Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 19-12-2020 and time 22:54:20 (UTC) in region 3 km E Vicovaro (RM)

A magnitude ML 1.9 earthquake occured in region: 3 km E Vicovaro (RM), on

  • 19-12-2020 22:54:20 (UTC)
  • 19-12-2020 23:54:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0080, 12.9220 at 9 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
Saracinesco RM 3 185 185
Vicovaro RM 3 4019 4204
Sambuci RM 3 925 5129
Mandela RM 3 917 6046
Roccagiovine RM 5 263 6309
Ciciliano RM 5 1336 7645
Castel Madama RM 6 7399 15044
Anticoli Corrado RM 6 915 15959
Cineto Romano RM 6 601 16560
Roviano RM 7 1351 17911
San Polo dei Cavalieri RM 7 2992 20903
Licenza RM 8 1011 21914
Marano Equo RM 8 779 22693
Cerreto Laziale RM 9 1118 23811
Arsoli RM 9 1586 25397
Riofreddo RM 9 781 26178
Agosta RM 10 1765 27943
Marcellina RM 10 7280 35223
Percile RM 10 255 35478
Gerano RM 10 1263 36741
Rocca Canterano RM 10 196 36937
Vallinfreda RM 11 283 37220
San Gregorio da Sassola RM 11 1619 38839
Oricola AQ 11 1244 40083
Tivoli RM 11 56533 96616
Pisoniano RM 11 770 97386
Casape RM 12 744 98130
Canterano RM 12 351 98481
Cervara di Roma RM 12 455 98936
Rocca di Botte AQ 12 856 99792
Vivaro Romano RM 13 182 99974
Poli RM 14 2418 102392
Rocca Santo Stefano RM 14 975 103367
Monteflavio RM 14 1348 104715
Orvinio RI 14 405 105120
Palombara Sabina RM 15 13269 118389
San Vito Romano RM 15 3273 121662
Camerata Nuova RM 16 447 122109
Pereto AQ 16 682 122791
Guidonia Montecelio RM 16 88673 211464
Turania RI 16 241 211705
Capranica Prenestina RM 16 351 212056
Bellegra RM 17 2887 214943
Carsoli AQ 17 5396 220339
Moricone RM 17 2650 222989
Gallicano nel Lazio RM 17 6334 229323
Montorio Romano RM 17 1984 231307
Subiaco RM 17 9074 240381
Sant'Angelo Romano RM 17 5018 245399
Pozzaglia Sabina RI 17 360 245759
Collalto Sabino RI 18 442 246201
Rocca di Cave RM 18 377 246578
Castel San Pietro Romano RM 18 902 247480
Olevano Romano RM 19 6687 254167
Palestrina RM 19 21672 275839
Scandriglia RI 19 3108 278947
Roiate RM 19 737 279684
Genazzano RM 20 6036 285720
Zagarolo RM 20 17843 303563
Affile RM 20 1548 305111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Tivoli (56533 inhabitants)
16 Km E of Guidonia Montecelio (88673 inhabitants)
38 Km NE of Velletri (53303 inhabitants)
38 Km E of Roma (2864731 inhabitants)
51 Km NE of Pomezia (62966 inhabitants)
51 Km NE of Aprilia (73446 inhabitants)
55 Km SW of L'Aquila (69753 inhabitants)
60 Km N of Latina (125985 inhabitants)
62 Km E of Fiumicino (78395 inhabitants)
66 Km SE of Terni (111501 inhabitants)
67 Km NE of Anzio (54211 inhabitants)
81 Km SE of Viterbo (67173 inhabitants)
94 Km E of Civitavecchia (52991 inhabitants)
