Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-12-2020 and time 23:51:06 (Italy) in region 6 km SW Villalago (AQ)

A magnitude ML 2.0 earthquake occured in region: 6 km SW Villalago (AQ), on

  • 17-12-2020 22:51:06 (UTC)
  • 17-12-2020 23:51:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8900, 13.8140 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villalago AQ 6 568 568
Bisegna AQ 6 223 791
Scanno AQ 6 1847 2638
Pescasseroli AQ 9 2203 4841
Lecce nei Marsi AQ 12 1702 6543
Anversa degli Abruzzi AQ 12 341 6884
Gioia dei Marsi AQ 12 1989 8873
Opi AQ 12 420 9293
Ortona dei Marsi AQ 14 542 9835
Rocca Pia AQ 15 178 10013
Introdacqua AQ 15 2126 12139
Pettorano sul Gizio AQ 15 1376 13515
Bugnara AQ 15 1125 14640
Ortucchio AQ 16 1860 16500
Villetta Barrea AQ 16 653 17153
Villavallelonga AQ 16 919 18072
Cocullo AQ 16 230 18302
Civitella Alfedena AQ 17 296 18598
Prezza AQ 19 945 19543
Collelongo AQ 19 1233 20776
Pescina AQ 20 4133 24909
Sulmona AQ 20 24557 49466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km SW of Chieti (51815 inhabitants)
62 Km SE of L'Aquila (69753 inhabitants)
72 Km SW of Pescara (121014 inhabitants)
75 Km SW of Montesilvano (53738 inhabitants)
84 Km E of Tivoli (56533 inhabitants)
86 Km S of Teramo (54892 inhabitants)
89 Km E of Velletri (53303 inhabitants)
89 Km NE of Latina (125985 inhabitants)
91 Km E of Guidonia Montecelio (88673 inhabitants)
100 Km NW of Caserta (76326 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.0 2020-12-17
22:51:06		 41.8903 13.8135 15 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86170031
Reviewed
Rev100 		ML 2.0 2020-12-17
22:51:06		 41.8915 13.8205 16 2020-12-17
22:56:46		 Sala Sismica INGV-Roma 85502951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-17 22:51:06 ± 0.05
Latitude 41.8903 ± 0.0027
Longitude 13.8135 ± 0.0036
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86170031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74824
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 85502951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-17 22:56:46

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 86170031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 11:34:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2020-12-17T22:51:33.83 3.0 positive manual Pg 2.94 0
IV.TERO.HHZ. 2020-12-17T22:51:31.96 0.3 undecidable manual S 348 83.0502 93 0.53 59
IV.CRTO.HHZ. 2020-12-17T22:51:27.85 3.0 undecidable manual P 0.73 0
IV.MELA.HHZ. 2020-12-17T22:51:24.35 3.0 negative manual P -0.39 0
IV.VCEL.EHZ. 2020-12-17T22:51:24.82 0.3 undecidable manual S 2 55.9995 95 0.6 61
IV.MIDA.HHZ. 2020-12-17T22:51:22.07 0.3 undecidable manual S 127 45.7209 97 0.58 61
IV.TERO.HHZ. 2020-12-17T22:51:20.60 0.3 undecidable manual P 348 83.0502 93 -0.41 61
IV.GUAR.HHZ. 2020-12-17T22:51:20.94 0.3 undecidable manual S 256 42.7239 97 0.23 68
IV.T0110.HHN. 2020-12-17T22:51:19.77 0.3 undecidable manual S 355 37.7289 99 0.39 67
IV.CERA.HHZ. 2020-12-17T22:51:19.18 0.3 undecidable manual S 152 36.6411 99 0.1 70
IV.PTQR.HHZ. 2020-12-17T22:51:19.53 0.3 undecidable manual S 293 37.0296 99 0.33 68
