Earthquake · reviewed by a seismologist
M 2.3mb_lg
Earthquake near Port Norris, NJ
No earthquake was likely felt in Port Norris in the 24 hours to 3:27 am EST (08:27 UTC). The last one was M 2.3, 4 km (2 mi) SW, at 7:44 pm EDT on 28 October 2024, estimated intensity III (weak) in town. Every earthquake near Port Norris
This page: a magnitude 2.3 earthquake was recorded 4 km (2 mi) southwest of Port Norris, NJ, at 7:44 pm EDT on 28 October 2024 (23:44 UTC), 9.8 km deep.
USGS: 3 km SW of Port Norris, New Jersey
87 km (54 mi) S of Philadelphia, PA · 27 km (17 mi) SSW of Vineland, NJ
- When
- 7:44 pm EDT on 28 October 2024 ()
- Where
- 4 km (2 mi) southwest of Port Norris, NJ · earthquakes near Port Norris
- New Jersey today
- every earthquake in New Jersey in the last 24 hours
- Magnitude
- M 2.3 (mb_lg)
- Depth
- 9.8 km below the surface
- Felt
- no reports yet
- Nearest
- Cumberland County, 12 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 664 days ago
Earthquake alerts for Port Norris, NJ
Get a notification in this browser when USGS records an earthquake near Port Norris, NJ. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 36 km (22 mi) from the epicentre. In Port Norris, 4 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: Laurel Lake, Millville, Fairton, Woodbine, South Vineland, Villas.
How big was it?
This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
- Magna, Utah 2020 M 5.7 130,000× the energy of this one
- Around the size people start to feel M 3.0 11× the energy of this one
- This earthquake M 2.3 about 85 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 4.1 on 2017-11-30 — about 500 times the energy of this one.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 39.2260, -75.0708. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Cumberland County, NJ | 12 km (8 mi) | NNW | earthquakes near Cumberland County |
| Cape May County, NJ | 25 km (15 mi) | SE | earthquakes near Cape May County |
| Kent County, DE | 40 km (25 mi) | WSW | earthquakes near Kent County |
| Salem County, NJ | 46 km (28 mi) | NNW | earthquakes near Salem County |
| Atlantic County, NJ | 46 km (29 mi) | NE | earthquakes near Atlantic County |
| Gloucester County, NJ | 56 km (35 mi) | N | earthquakes near Gloucester County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.