–1.9
148
Activity Summary
261
Total earthquakes
~250
Daily average
Normal
Activity level
1
M5.0+ events
Significant Earthquakes (M4.5+)
5.1
Java, Indonesia
12:33 UTC · 96.6 km deep
Felt by 13
4.9
southwestern Atlantic Ocean
16:02 UTC · 10.0 km deep
4.8
50 km SSW of Chirilagua, El Salvador
19:37 UTC · 76.9 km deep
Felt by 1
4.8
south of Africa
06:09 UTC · 10.0 km deep
4.7
13 km SSE of Maravilla Tenejapa, Mexico
18:23 UTC · 10.0 km deep
Felt by 4
4.7
northern Mid-Atlantic Ridge
10:55 UTC · 10.0 km deep
4.6
172 km W of Pyay, Myanmar
06:47 UTC · 10.0 km deep
4.6
West Chile Rise
00:23 UTC · 10.0 km deep
Earthquake Map — July 23, 2023
All Earthquakes — July 23, 2023
Showing 30 of 113 (filtered from 261)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-07-23 2023-07-23 22:49:33 UTC | 4.2mb | south of the Fiji Islands -23.715°, -179.987° | 509.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded south of the Fiji Islands on July 23, 2023 at 22:49 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 22:27:47 UTC | 2.1ml | 117 km SSE of Sand Point, Alaska 54.327°, -159.964° | 8.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 117 km SSE of Sand Point, Alaska on July 23, 2023 at 22:27 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 18 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 22:10:41 UTC | 2.6ml | 31 km SSE of Mina, Nevada 38.155°, -117.916° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 31 km SSE of Mina, Nevada on July 23, 2023, with origin time 22:10 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 22:10:04 UTC | 2.3md | 8 km WNW of Cobb, CA 38.843°, -122.817° | 1.6 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:10 UTC on July 23, 2023, a magnitude 2.3 tremor occurred 8 km WNW of Cobb, CA. It arrived roughly 1 hours after a larger magnitude 2.8 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. | ||||||||
2023-07-23 2023-07-23 22:09:48 UTC | 2.8md | 8 km WNW of Cobb, CA 38.846°, -122.811° | 1.5 km | 1 | - | - | ✓ Reviewed | USGS → |
July 23, 2023 brought a magnitude 2.8 earthquake 8 km WNW of Cobb, CA, logged at 22:09 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 22:06:26 UTC | 2.6ml | 110 km W of Akhiok, Alaska 56.870°, -155.981° | 2.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 110 km W of Akhiok, Alaska came in on July 23, 2023 at 22:06 UTC. 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. | ||||||||
2023-07-23 2023-07-23 22:05:31 UTC | 2.6ml | 66 km W of Akhiok, Alaska 56.853°, -155.243° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 66 km W of Akhiok, Alaska on July 23, 2023 at 22:05 UTC. 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. | ||||||||
2023-07-23 2023-07-23 21:49:15 UTC | 2.1ml | 5 km NNE of Stanley, Idaho 44.263°, -114.905° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 5 km NNE of Stanley, Idaho with origin time 21:49 UTC on July 23, 2023. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:56:00 UTC | 3.0ml | Kodiak Island region, Alaska 57.431°, -154.945° | 70.2 km | - | - | - | ✓ Reviewed | USGS → |
At 20:56 UTC on July 23, 2023, a magnitude 3.0 tremor occurred in the Kodiak Island region, Alaska. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:52:06 UTC | 3.8ml | 2 km E of Chino Valley, Arizona 34.758°, -112.432° | 5.0 km | 975 | IV | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.8 earthquake 2 km E of Chino Valley, Arizona at 20:52 UTC on July 23, 2023. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:37:50 UTC | 2.3ml | 115 km SSE of Sand Point, Alaska 54.339°, -160.024° | 8.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 23, 2023 at 20:37 UTC, a magnitude 2.3 earthquake struck 115 km SSE of Sand Point, Alaska. Coming 16 hours after a magnitude 3.0 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. | ||||||||
2023-07-23 2023-07-23 20:30:56 UTC | 2.4ml | 7 km SW of Volcano, Hawaii 19.385°, -155.279° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 7 km SW of Volcano, Hawaii on July 23, 2023 at 20:30 UTC. It arrived roughly 5 hours after a larger magnitude 2.6 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:30:45 UTC | 3.0ml | 14 km E of Sweeney Ranch, Wyoming 41.496°, -108.841° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 14 km E of Sweeney Ranch, Wyoming at 20:30 UTC on July 23, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:30:45 UTC | 3.3ml | 263 km SSW of Nikolski, Alaska 50.894°, -170.782° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
