QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

7 km SE of Alexander, New York

· 5.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Genesee County 16 kmWyoming County 18 kmLivingston County 37 kmErie County 50 kmOrleans County 53 kmMonroe County 59 kmNiagara County 68 kmAllegany County 69 kmOntario County 72 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
5.0 km below the surface
Felt
no reports yet
Nearest
Genesee County, 16 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1607 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 42.8611, -78.1895. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Genesee County, NY 16 km (10 mi) S of here earthquakes near Genesee County
Wyoming County, NY 18 km (11 mi) N of here earthquakes near Wyoming County
Livingston County, NY 37 km (23 mi) WNW of here earthquakes near Livingston County
Erie County, NY 50 km (31 mi) ENE of here earthquakes near Erie County
Orleans County, NY 53 km (33 mi) S of here earthquakes near Orleans County
Monroe County, NY 59 km (37 mi) SW of here earthquakes near Monroe County

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

Aftershocks so far

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

  1. 1.5 1 km SSW of Bowmansville, New York
  2. 2.6 5 km SSW of Warsaw, New York

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.