QuakeIndex

Earthquake · reviewed by a seismologist

M 4.8mwr

2024 Tewksbury, New Jersey Earthquake

· 2.6 km deep · released about 240 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Somerset County 19 kmHunterdon County 19 kmMorris County 25 kmWarren County 27 kmUnion County 38 kmMiddlesex County 41 kmEssex County 44 kmMercer County 46 kmNorthampton County 47 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 4.8 (mwr)
Depth
2.6 km below the surface
Felt
184673 reports · strongest reported intensity V
Measured shaking
intensity VI (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Somerset County, 19 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 35 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 184673 people have reported feeling it to USGS.

How big was it?

This earthquake released about 240 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.8 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 710× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 32× the energy of this one
  3. Magna, Utah 2020 M 5.7 22× the energy of this one
  4. This earthquake M 4.8 about 240 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 500× more

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.

Where

Epicentre 40.6963, -74.7596. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Somerset County, NJ 19 km (12 mi) NW of here earthquakes near Somerset County
Hunterdon County, NJ 19 km (12 mi) NE of here earthquakes near Hunterdon County
Morris County, NJ 25 km (16 mi) SW of here earthquakes near Morris County
Warren County, NJ 27 km (17 mi) SE of here earthquakes near Warren County
Union County, NJ 38 km (24 mi) W of here earthquakes near Union County
Middlesex County, NJ 41 km (26 mi) NW of here earthquakes near Middlesex County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

  1. 1.7 6 km ESE of Califon, New Jersey
  2. 1.7 1 km SW of Gladstone, New Jersey
  3. 2.6 1 km NW of Gladstone, New Jersey
  4. 1.8 6 km ESE of Califon, New Jersey
  5. 1.5 6 km SSE of Long Valley, New Jersey
  6. 1.6 6 km ESE of Califon, New Jersey
  7. 2.9 7 km WSW of Gladstone, New Jersey
  8. 1.6 7 km E of Califon, New Jersey
  9. 1.5 5 km SW of Gladstone, New Jersey
  10. 2.1 6 km W of Gladstone, New Jersey
  11. 1.5 5 km E of Califon, New Jersey
  12. 1.5 5 km NNE of Whitehouse Station, New Jersey
  13. 1.5 5 km N of Whitehouse Station, New Jersey
  14. 1.5 3 km NNE of Whitehouse Station, New Jersey
  15. 1.8 4 km SW of Gladstone, New Jersey

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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.