July 23, 2023 brought a magnitude 3.3 earthquake 263 km SSW of Nikolski, Alaska, logged at 20:30 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:26:07 UTC | 2.8ml | 53 km ESE of Sand Point, Alaska 55.161°, -159.720° | 46.2 km | - | - | - | ✓ Reviewed | USGS → |
On July 23, 2023 at 20:26 UTC, a magnitude 2.8 earthquake struck 53 km ESE of Sand Point, Alaska. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:24:33 UTC | 2.0ml | 26 km NW of Toyah, Texas 31.474°, -103.997° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
On July 23, 2023, worldwide seismic activity registered a magnitude 2.0 earthquake 26 km NW of Toyah, Texas at 20:24 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 20:20:25 UTC | 2.7ml | 126 km S of Sand Point, Alaska 54.205°, -160.720° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 126 km S of Sand Point, Alaska at 20:20 UTC on July 23, 2023. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:48:38 UTC | 2.0md | 6 km SSW of Pāhala, Hawaii 19.144°, -155.495° | 32.8 km | - | - | - | Auto | USGS → |
On July 23, 2023 at 19:48 UTC, a magnitude 2.0 earthquake struck 6 km SSW of Pāhala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 13 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:37:26 UTC | 4.8mww | 50 km SSW of Chirilagua, El Salvador 12.782°, -88.255° | 76.9 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.8 earthquake 50 km SSW of Chirilagua, El Salvador with origin time 19:37 UTC on July 23, 2023. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:35:34 UTC | 2.7ml | 243 km WSW of Adak, Alaska 51.310°, 179.964° | 64.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 243 km WSW of Adak, Alaska on July 23, 2023, with origin time 19:35 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:35:11 UTC | 4.1mb | 82 km N of Santa Rosalía, Mexico 28.084°, -112.173° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On July 23, 2023, worldwide seismic activity registered a magnitude 4.1 earthquake 82 km N of Santa Rosalía, Mexico at 19:35 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:32:10 UTC | 2.1md | 1 km NNE of Almanor, CA 40.227°, -121.169° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 1 km NNE of Almanor, CA came in on July 23, 2023 at 19:32 UTC. 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. | ||||||||
2023-07-23 2023-07-23 19:28:58 UTC | 2.0ml | 94 km SE of King Cove, Alaska 54.460°, -161.283° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
At 19:28 UTC on July 23, 2023, a magnitude 2.0 tremor occurred 94 km SE of King Cove, Alaska. Coming 3 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:24:26 UTC | 4.4mb | 8 km SSE of Puerto Bolívar, Ecuador -3.340°, -79.972° | 53.4 km | - | - | - | ✓ Reviewed | USGS → |
At 19:24 UTC on July 23, 2023, a magnitude 4.4 tremor occurred 8 km SSE of Puerto Bolívar, Ecuador. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:21:36 UTC | 2.8ml | 118 km ESE of Akutan, Alaska 53.773°, -164.072° | 33.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 118 km ESE of Akutan, Alaska on July 23, 2023 at 19:21 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 19:09:51 UTC | 2.0ml | 291 km WSW of Adak, Alaska 51.053°, 179.377° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 291 km WSW of Adak, Alaska at 19:09 UTC on July 23, 2023. It arrived roughly 3 hours after a larger magnitude 2.9 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. | ||||||||
2023-07-23 2023-07-23 18:51:04 UTC | 2.8ml | 56km SSW of Maneadero, B.C., MX 31.258°, -116.817° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
On July 23, 2023, worldwide seismic activity registered a magnitude 2.8 earthquake 56km SSW of Maneadero, B.C., MX at 18:51 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 18:32:02 UTC | 2.0ml | 141 km WSW of Adak, Alaska 51.414°, -178.536° | 21.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 141 km WSW of Adak, Alaska on July 23, 2023, with origin time 18:32 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 18:23:08 UTC | 4.7mb | 13 km SSE of Maravilla Tenejapa, Mexico 16.037°, -91.229° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
At 18:23 UTC on July 23, 2023, a magnitude 4.7 tremor occurred 13 km SSE of Maravilla Tenejapa, Mexico. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-07-23 2023-07-23 18:05:24 UTC | 4.1mb | 81 km SSW of Bahía de Kino, Mexico 28.112°, -112.168° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:05 UTC on July 23, 2023, a magnitude 4.1 tremor occurred 81 km SSW of Bahía de Kino, Mexico. See the M4.1 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 23, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.