QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

42 km ENE of Rockport, Massachusetts

· 10 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Essex County 61 kmYork County 77 kmRockingham County 78 kmStrafford County 87 kmSuffolk County 89 kmPlymouth County 106 kmMiddlesex County 108 kmCumberland County 109 kmNorfolk County 111 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 1.9 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Essex County, 61 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1583 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 42.8368, -70.1693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Essex County, MA 61 km (38 mi) ENE of here earthquakes near Essex County
York County, ME 77 km (48 mi) SSE of here earthquakes near York County
Rockingham County, NH 78 km (48 mi) ESE of here earthquakes near Rockingham County
Strafford County, NH 87 km (54 mi) SE of here earthquakes near Strafford County
Suffolk County, MA 89 km (55 mi) NE of here earthquakes near Suffolk County
Plymouth County, MA 106 km (66 mi) NNE of here earthquakes near Plymouth County

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

Aftershocks so far

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

  1. 2.1 34 km SE of York Beach, Maine
  2. 2.0 13 km SE of York Harbor, Maine
  3. 2.0 10 km SE of York Harbor, Maine
  4. 3.8 9 km SE of York Harbor, Maine
  5. 2.3 54 km E of Rockport, Massachusetts

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.