QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

19 km SW of Millinocket, Maine

· 2.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Penobscot County 20 kmPiscataquis County 48 kmSomerset County 85 kmHancock County 113 kmWashington County 116 kmWaldo County 118 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 1.8 (ml)
Depth
2.0 km below the surface
Felt
no reports yet
Nearest
Penobscot County, 20 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1265 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 45.5220, -68.8614. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Penobscot County, ME 20 km (12 mi) NW of here earthquakes near Penobscot County
Piscataquis County, ME 48 km (30 mi) SSE of here earthquakes near Piscataquis County
Somerset County, ME 85 km (53 mi) E of here earthquakes near Somerset County
Hancock County, ME 113 km (70 mi) NNW of here earthquakes near Hancock County
Washington County, ME 116 km (72 mi) WNW of here earthquakes near Washington County
Waldo County, ME 118 km (73 mi) N of here earthquakes near Waldo County

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

Aftershocks so far

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

  1. 1.8 7 km NNE of Burlington, Maine
  2. 2.0 5 km ENE of Dover-Foxcroft, Maine
  3. 2.0 7 km ESE of Dover-Foxcroft, Maine
  4. 1.5 20 km WSW of Millinocket, Maine
  5. 1.5 23 km WNW of Millinocket, Maine
  6. 2.5 35 km NW of Millinocket, Maine
  7. 1.9 3 km SW of Sebec, Maine
  8. 1.6 4 km NNE of Bowerbank, Maine
  9. 1.5 31 km W of Millinocket, Maine
  10. 1.5 24 km WNW of Millinocket, Maine

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.