Light mag. 3.8 earthquake - 2.1 km southwest of Grębocice, Polkowice County, Lower Silesia, Poland, on Wednesday, 6 Jan 2021 6:02 am (GMT +1) -

Light mag. 3.8 earthquake - 2.1 km southwest of Grębocice, Polkowice County, Lower Silesia, Poland, on Wednesday, 6 Jan 2021 6:02 am (GMT +1)

Light magnitude 3.8 earthquake at 10 km depth

6 Jan 05:05 UTC: First to report: GFZ after 3 minutes.
6 Jan 05:15: Magnitude recalculated from 4.0 to 3.8.
Update Wed, 6 Jan 2021, 05:09
Light magnitude 4.0 quake hits 3 km southwest of Grębocice, Poland early morning
4.0 quake 6 Jan 6:02 am (GMT +1)
4.0 quake 6 Jan 6:02 am (GMT +1)
An earthquake of magnitude 4.0 occurred early morning on Wednesday 6 January 2021 at 6:02 am local time near Grębocice, Polkowice County, Lower Silesia, Poland, as reported by the German Research Centre for Geosciences (GFZ).
According to preliminary data, the quake was located at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Grębocice (pop. 1,500) located 3 km from the epicenter, Głogow (pop. 68,500) 9 km away, Polkowice (pop. 21,600) 10 km away, Żukowice (pop. 910) 14 km away, Lubin (pop. 77,500) 22 km away, Przemkow (pop. 6,500) 24 km away, Chocianow (pop. 8,200) 25 km away, and Gora (pop. 12,700) 29 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Breslavia (pop. 634,900) located 83 km from the epicenter.
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Earthquake data:

Date & time: 6 Jan 2021 05:02:26 UTC -
Local time at epicenter: Wednesday, 6 Jan 2021 6:02 am (GMT +1)
Magnitude: 3.8
Depth: 10.0 km
Epicenter latitude / longitude: 51.59°N / 16.14°E (Polkowice County, Lower Silesia, Poland)
Nearby towns and cities:
2 km (1 mi) WSW of Grębocice (pop: 1,500) --> See nearby quakes!
9 km (6 mi) SSE of Głogow (pop: 68,500) --> See nearby quakes!
11 km (7 mi) NNE of Polkowice (polkowicki) (pop: 21,600) --> See nearby quakes!
21 km (13 mi) NNW of Lubin (pop: 77,500) --> See nearby quakes!
38 km (23 mi) SE of Nowa Sol (Lubusz) (pop: 40,400) --> See nearby quakes!
41 km (25 mi) SW of Leszno (Greater Poland) (pop: 63,600) --> See nearby quakes!
42 km (26 mi) N of Legnica (pop: 106,000) --> See nearby quakes!
54 km (33 mi) NE of Bolesławiec (pop: 40,700) --> See nearby quakes!
83 km (51 mi) NW of Breslavia (pop: 634,900) --> See nearby quakes!
342 km (212 mi) W of Warsaw (Mazovia) (pop: 1,702,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 0.9°C (34 F), humidity: 99%, wind: 3 m/s (6 kts) from SW
Primary data source: GFZ (German Research Centre for Geosciences)
Estimated released energy: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 tons of TNT) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 3.810 kmPolandGFZ
M 3.81 kmPOLANDEMSC

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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160.4 km SW of epicenter [Map] / Moderate shaking (MMI V) : Wake up and open all not locked doors, falling kitchen glass. My home in 4floor
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