Earthquakes on September 28, 2020
296
EARTHQUAKES on September 28, 2020
24-hour UTC period · USGS data
15 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
33
M3.0–3.9
11
M2.0–2.9
55
M1.0–1.9
195
Activity Summary
296
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Significant Earthquakes (M4.5+)
5.2
120 km SSW of Nikolski, Alaska
02:44 UTC · 15.5 km deep
5.1
South Sandwich Islands region
08:46 UTC · 10.0 km deep
4.9
61 km NE of Hengchun, Taiwan
20:50 UTC · 20.3 km deep
Felt by 7
4.9
263 km NE of Santa Cruz das Flores, Portugal
13:21 UTC · 10.0 km deep
Felt by 1
4.9
262 km NNE of Santa Cruz das Flores, Portugal
12:30 UTC · 10.0 km deep
4.9
274 km NE of Santa Cruz das Flores, Portugal
12:26 UTC · 10.0 km deep
4.8
40 km W of Valparaíso, Chile
16:49 UTC · 18.2 km deep
Felt by 12
4.8
30 km SSE of Karyes, Greece
04:12 UTC · 11.4 km deep
Felt by 6
Earthquake Map — September 28, 2020
All Earthquakes — September 28, 2020
Showing 30 of 101 (filtered from 296)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-09-28 2020-09-28 23:27:20 UTC | 4.5mb | 20 km SSE of Santa María Chico Ometepec, Mexico 15.995°, -97.928° | 20.1 km | 5 | - | - | ✓ Reviewed | USGS → |
At 23:27 UTC on September 28, 2020, a magnitude 4.5 tremor occurred 20 km SSE of Santa María Chico Ometepec, Mexico. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 22:59:45 UTC | 4.6mb | 5 km SSW of Istmina, Colombia 5.113°, -76.708° | 78.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake 5 km SSW of Istmina, Colombia with origin time 22:59 UTC on September 28, 2020. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 22:29:05 UTC | 4.4mb | 44 km ESE of Isangel, Vanuatu -19.635°, 169.697° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 44 km ESE of Isangel, Vanuatu came in on September 28, 2020 at 22:29 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 21:24:44 UTC | 3.4md | 85 km NNW of San Antonio, Puerto Rico 19.245°, -67.256° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020 at 21:24 UTC, a magnitude 3.4 earthquake struck 85 km NNW of San Antonio, Puerto Rico. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 20:55:20 UTC | 2.2ml | 13 km SW of Fairview, Wyoming 42.597°, -111.091° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 13 km SW of Fairview, Wyoming on September 28, 2020 at 20:55 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. | ||||||||
2020-09-28 2020-09-28 20:50:55 UTC | 4.9mww | 61 km NE of Hengchun, Taiwan 22.405°, 121.163° | 20.3 km | 7 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.9 earthquake 61 km NE of Hengchun, Taiwan with origin time 20:50 UTC on September 28, 2020. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 20:44:03 UTC | 2.4md | 4 km SSW of Guánica, Puerto Rico 17.933°, -66.917° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020 at 20:44 UTC, a magnitude 2.4 earthquake struck 4 km SSW of Guánica, Puerto Rico. It arrived roughly 13 hours after a larger magnitude 2.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 20:22:03 UTC | 2.2ml | 12 km S of Fern Forest, Hawaii 19.350°, -155.114° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 12 km S of Fern Forest, Hawaii with origin time 20:22 UTC on September 28, 2020. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 20:19:33 UTC | 2.1ml | 13 km S of Fern Forest, Hawaii 19.346°, -155.116° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 13 km S of Fern Forest, Hawaii on September 28, 2020 at 20:19 UTC. It arrived roughly 1 hours after a larger magnitude 2.1 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. | ||||||||
2020-09-28 2020-09-28 20:13:15 UTC | 4.3mb | 159 km NW of Panguna, Papua New Guinea -5.483°, 154.310° | 128.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 159 km NW of Panguna, Papua New Guinea on September 28, 2020 at 20:13 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 19:55:07 UTC | 3.1ml | 69 km SE of Sand Point, Alaska 54.891°, -159.742° | 28.4 km | - | - | - | ✓ Reviewed | USGS → |
At 19:55 UTC on September 28, 2020, a magnitude 3.1 tremor occurred 69 km SE of Sand Point, Alaska. Coming 9 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 19:41:24 UTC | 4.3mb | 99 km NW of Port-Vila, Vanuatu -17.085°, 167.667° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 99 km NW of Port-Vila, Vanuatu with origin time 19:41 UTC on September 28, 2020. This event falls inside the aftershock decay of a nearby magnitude 4.7 earthquake that occurred about 5 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 19:38:24 UTC | 2.1ml | 5 km SW of Volcano, Hawaii 19.398°, -155.265° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020 at 19:38 UTC, a magnitude 2.1 earthquake struck 5 km SW of Volcano, Hawaii. 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. | ||||||||
