50 km ENE of Rockport, Massachusetts

2016-06-01 02:29 UTC · 10 km deep · released about 60 lb of TNT

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: 2016-06-01 02:29 UTC
Magnitude: M 2.2 (mb_lg)
Depth: 10 km below the surface
Felt: no reports yet
Nearest: Essex County, 70 km W
Status: Reviewed by a seismologist

USGS · last changed by USGS 3699 days ago · we first saw it 3699 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
Magna, Utah 2020 M 5.7 180,000× the energy of this one
Around the size people start to feel M 3.0 16× the energy of this one
This earthquake M 2.2 about 60 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

Map loads when it scrolls into view

Epicentre 42.7566, -70.0221. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Essex County, MA	70 km (44 mi)	E of here	earthquakes near Essex County
York County, ME	91 km (57 mi)	SE of here	earthquakes near York County
Rockingham County, NH	91 km (57 mi)	ESE of here	earthquakes near Rockingham County
Suffolk County, MA	94 km (58 mi)	ENE of here	earthquakes near Suffolk County
Strafford County, NH	102 km (63 mi)	SE of here	earthquakes near Strafford County
Plymouth County, MA	104 km (65 mi)	NE of here	earthquakes near Plymouth County

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

Aftershocks so far

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

2.1 34 km SE of York Beach, Maine 08:19 UTC
2.3 54 km E of Rockport, Massachusetts 18:24 UTC
1.9 42 km ENE of Rockport, Massachusetts 05:14 UTC
2.4 29 km ESE of York Beach, Maine 15:15 UTC
1.5 27 km SE of Gloucester, Massachusetts 08:40 UTC
2.1 27 km NE of Rockport, Massachusetts 02:17 UTC
1.7 49 km SE of Kennebunkport, Maine 18:42 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 07:27 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.