97 Km SW of Teramo (54892 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 1.9 2020-12-19
22:54:20		 42.0078 12.9218 9 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85785241
Reviewed
Rev100 		ML 1.9 2020-12-19
22:54:20		 42.0127 12.9257 9 2020-12-19
23:01:52		 Sala Sismica INGV-Roma 85558441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 22:54:20 ± 0.04
Latitude 42.0078 ± 0.0018
Longitude 12.9218 ± 0.0024
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85785241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 226
Semi-minor axis of confidence ellipse (meter) 63
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 110
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.05221
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 85785241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 10:07:29

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 85558441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 23:01:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGG.HHZ. 2020-12-19T22:55:02.64 3.0 undecidable manual S 0.47 0
IV.GAVE.EHZ. 2020-12-19T22:54:43.87 0.6 undecidable manual S 358 75.9684 50 0.39 42
IV.CESX.HHE. 2020-12-19T22:54:42.63 0.3 undecidable manual S 338 72.0723 50 0.19 67
IV.ARRO.EHZ. 2020-12-19T22:54:40.62 0.3 undecidable manual S 349 64.6908 50 0.15 68
IV.ASSB.HHZ. 2020-12-19T22:54:39.68 0.3 undecidable manual P 349 116.7942 50 -0.32 59
IV.VVLD.HHZ. 2020-12-19T22:54:38.91 0.3 undecidable manual S 105 59.8956 50 -0.28 67
IV.LATB.EHZ. 2020-12-19T22:54:38.24 0.3 undecidable manual S 177 57.0984 50 -0.2 68
IV.GIUL.HHZ. 2020-12-19T22:54:38.11 0.6 undecidable manual S 151 56.9985 50 -0.3 45
IV.MOMA.HHZ. 2020-12-19T22:54:35.98 0.6 undecidable manual P 342 92.9403 50 -0.34 41
IV.LAV9.HHZ. 2020-12-19T22:54:34.22 0.3 undecidable manual S 207 41.0256 50 0.08 72
IV.GUAR.HHZ. 2020-12-19T22:54:34.25 0.3 undecidable manual S 126 40.0266 50 0.37 68
IV.SMA1.EHN. 2020-12-19T22:54:34.05 0.6 undecidable manual P 26 76.9674 50 0.19 44
IV.SRES.HHZ. 2020-12-19T22:54:34.63 0.3 undecidable manual S 307 42.3243 50 0.12 71
IV.INTR.HHZ. 2020-12-19T22:54:34.55 0.3 undecidable manual P 89 80.9523 50 0.06 67
IV.SAMA.EHZ. 2020-12-19T22:54:33.40 0.3 undecidable manual S 227 37.1295 50 0.29 70
IV.GAVE.EHZ. 2020-12-19T22:54:33.47 0.3 undecidable manual P 358 75.9684 50 -0.24 65
IV.PTQR.HHZ. 2020-12-19T22:54:33.88 0.6 undecidable manual S 88 39.5271 50 0.14 48
IV.T1299.HNN. 2020-12-19T22:54:33.88 0.1 undecidable manual P 23 75.4689 50 0.24 87
IV.FIAM.HHZ. 2020-12-19T22:54:32.07 0.3 undecidable manual S 29 33.0447 50 0.05 74
IV.CESX.HHE. 2020-12-19T22:54:32.93 0.6 undecidable manual P 338 72.0723 50 -0.18 44
