QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Monmouth, ME

No earthquake was likely felt in Monmouth in the 24 hours to 9:15 am EST (14:15 UTC). The last one was M 3.8, 137 km (85 mi) SSW, at 10:22 am EST on 27 January 2025, estimated intensity III (weak) in town; 42,440 felt reports to USGS. Every earthquake near Monmouth

This page: a magnitude 1.6 earthquake was recorded 5 km (3 mi) south-southeast of Monmouth, ME, at 1:17 am EDT on 13 June 2026 (05:17 UTC), 12 km deep.

USGS: 5 km SSE of Monmouth, Maine

1:17 am EDT, Jun 13, 2026 · · 12 km deep · released about 7.6 lb of TNT

10 km30 km60 km120 km N Androscoggin County 17 kmKennebec County 31 kmSagadahoc County 34 kmLincoln County 45 kmCumberland County 51 kmOxford County 67 kmWaldo County 77 kmKnox County 79 kmFranklin County 93 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
1:17 am EDT on 13 June 2026 ()
Where
5 km (3 mi) south-southeast of Monmouth, ME · earthquakes near Monmouth
Magnitude
M 1.6 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Androscoggin County, 17 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 74 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Monmouth, 5 km away, the estimate is intensity II (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: Greene Village, Sabattus, Winthrop, Leeds, Wayne, Manchester.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 44.1970, -70.0005. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Androscoggin County, ME 17 km (10 mi) W earthquakes near Androscoggin County
Kennebec County, ME 31 km (19 mi) NE earthquakes near Kennebec County
Sagadahoc County, ME 34 km (21 mi) SSE earthquakes near Sagadahoc County
Lincoln County, ME 45 km (28 mi) ESE earthquakes near Lincoln County
Cumberland County, ME 51 km (31 mi) SSW earthquakes near Cumberland County
Oxford County, ME 67 km (42 mi) WNW earthquakes near Oxford County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 1.5 6 km WNW of Windsor, 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.