Earthquake with magnitude of ML 1.3 on date 23-12-2020 and time 05:50:22 (Italy) in region 1 km E Villa Santa Lucia (FR)

A magnitude ML 1.3 earthquake occured in region: 1 km E Villa Santa Lucia (FR), on

  • 23-12-2020 04:50:22 (UTC)
  • 23-12-2020 05:50:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.51, 13.78 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villa Santa Lucia FR 1 2632 2632
Piedimonte San Germano FR 3 6535 9167
Cassino FR 5 36142 45309
Terelle FR 5 422 45731
Aquino FR 6 5370 51101
Castrocielo FR 7 3965 55066
Sant'Elia Fiumerapido FR 8 6166 61232
Belmonte Castello FR 8 739 61971
Pignataro Interamna FR 8 2595 64566
Colle San Magno FR 8 699 65265
Roccasecca FR 10 7365 72630
Pontecorvo FR 11 13242 85872
Cervaro FR 11 8109 93981
San Giorgio a Liri FR 12 3164 97145
Vallerotonda FR 12 1581 98726
Atina FR 12 4316 103042
Villa Latina FR 13 1241 104283
Sant'Apollinare FR 13 1919 106202
Casalattico FR 13 574 106776
San Vittore del Lazio FR 14 2636 109412
Casalvieri FR 15 2698 112110
Castelnuovo Parano FR 15 883 112993
Acquafondata FR 15 263 113256
Colfelice FR 15 1932 115188
Sant'Ambrogio sul Garigliano FR 15 966 116154
Santopadre FR 16 1357 117511
Esperia FR 16 3828 121339
Viticuso FR 16 353 121692
Rocca d'Evandro CE 16 3283 124975
Vallemaio FR 16 937 125912
Gallinaro FR 17 1269 127181
San Pietro Infine CE 17 944 128125
Picinisco FR 17 1218 129343
Sant'Andrea del Garigliano FR 17 1505 130848
San Biagio Saracinisco FR 17 349 131197
Ausonia FR 18 2619 133816
Coreno Ausonio FR 18 1644 135460
Rocca d'Arce FR 18 959 136419
San Giovanni Incarico FR 18 3336 139755
Settefrati FR 19 728 140483
Arce FR 19 5756 146239
Conca Casale IS 19 200 146439
Vicalvi FR 19 783 147222
Pico FR 19 2888 150110
Fontechiari FR 20 1303 151413
Alvito FR 20 2713 154126