2020-09-28 2020-09-28 19:07:21 UTC | 4.5mb | Banda Sea -6.924°, 129.364° | 188.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake near Banda Sea at 19:07 UTC on September 28, 2020. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 19:05:08 UTC | 4.0mb | 71 km NE of Hengchun, Taiwan 22.454°, 121.243° | 19.1 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020, worldwide seismic activity registered a magnitude 4.0 earthquake 71 km NE of Hengchun, Taiwan at 19:05 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:51:26 UTC | 2.2ml | 1 km ESE of P?hala, Hawaii 19.199°, -155.461° | 32.2 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 1 km ESE of P?hala, Hawaii came in on September 28, 2020 at 18:51 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:50:03 UTC | 2.2ml | Central Alaska 62.055°, -149.839° | 33.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake near Central Alaska at 18:50 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:49:52 UTC | 2.1md | 4km ESE of Berkeley, CA 37.858°, -122.237° | 5.7 km | 19 | - | - | ✓ Reviewed | USGS → |
On September 28, 2020, worldwide seismic activity registered a magnitude 2.1 earthquake 4km ESE of Berkeley, CA at 18:49 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:38:27 UTC | 2.0ml | 26 km NW of Stanley, Idaho 44.366°, -115.195° | 8.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020 at 18:38 UTC, a magnitude 2.0 earthquake struck 26 km NW of Stanley, Idaho. It arrived roughly 11 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:27:15 UTC | 2.3md | 1 km E of Magas Arriba, Puerto Rico 18.018°, -66.755° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 1 km E of Magas Arriba, Puerto Rico at 18:27 UTC on September 28, 2020. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 18:16:11 UTC | 4.2mb | 65 km W of Pangkalan Brandan, Indonesia 3.940°, 97.697° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 65 km W of Pangkalan Brandan, Indonesia on September 28, 2020, with origin time 18:16 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 17:58:24 UTC | 4.3mb | 291 km SE of Ust’-Kamchatsk Staryy, Russia 54.350°, 165.681° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020, worldwide seismic activity registered a magnitude 4.3 earthquake 291 km SE of Ust’-Kamchatsk Staryy, Russia at 17:58 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 17:55:30 UTC | 2.5md | 3 km S of La Parguera, Puerto Rico 17.941°, -67.054° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 3 km S of La Parguera, Puerto Rico on September 28, 2020 at 17:55 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 10 hours earlier. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 17:51:56 UTC | 2.7md | 5 km WSW of Guánica, Puerto Rico 17.948°, -66.959° | 7.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.7 earthquake 5 km WSW of Guánica, Puerto Rico with origin time 17:51 UTC on September 28, 2020. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 10 hours earlier. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 17:04:58 UTC | 2.0md | 6 km SW of Volcano, Hawaii 19.407°, -155.285° | 0.7 km | - | - | - | Auto | USGS → |
At 17:04 UTC on September 28, 2020, a magnitude 2.0 tremor occurred 6 km SW of Volcano, Hawaii. 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. | ||||||||
2020-09-28 2020-09-28 16:58:18 UTC | 2.0ml | 105 km NW of Yakutat, Alaska 60.207°, -141.086° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 105 km NW of Yakutat, Alaska at 16:58 UTC on September 28, 2020. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 16:49:16 UTC | 4.8mb | 40 km W of Valparaíso, Chile -33.004°, -72.059° | 18.2 km | 12 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected 40 km W of Valparaíso, Chile on September 28, 2020, with origin time 16:49 UTC. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 16:31:06 UTC | 2.4ml | 15 km SW of Stanley, Idaho 44.124°, -115.085° | 13.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 15 km SW of Stanley, Idaho on September 28, 2020 at 16:31 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 16:26:55 UTC | 4.7mb | 99 km NW of Pariaman, Indonesia 0.068°, 99.540° | 96.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2020 at 16:26 UTC, a magnitude 4.7 earthquake struck 99 km NW of Pariaman, Indonesia. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-09-28 2020-09-28 16:21:47 UTC | 4.3mb | 10 km NE of Vicente Guerrero, Mexico 17.558°, -94.638° | 153.5 km | - | - | - | ✓ Reviewed | USGS → |
At 16:21 UTC on September 28, 2020, a magnitude 4.3 tremor occurred 10 km NE of Vicente Guerrero, Mexico. The event was offshore. 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 September 28, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.