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Event status: highly uncertain [?]

Reported quake or seismic-like event: 0.4 mi northwest of Hickory-Town, York County, Pennsylvania, USA, Tuesday, Dec 28, 2021 at 1:10 am (GMT -5) -

Reported quake or seismic-like event: 0.4 mi northwest of Hickory-Town, York County, Pennsylvania, USA, Tuesday, Dec 28, 2021 at 1:10 am (GMT -5) Reported quake or seismic-like event: 0.4 mi northwest of Hickory-Town, York County, Pennsylvania, USA, Tuesday, Dec 28, 2021 at 1:10 am (GMT -5)
28 Dec 06:14 UTC: First to report: VolcanoDiscovery after 4 minutes.

Earthquake details

Date & timeDec 28, 2021 06:10:34 UTC -
Local time at epicenterTuesday, Dec 28, 2021 at 1:10 am (GMT -5)
Statushighly uncertain
Magnitudeunknown
Depth10.0 km
Epicenter latitude / longitude39.80319°N / 76.99006°W (York, Pennsylvania, United States)
Antipode39.803°S / 103.01°E
Shaking intensityWeak shaking
Felt2 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities1 km (0 mi) WNW of Hickory-Town (pop: 15,500) | Show on map | Quakes nearby
11 km (7 mi) NE of Littlestown (pop: 4,480) | Show on map | Quakes nearby
18 km (11 mi) NNW of Manchester (Maryland) (pop: 4,820) | Show on map | Quakes nearby
25 km (15 mi) SW of Weigelstown (pop: 12,900) | Show on map | Quakes nearby
25 km (16 mi) N of Bedford (Maryland) (pop: 18,700) | Show on map | Quakes nearby
25 km (16 mi) SW of Shiloh (pop: 11,200) | Show on map | Quakes nearby
29 km (18 mi) SW of York (pop: 44,000) | Show on map | Quakes nearby
39 km (25 mi) NNW of Washington (Maryland) (pop: 26,000) | Show on map | Quakes nearby
53 km (33 mi) NNW of Pikesville (Maryland) (pop: 30,800) | Show on map | Quakes nearby
101 km (63 mi) N of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeMist 1.2°C (34 F), humidity: 90%, wind: 0 m/s (0 kts)
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Seismograms

Seismic station: Greenville, DE, USA (GEDE/LD network) | Distance from quake: 116 km / 72 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 (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Translate
17331 (0 km ENE of epicenter) [Map] / Weak shaking (MMI III) / 1-2 s : Shaking  
Hanover (0 km WSW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short : At home in bed  

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