IV.LPEL.HHZ. 2020-12-17T22:51:18.86 0.3 undecidable manual S 60 35.1426 100 0.18 70
IV.LRP.EHZ. 2020-12-17T22:51:18.38 0.3 undecidable manual S 215 32.8449 101 0.28 69
IV.RNI2.HHZ. 2020-12-17T22:51:18.91 0.3 undecidable manual S 126 34.8429 100 0.28 68
IV.GIUL.HHZ. 2020-12-17T22:51:17.07 0.1 positive manual P 232 59.0964 95 -0.26 88
IV.GIGS.HHE. 2020-12-17T22:51:17.81 0.3 undecidable manual P 342 65.49 94 -0.5 62
IV.TRIV.HHZ. 2020-12-17T22:51:17.81 0.3 undecidable manual P 102 62.3931 94 -0.02 69
IV.VCEL.EHZ. 2020-12-17T22:51:16.74 0.1 positive manual P 2 55.9995 95 -0.1 91
IV.LIK.EHN.01 2020-12-17T22:51:15.93 0.3 undecidable manual P 206 48.2184 96 0.28 67
IT.SULA.HNZ. 2020-12-17T22:51:15.41 0.6 undecidable manual S 23 22.0668 110 0.11 49
IT.SULP.HGZ. 2020-12-17T22:51:15.65 0.1 undecidable manual S 23 23.5542 108 -0.04 98
IV.MCI.EHZ. 2020-12-17T22:51:14.93 0.3 undecidable manual P 180 44.3223 97 -0.12 70
IT.SULC.HNZ. 2020-12-17T22:51:14.91 0.3 undecidable manual S 22 21.2676 111 -0.19 71
IV.MIDA.HHZ. 2020-12-17T22:51:14.91 0.1 positive manual P 127 45.7209 97 -0.36 89
IV.GUAR.HHZ. 2020-12-17T22:51:14.50 0.1 undecidable manual P 256 42.7239 97 -0.32 89
IV.POFI.HHZ. 2020-12-17T22:51:14.96 0.3 undecidable manual S 204 20.9679 111 -0.06 73
IV.PTQR.HHZ. 2020-12-17T22:51:13.85 0.1 positive manual P 293 37.0296 99 -0.1 94
IT.OPI.HGZ. 2020-12-17T22:51:13.18 0.1 undecidable manual S 174 12.6762 130 0.05 99
IV.LRP.EHZ. 2020-12-17T22:51:13.19 0.1 positive manual P 215 32.8449 101 -0.12 95
IV.RNI2.HHZ. 2020-12-17T22:51:13.85 0.1 positive manual P 126 34.8429 100 0.24 92
IV.INTR.HNZ. 2020-12-17T22:51:13.59 0.3 undecidable manual S 29 15.3735 122 -0.11 73
IV.LPEL.HHZ. 2020-12-17T22:51:13.29 0.1 positive manual P 60 35.1426 100 -0.36 90
IV.T0110.HHN. 2020-12-17T22:51:13.90 0.1 negative manual P 355 37.7289 99 -0.16 93
IV.VVLD.HNZ. 2020-12-17T22:51:13.96 0.3 undecidable manual S 262 15.873 121 0.15 73
IV.CERA.HHZ. 2020-12-17T22:51:13.60 0.1 undecidable manual P 152 36.6411 99 -0.28 92
IV.VVLD.HNZ. 2020-12-17T22:51:11.00 0.1 positive manual P 262 15.873 121 0.16 97
IT.SULP.HGZ. 2020-12-17T22:51:11.73 0.1 positive manual P 23 23.5542 108 -0.19 95
IV.POFI.HHZ. 2020-12-17T22:51:11.55 0.1 positive manual P 204 20.9679 111 0.01 99
IT.SULC.HNZ. 2020-12-17T22:51:11.55 0.3 undecidable manual P 22 21.2676 111 -0.03 74
IT.SULA.HNZ. 2020-12-17T22:51:11.65 0.1 undecidable manual P 23 22.0668 110 -0.05 98
IT.OPI.HGZ. 2020-12-17T22:51:10.50 0.1 negative manual P 174 12.6762 130 0.06 99
IV.INTR.HNZ. 2020-12-17T22:51:10.78 0.1 positive manual P 29 15.3735 122 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.INTR.HHE. ML:2.6 0.0034449999999999997 0.54 AML other m 2020-12-17T22:51:13.69
IV.INTR.HNE. ML:2.6 0.0032 0.54 AML other m 2020-12-17T22:51:13.69
IV.VVLD.HHE. ML:2.4 0.0020350000000000004 0.72 AML other m 2020-12-17T22:51:14.04
IV.VVLD.HNE. ML:2.4 0.0018800000000000002 0.72 AML other m 2020-12-17T22:51:14.05
IV.INTR.HNN. ML:2.5 0.0025800000000000003 0.26 AML other m 2020-12-17T22:51:14.18
IV.INTR.HHN. ML:2.6 0.002785 0.26 AML other m 2020-12-17T22:51:14.18
IV.VVLD.HHN. ML:2.4 0.00214 0.4 AML other m 2020-12-17T22:51:14.15