IV.LNSS.HNE. 2020-12-19T22:54:32.05 0.3 undecidable manual P 8 66.6777 50 -0.24 67
IV.MA9.HHZ. 2020-12-19T22:54:32.32 0.6 undecidable manual S 220 34.1436 50 -0.01 49
IV.CAMP.HHE. 2020-12-19T22:54:32.87 0.1 undecidable manual P 34 70.8735 50 -0.06 91
IV.RDP.HHZ. 2020-12-19T22:54:31.87 0.6 undecidable manual S 213 32.5452 50 -0.02 49
IV.VIVA.HHZ. 2020-12-19T22:54:31.47 0.6 undecidable manual S 204 31.2465 50 -0.06 49
IT.MMP1.HGE. 2020-12-19T22:54:31.23 0.3 undecidable manual S 332 30.3474 50 -0.08 74
IV.ARRO.EHZ. 2020-12-19T22:54:31.78 0.6 undecidable manual P 349 64.6908 50 -0.19 45
IV.VVLD.HHZ. 2020-12-19T22:54:30.97 0.1 undecidable manual P 105 59.8956 50 -0.26 90
IV.RMP.HHZ. 2020-12-19T22:54:30.71 0.3 undecidable manual S 220 28.1496 108 0.06 74
MN.AQU.HNN. 2020-12-19T22:54:30.77 0.6 undecidable manual P 46 55.2003 50 0.26 45
IV.LATB.EHZ. 2020-12-19T22:54:30.52 0.3 undecidable manual P 177 57.0984 50 -0.28 67
IV.GIUL.HHZ. 2020-12-19T22:54:30.50 0.6 undecidable manual P 151 56.9985 50 -0.28 45
IV.PTQR.HHZ. 2020-12-19T22:54:28.27 0.3 undecidable manual P 88 39.5271 50 0.19 71
IT.RMMM.HGZ. 2020-12-19T22:54:28.23 0.1 undecidable manual P 257 39.8268 50 0.09 96
IV.LAV9.HHZ. 2020-12-19T22:54:28.58 0.3 undecidable manual P 207 41.0256 50 0.26 70
IV.GUAR.HHZ. 2020-12-19T22:54:28.00 0.1 undecidable manual P 126 40.0266 50 -0.16 95
IV.SRES.HHZ. 2020-12-19T22:54:28.19 0.3 undecidable manual P 307 42.3243 50 -0.34 68
IV.RDP.HHZ. 2020-12-19T22:54:27.31 0.1 undecidable manual P 213 32.5452 50 0.3 93
IV.RCAV.EHZ. 2020-12-19T22:54:27.21 0.3 undecidable manual S 174 17.871 118 -0.16 74
IV.FIAM.HHZ. 2020-12-19T22:54:27.05 0.1 undecidable manual P 29 33.0447 50 -0.05 98
IV.SAMA.EHZ. 2020-12-19T22:54:27.62 0.6 undecidable manual P 227 37.1295 50 -0.1 48
IV.MA9.HHZ. 2020-12-19T22:54:27.39 0.3 undecidable manual P 220 34.1436 50 0.12 72
IT.CSO1.HGZ. 2020-12-19T22:54:27.36 0.3 undecidable manual S 53 17.1717 119 0.23 73
IV.MTCE.HHZ. 2020-12-19T22:54:26.22 0.3 undecidable manual S 276 14.874 122 -0.24 73
IV.VIVA.HHZ. 2020-12-19T22:54:26.96 0.1 undecidable manual P 204 31.2465 50 0.15 96
IT.MMP1.HGE. 2020-12-19T22:54:26.39 0.3 undecidable manual P 332 30.3474 50 -0.29 70
IV.RMP.HHZ. 2020-12-19T22:54:26.25 0.3 undecidable manual P 220 28.1496 108 -0.05 74
IT.CSO1.HGZ. 2020-12-19T22:54:24.37 0.1 undecidable manual P 53 17.1717 119 0.1 100
IV.MTCE.HHZ. 2020-12-19T22:54:24.02 0.1 positive manual P 276 14.874 122 0.14 99
IV.RCAV.EHZ. 2020-12-19T22:54:24.62 0.3 undecidable manual P 174 17.871 118 0.21 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:2.0 0.0010799743 0.3584 AML other m 2020-12-19T22:54:26.49
IV.MTCE.HHN. ML:1.8 0.0006998975999999999 0.3968 AML other m 2020-12-19T22:54:26.34
