QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

Earthquake near Woodlawn, MD

No earthquake was likely felt in Woodlawn in the 24 hours to 3:26 am EST (08:26 UTC). The last one was M 2.5, 18 km (11 mi) SSW, at 5:17 pm EDT on 27 October 2025, estimated intensity II (weak) in town; 1,228 felt reports to USGS. Every earthquake near Woodlawn

This page: a magnitude 2.6 earthquake was recorded 3 km (2 mi) southeast of Woodlawn, MD, at 3:40 pm EDT on 25 June 2021 (19:40 UTC), 2.5 km deep. 940 people have reported feeling it to USGS.

USGS: 2 km SE of Woodlawn, Maryland

8 km (5 mi) W of Baltimore, MD

3:40 pm EDT, Jun 25, 2021 · · 2.5 km deep · released about 240 lb of TNT

10 km30 km60 km120 km N Baltimore city 8 kmBaltimore County 17 kmHoward County 19 kmAnne Arundel County 37 kmCarroll County 39 kmHarford County 44 kmMontgomery County 46 kmKent County 51 kmDistrict of Columbia 52 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
3:40 pm EDT on 25 June 2021 ()
Where
3 km (2 mi) southeast of Woodlawn, MD · earthquakes near Woodlawn
Magnitude
M 2.6 (mb_lg)
Depth
2.5 km below the surface
Felt
940 reports · strongest reported intensity IV
Nearest
Baltimore city, 8 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1888 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 51 km (32 mi) from the epicentre. In Woodlawn, 3 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: Wakefield, Hunting Ridge, West Forest Park, Rognel Heights, Ten Hills, Edmondson Village.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 39.3046, -76.7089. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Baltimore city, MD 8 km (5 mi) E earthquakes near Baltimore city
Baltimore County, MD 17 km (11 mi) NNE earthquakes near Baltimore County
Howard County, MD 19 km (12 mi) WSW earthquakes near Howard County
Anne Arundel County, MD 37 km (23 mi) SSE earthquakes near Anne Arundel County
Carroll County, MD 39 km (24 mi) NW earthquakes near Carroll County
Harford County, MD 44 km (27 mi) NE earthquakes near Harford County

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

Aftershocks so far

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

  1. 2.4 8 km NE of Bel Air North, Maryland
  2. 2.5 4 km E of Riverside, Maryland
  3. 1.8 1 km NE of Spencerville, Maryland
  4. 2.3 0 km WSW of Rockville, Maryland
  5. 2.0 4 km ESE of Sykesville, Maryland
  6. 1.7 0 km S of Woodlawn, Maryland
  7. 2.1 Clarksville, Maryland
  8. 1.6 1 km NNW of Irvington, Maryland

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.