IV.VVLD.HNN. ML:2.4 0.002 0.4 AML other m 2020-12-17T22:51:14.15
IV.POFI.HHN. ML:2.0 0.0005489999999999999 0.18 AML other m 2020-12-17T22:51:15.77
IV.POFI.HNN. ML:2.0 0.000631 0.18 AML other m 2020-12-17T22:51:15.78
IV.POFI.HHE. ML:2.0 0.0006875 0.42 AML other m 2020-12-17T22:51:16.01
IV.POFI.HNE. ML:2.1 0.0007785 0.42 AML other m 2020-12-17T22:51:16.02
IV.LRP.EHE. ML:2.1 0.0005110000000000001 0.38 AML other m 2020-12-17T22:51:18.54
IV.LPEL.HNN. ML:2.1 0.0005255 0.82 AML other m 2020-12-17T22:51:19.45
IV.LPEL.HHN. ML:2.1 0.000544 0.82 AML other m 2020-12-17T22:51:19.45
IV.LRP.EHN. ML:1.6 0.0001525 0.82 AML other m 2020-12-17T22:51:19.25
IV.CERA.HHN. ML:1.9 0.000265 0.22 AML other m 2020-12-17T22:51:20.21
IV.PTQR.HHE. ML:1.6 0.000141 0.44 AML other m 2020-12-17T22:51:20.18
IV.LPEL.HHE. ML:2.4 0.000885 0.46 AML other m 2020-12-17T22:51:20.83
IV.LPEL.HNE. ML:2.3 0.0007395 0.46 AML other m 2020-12-17T22:51:20.83
IV.RNI2.HNE. ML:2.1 0.0005325 0.16 AML other m 2020-12-17T22:51:20.82
IV.RNI2.HHE. ML:2.2 0.0005574999999999999 0.16 AML other m 2020-12-17T22:51:20.82
IV.CERA.HNN. ML:1.9 0.0003005 0.96 AML other m 2020-12-17T22:51:21.16
IV.RNI2.HHN. ML:2.0 0.0003915 0.48 AML other m 2020-12-17T22:51:21.57
IV.RNI2.HNN. ML:2.0 0.000379 0.48 AML other m 2020-12-17T22:51:21.57
IV.MIDA.HNN. ML:2.0 0.00028349999999999995 1.2 AML other m 2020-12-17T22:51:22.31
IV.MIDA.HHE. ML:2.1 0.00033499999999999996 1.2 AML other m 2020-12-17T22:51:22.31
IV.MIDA.HNE. ML:2.0 0.00028100000000000005 0.92 AML other m 2020-12-17T22:51:22.33
IV.PTQR.HHN. ML:1.6 0.00014800000000000002 1.58 AML other m 2020-12-17T22:51:23.00
IV.MIDA.HHN. ML:2.0 0.0002985 0.16 AML other m 2020-12-17T22:51:23.16
IV.CERA.HHE. ML:1.8 0.00020400000000000003 0.62 AML other m 2020-12-17T22:51:23.83
IV.CERA.HNE. ML:1.8 0.00023999999999999998 0.62 AML other m 2020-12-17T22:51:23.83
IV.MCI.EHN. ML:2.0 0.00027 0.28 AML other m 2020-12-17T22:51:23.61
IV.GUAR.HHE. ML:1.8 0.00019800000000000002 1.04 AML other m 2020-12-17T22:51:24.20
IV.GUAR.HHN. ML:2.1 0.00036899999999999997 0.4 AML other m 2020-12-17T22:51:25.23
IV.VCEL.EHN. ML:2.1 0.0002965 0.44 AML other m 2020-12-17T22:51:25.56
IV.MCI.EHE. ML:2.1 0.00034250000000000003 0.64 AML other m 2020-12-17T22:51:25.26
IV.VCEL.EHE. ML:2.3 0.000422 0.28 AML other m 2020-12-17T22:51:25.60
IV.CRTO.HHN. ML:2.8 0.00045850000000000003 1.48 AML other m 2020-12-17T22:51:29.04
IV.GIUL.HHN. ML:1.7 0.00010025000000000001 1.4 AML other m 2020-12-17T22:51:30.86
IV.CRTO.HHE. ML:2.8 0.00046750000000000003 0.72 AML other m 2020-12-17T22:51:30.13
IV.GIUL.HHE. ML:1.6 0.00008965 1.12 AML other m 2020-12-17T22:51:31.73
IV.TERO.HHE. ML:1.5 0.000040650000000000006 0.28 AML other m 2020-12-17T22:51:33.15
IV.TRIV.HHN. ML:1.5 0.00006575 1.56 AML other m 2020-12-17T22:51:36.96
IV.TERO.HHN. ML:1.5 0.0000421 0.78 AML other m 2020-12-17T22:51:36.45
IV.TRIV.HHE. ML:1.5 0.00006515 0.38 AML other m 2020-12-17T22:51:39.43
IV.MELA.HHE. ML:1.8 0.00005885 0.78 AML other m 2020-12-17T22:51:44.88
IV.MELA.HHN. ML:1.8 0.00005945 0.62 AML other m 2020-12-17T22:51:45.32
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download