IV.RCAV.EHN. ML:2.0 0.0007758573 0.2432 AML other m 2020-12-19T22:54:28.34
IV.RCAV.EHE. ML:2.1 0.0010816534 0.3456 AML other m 2020-12-19T22:54:29.34
IV.FIAM.HNE. ML:2.7 0.002280622 0.5856 AML other m 2020-12-19T22:54:30.56
IV.RMP.HHE. ML:2.3 0.00101 0.3 AML other m 2020-12-19T22:54:32.81
IV.PTQR.HHE. ML:1.7 0.00017658315 0.32 AML other m 2020-12-19T22:54:34.92
IV.PTQR.HHN. ML:1.9 0.00029365805 1.68 AML other m 2020-12-19T22:54:34.94
IV.RMP.HHN. ML:2.3 0.001105 0.32 AML other m 2020-12-19T22:54:35.66
IV.FIAM.HHN. ML:1.5 0.00013022505 0.3584 AML other m 2020-12-19T22:54:35.72
IV.SRES.HHE. ML:1.5 0.00009314219 0.2944 AML other m 2020-12-19T22:54:36.07
IV.SRES.HHN. ML:1.5 0.00009945793999999999 1.5008 AML other m 2020-12-19T22:54:37.78
IV.FIAM.HNN. ML:1.8 0.00027774444999999995 0.704 AML other m 2020-12-19T22:54:37.50
IV.FIAM.HHE. ML:1.4 0.0001154555 0.9216 AML other m 2020-12-19T22:54:37.52
IV.LAV9.HNN. ML:2.2 0.0006079394 0.3072 AML other m 2020-12-19T22:54:37.66
IV.LAV9.HHN. ML:2.2 0.0005818079 0.3072 AML other m 2020-12-19T22:54:37.66
IV.GAVE.HNE. ML:2.0 0.00015833155 0.9248 AML other m 2020-12-19T22:54:37.72
IV.GIUL.HHN. ML:1.5 0.00006958437 0.2304 AML other m 2020-12-19T22:54:41.63
IV.GIUL.HHE. ML:1.4 0.00006117622 0.2176 AML other m 2020-12-19T22:54:41.79
IV.LAV9.HNE. ML:2.4 0.000779713 0.32 AML other m 2020-12-19T22:54:44.01
IV.LAV9.HHE. ML:2.4 0.0008204731000000001 0.32 AML other m 2020-12-19T22:54:44.17
IV.ARRO.EHN. ML:1.5 0.00006605815 0.2176 AML other m 2020-12-19T22:54:44.47
IV.GAVE.EHE. ML:1.9 0.000110451515 0.3328 AML other m 2020-12-19T22:54:44.72
IV.GAVE.EHN. ML:2.0 0.00013652530000000002 0.3584 AML other m 2020-12-19T22:54:44.77
IV.ARRO.EHE. ML:1.5 0.000066632915 1.424 AML other m 2020-12-19T22:54:46.04
IV.MOMA.HNN. ML:2.2 0.00019685835000000002 0.9312 AML other m 2020-12-19T22:54:47.64
IV.GAVE.HNN. ML:2.2 0.00022726635 0.2976 AML other m 2020-12-19T22:54:48.38
IV.MOMA.HNE. ML:2.3 0.0002421353 1.1136 AML other m 2020-12-19T22:54:50.01
IV.INTR.HHE. ML:1.7 0.00006337430500000001 0.4096 AML other m 2020-12-19T22:54:51.40
IV.MOMA.HHN. ML:1.7 0.00006123196 0.2432 AML other m 2020-12-19T22:54:51.67
IV.MOMA.HHE. ML:1.7 0.000058127575 0.2048 AML other m 2020-12-19T22:54:52.86
IV.INTR.HHN. ML:1.8 0.00008359331999999999 1.3984 AML other m 2020-12-19T22:54:57.79
IV.INTR.HNN. ML:2.0 0.00015023266000000003 0.9696 AML other m 2020-12-19T22:54:58.47
IV.INTR.HNE. ML:2.2 0.00018850745 0.0864 AML other m 2020-12-19T22:54:59.61
IV.ASSB.HHE. ML:1.7 0.000041831885 0.5504 AML other m 2020-12-19T22:55:02.90
IV.ASSB.HHN. ML:1.6 0.000032185030000000007 1.0016 AML other m 2020-12-19T22:55:03.60
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