QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4mb_lg

Earthquake near Lima, OH

No earthquake was likely felt in Lima in the 24 hours to 4:58 pm EST (21:58 UTC). The last one was M 2.9, 35 km (21 mi) S, at 12:27 am EST on 9 December 2023, estimated intensity III (weak) in town; 387 felt reports to USGS. Every earthquake near Lima

This page: a magnitude 2.4 earthquake was recorded 4 km (2 mi) southwest of Lima, OH, at 12:22 am EST on 22 January 2021 (05:22 UTC), 5.6 km deep. 119 people have reported feeling it to USGS.

USGS: 3 km SW of Lima, Ohio

12:22 am EST, Jan 22, 2021 · · 5.6 km deep · released about 120 lb of TNT

10 km30 km60 km120 km N Allen County 6 kmAuglaize County 19 kmPutnam County 34 kmVan Wert County 40 kmHardin County 41 kmShelby County 43 kmMercer County 46 kmLogan County 49 kmHancock County 51 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
12:22 am EST on 22 January 2021 ()
Where
4 km (2 mi) southwest of Lima, OH · earthquakes near Lima
Magnitude
M 2.4 (mb_lg)
Depth
5.6 km below the surface
Felt
119 reports · strongest reported intensity IV
Nearest
Allen County, 6 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2038 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 41 km (25 mi) from the epicentre. In Lima, 4 km away, the estimate is intensity III (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: Fort Shawnee, Cridersville, Elida, Wapakoneta, Spencerville, Delphos.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 lists 2 earthquakes of M5 or more within 50 km:

  1. 5.4 Near Anna, Ohio · 30 km SSW of this epicentre
  2. 5.0 Near Anna, Ohio · 28 km SSW of this epicentre

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 40.7225, -84.1427. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Allen County, OH 6 km (4 mi) NNE earthquakes near Allen County
Auglaize County, OH 19 km (12 mi) SSW earthquakes near Auglaize County
Putnam County, OH 34 km (21 mi) N earthquakes near Putnam County
Van Wert County, OH 40 km (25 mi) WNW earthquakes near Van Wert County
Hardin County, OH 41 km (25 mi) E earthquakes near Hardin County
Shelby County, OH 43 km (27 mi) S earthquakes near Shelby 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. 2.9 5 km W of Jackson Center, Ohio

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.