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Event status: highly uncertain [?]

Reported quake or seismic-like event: 9.6 mi south of Philadelphia, Filadelfia konderria County, Pennsylvania, USA, Monday, Sep 13, 2021 at 10:18 pm (GMT -4) -

Reported quake or seismic-like event: 9.6 mi south of Philadelphia, Filadelfia konderria County, Pennsylvania, USA, Monday, Sep 13, 2021 at 10:18 pm (GMT -4) Reported quake or seismic-like event: 9.6 mi south of Philadelphia, Filadelfia konderria County, Pennsylvania, USA, Monday, Sep 13, 2021 at 10:18 pm (GMT -4)
14 Sep 02:30 UTC: First to report: VolcanoDiscovery after 12 minutes.

Earthquake details

Date & timeSep 14, 2021 02:18:12 UTC -
Local time at epicenterMonday, Sep 13, 2021 at 10:18 pm (GMT -4)
Statushighly uncertain
Magnitudeunknown
Depth10.0 km
Epicenter latitude / longitude39.81311°N / 75.1725°W (Filadelfia konderria, Pennsylvania, United States)
Antipode39.813°S / 104.828°E
Shaking intensityVery weak shaking
Felt3 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities3 km (2 mi) SSW of Piscozackasing (New Jersey) (pop: 10,000) | Show on map | Quakes nearby
6 km (4 mi) NNW of Sewell (New Jersey) (pop: 37,400) | Show on map | Quakes nearby
12 km (7 mi) S of Whitman (pop: 49,700) | Show on map | Quakes nearby
13 km (8 mi) S of Wharton (pop: 49,700) | Show on map | Quakes nearby
13 km (8 mi) S of Pennsport (pop: 26,000) | Show on map | Quakes nearby
13 km (8 mi) SSW of Camden (New Jersey) (pop: 76,100) | Show on map | Quakes nearby
15 km (10 mi) S of Center City (pop: 57,200) | Show on map | Quakes nearby
16 km (10 mi) S of Philadelphia (pop: 1,567,400) | Show on map | Quakes nearby
16 km (10 mi) ESE of Chester (pop: 34,100) | Show on map | Quakes nearby
190 km (118 mi) NE of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 23.8°C (75 F), humidity: 86%, wind: 0 m/s (0 kts)
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Seismograms

Seismic station: Greenville, DE, USA (GEDE/LD network) | Distance from quake: 40 km / 25 mi | Show on map | Station Info
Seismic station Greenville, DE, 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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Baltimore (0 km NNE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 30-60 s : weak shaking  
Wilmington, DE / not felt : Waal Clock and ceiling mounted projector in my classroom were crooked upon arrival this morning  
Glassboro new Jersey (16.8 km SSE of epicenter) [Map] / Weak shaking (MMI III) / several minutes
Philadelphia (25.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s : Sitting in bed and it started vibrating side to side  

Earlier earthquakes in the same area

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