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km NW of Caserta (76326 inhabitants)
70 Km NW of Aversa (53047 inhabitants)
73 Km E of Latina (125985 inhabitants)
74 Km NW of Giugliano in Campania (122974 inhabitants)
76 Km NW of Marano di Napoli (59874 inhabitants)
78 Km NW of Pozzuoli (81661 inhabitants)
79 Km NW of Afragola (65057 inhabitants)
80 Km NW of Casoria (77642 inhabitants)
80 Km NW of Acerra (59573 inhabitants)
84 Km NW of Napoli (974074 inhabitants)
86 Km E of Velletri (53303 inhabitants)
90 Km NW of Portici (55274 inhabitants)
91 Km NW of Ercolano (53709 inhabitants)
94 Km W of Benevento (60091 inhabitants)
94 Km NW of Torre del Greco (86275 inhabitants)
94 Km E of Aprilia (73446 inhabitants)
96 Km SE of Tivoli (56533 inhabitants)
96 Km E of Anzio (54211 inhabitants)
99 Km SE of L'Aquila (69753 inhabitants)
99 Km SW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-12-23
04:50:22
41.51 13.78 9 2020-12-23
05:02:00
Sala Sismica INGV-Roma 85642441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-23 04:50:22 ± 0.17
Latitude 41.51 ± 0.01
Longitude 13.78 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85642441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1113
Semi-minor axis of confidence ellipse (meter) 369
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 197
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 85642441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-23 05:02:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RDP.HHZ. 2020-12-23T04:50:37.91 3.0 positive manual P 0.14 0
IV.MIDA.HHZ. 2020-12-23T04:50:36.90 0.6 undecidable manual S 70 0.3786 50 0.64 42
IV.VVLD.HHZ. 2020-12-23T04:50:35.70 0.6 undecidable manual S 342 0.3759 50 -0.49 45
IV.POFI.HHZ. 2020-12-23T04:50:31.06 0.6 undecidable manual S 346 0.2122 110 0.28 48
IV.MIDA.HHZ. 2020-12-23T04:50:30.18 0.3 undecidable manual P 70 0.3786 50 -0.09 73
IV.LRP.EHZ. 2020-12-23T04:50:30.14 0.3 undecidable manual S 313 0.1979 112 -0.12 75
IV.VVLD.HHZ. 2020-12-23T04:50:29.86 0.3 undecidable manual P 342 0.3759 50 -0.37 69
IV.CERA.HHZ. 2020-12-23T04:50:29.83 0.6 undecidable manual S 64 0.1988 112 -0.49 46
IV.LIK.EHZ.01 2020-12-23T04:50:29.10 0.6 undecidable manual S 266 0.1646 116 0 52
IV.CERA.HHZ. 2020-12-23T04:50:27.19 0.3 undecidable manual P 64 0.1988 112 0.35 71
IV.POFI.HHZ. 2020-12-23T04:50:27.71 0.6 undecidable manual P 346 0.2122 110 0.61 44
IV.LIK.EHZ.01 2020-12-23T04:50:26.69 0.6 undecidable manual P 266 0.1646 116 0.56 45
IV.LRP.EHZ. 2020-12-23T04:50:26.78 0.3 undecidable manual P 313 0.1979 112 -0.02 77
IV.MCI.EHZ. 2020-12-23T04:50:25.32 0.3 undecidable manual S 128 0.0333 157 -0.05 79
IV.MCI.EHZ. 2020-12-23T04:50:23.70 0.1 positive manual P 128 0.0333 157 -0.28 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCI.EHE. ML:2.8 0.01077 0.22 AML other m 2020-12-23T04:50:25.73
IV.MCI.EHN. ML:2.5 0.005815 0.76 AML other m 2020-12-23T04:50:26.59
IV.POFI.HHE. ML:1.2 9.85E-5 1.44 AML other m 2020-12-23T04:50:31.77
IV.LRP.EHE. ML:1.5 0.000211 0.88 AML other m 2020-12-23T04:50:32.29
IV.POFI.HHN. ML:1 5.795E-5 0.94 AML other m 2020-12-23T04:50:33.36
IV.CERA.HHE. ML:1.5 0.0002375 1.44 AML other m 2020-12-23T04:50:34.75
IV.CERA.HNE. ML:1.6 0.000243 1.42 AML other m 2020-12-23T04:50:34.75
IV.LRP.EHN. ML:1.1 8.42E-5 0.88 AML other m 2020-12-23T04:50:34.08
IV.CERA.HHN. ML:1.6 0.000298 1.22 AML other m 2020-12-23T04:50:34.06
IV.CERA.HNN. ML:1.6 0.000299 1.2 AML other m 2020-12-23T04:50:34.07
IV.VVLD.HHN. ML:1.3 7.035E-5 0.78 AML other m 2020-12-23T04:50:37.49
IV.VVLD.HHE. ML:1.2 5.345E-5 0.62 AML other m 2020-12-23T04:50:40.59
IV.RDP.HHN. ML:2.2 0.0001875 0.66 AML other m 2020-12-23T04:50:41.54
IV.RDP.HHE. ML:2.2 0.0001715 1.48 AML other m 2020-12-23T04:50:42.92
IV.MIDA.HHE. ML:1.1 4.36E-5 1.14 AML other m 2020-12-23T04:50:44.66
IV.MIDA.HHN. ML:1.1 4.44E-5 0.78 AML other m 2020-12-23T04:50:52.21
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download