QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

2 km S of Woodbridge, Connecticut

· 11 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N South Central Connecticut Planning Region 15 kmNaugatuck Valley Planning Region 21 kmGreater Bridgeport Planning Region 23 kmWestern Connecticut Planning Region 37 kmLower Connecticut River Valley Planning Region 44 kmSuffolk County 51 kmNorthwest Hills Planning Region 60 kmPutnam County 62 kmWestchester County 65 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 1.5 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
South Central Connecticut Planning Region, 15 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3046 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 41.3348, -73.0121. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
South Central Connecticut Planning Region, CT 15 km (10 mi) WNW of here earthquakes near South Central Connecticut Planning Region
Naugatuck Valley Planning Region, CT 21 km (13 mi) SSE of here earthquakes near Naugatuck Valley Planning Region
Greater Bridgeport Planning Region, CT 23 km (15 mi) NE of here earthquakes near Greater Bridgeport Planning Region
Western Connecticut Planning Region, CT 37 km (23 mi) E of here earthquakes near Western Connecticut Planning Region
Lower Connecticut River Valley Planning Region, CT 44 km (28 mi) WSW of here earthquakes near Lower Connecticut River Valley Planning Region
Suffolk County, NY 51 km (32 mi) NNW of here earthquakes near Suffolk 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. 2.0 3 km E of Plainville, Connecticut
  2. 1.5 3 km NNW of Killingworth, Connecticut
  3. 1.6 2 km ENE of Newington, Connecticut
  4. 1.9 3 km SW of West Hartford, Connecticut
  5. 1.9 3 km ENE of Durham, Connecticut

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.