QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

1 km WSW of Lake Telemark, New Jersey

· 5.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morris County 11 kmPassaic County 20 kmSussex County 25 kmEssex County 29 kmUnion County 37 kmBergen County 37 kmWarren County 43 kmSomerset County 44 kmHudson County 44 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 1.7 (ml)
Depth
5.0 km below the surface
Felt
18 reports · strongest reported intensity IV
Nearest
Morris County, 11 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 904 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 18 people have reported feeling it to USGS.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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.

Where

Epicentre 40.9531, -74.5171. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morris County, NJ 11 km (7 mi) NNE of here earthquakes near Morris County
Passaic County, NJ 20 km (13 mi) WSW of here earthquakes near Passaic County
Sussex County, NJ 25 km (16 mi) SE of here earthquakes near Sussex County
Essex County, NJ 29 km (18 mi) NW of here earthquakes near Essex County
Union County, NJ 37 km (23 mi) NNW of here earthquakes near Union County
Bergen County, NJ 37 km (23 mi) W of here earthquakes near Bergen 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. 2.6 1 km NW of Gladstone, New Jersey
  2. 1.8 6 km ESE of Califon, New Jersey
  3. 1.5 6 km SSE of Long Valley, New Jersey
  4. 1.6 6 km ESE of Califon, New Jersey
  5. 2.9 7 km WSW of Gladstone, New Jersey
  6. 1.6 7 km E of Califon, New Jersey
  7. 1.5 5 km SW of Gladstone, New Jersey
  8. 2.1 6 km W of Gladstone, New Jersey
  9. 1.5 5 km E of Califon, New Jersey
  10. 1.5 5 km NNE of Whitehouse Station, New Jersey
  11. 1.5 5 km N of Whitehouse Station, New Jersey
  12. 1.5 3 km NNE of Whitehouse Station, New Jersey
  13. 1.8 4 km SW of Gladstone, New Jersey
  14. 1.9 5 km SW of Gladstone, New Jersey
  15. 1.7 6 km ESE of Califon, 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

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