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Event status: highly uncertain [?]

Reported quake or seismic-like event: 1.8 mi northeast of Washington, Washington DC, USA, Thursday, Oct 7, 2021 at 1:11 pm (GMT -4) -

Reported quake or seismic-like event: 1.8 mi northeast of Washington, Washington DC, USA, Thursday, Oct 7, 2021 at 1:11 pm (GMT -4) Reported quake or seismic-like event: 1.8 mi northeast of Washington, Washington DC, USA, Thursday, Oct 7, 2021 at 1:11 pm (GMT -4)
7 Oct 17:27 UTC: First to report: VolcanoDiscovery after 16 minutes.

Earthquake details

Date & timeOct 7, 2021 17:11:12 UTC -
Local time at epicenterThursday, Oct 7, 2021 at 1:11 pm (GMT -4)
Statushighly uncertain
Magnitudeunknown
Depth10.0 km
Epicenter latitude / longitude38.91565°N / 77.01544°W (Washington, Washington DC, United States)
Antipode38.916°S / 102.985°E
Shaking intensityLight shaking
Felt4 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities0 km (0 mi) WSW of Bloomingdale (pop: 4,980) | Show on map | Quakes nearby
1 km (0 mi) NE of Shaw (pop: 17,600) | Show on map | Quakes nearby
2 km (1 mi) ESE of Adams Morgan (pop: 15,800) | Show on map | Quakes nearby
3 km (2 mi) NE of Washington (pop: 601,700) | Show on map | Quakes nearby
6 km (4 mi) SSW of Chillum (Maryland) (pop: 33,500) | Show on map | Quakes nearby
8 km (5 mi) S of Silver Spring Md. (Maryland) (pop: 71,500) | Show on map | Quakes nearby
9 km (5 mi) ENE of Arlington (Virginia) (pop: 207,600) | Show on map | Quakes nearby
10 km (6 mi) SE of Bethesda (Maryland) (pop: 60,900) | Show on map | Quakes nearby
10 km (7 mi) WSW of Landover (Maryland) (pop: 23,100) | Show on map | Quakes nearby
13 km (8 mi) NNE of Alexandria (Virginia) (pop: 153,500) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 23.2°C (74 F), humidity: 73%, wind: 0 m/s (1 kts) from NE
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Seismograms

Seismic station: Corbin (Fredericksburg Observatory), Virginia, USA (CBN/US network) | Distance from quake: 85 km / 53 mi | Show on map | Station Info
Seismic station Corbin (Fredericksburg Observatory), Virginia, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Mount Vernon / Light shaking (MMI IV) / vibration and rolling / 2-5 s : Awoke to feeling the rumbling akin to the light shaking described above  
Davidsonville, MD / Very weak shaking (MMI II) / very short
washington dc (0 km NNW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 10-15 s : laying down in bed, everything started shaking for 10-15 seconds. just like earthquakes in california.  
washington dc (0 km NNW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 10-15 s : laying down in bed, everything started shaking for 10-15 seconds. just like earthquakes in california.  

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