Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 19-12-2020 and time 23:27:36 (UTC) in region 2 km SE Vicovaro (RM)

A magnitude ML 1.9 earthquake occured in region: 2 km SE Vicovaro (RM), on

  • 19-12-2020 23:27:36 (UTC)
  • 20-12-2020 00:27:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0040, 12.9150 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
Vicovaro RM 2 4019 4019
Sambuci RM 3 925 4944
Saracinesco RM 3 185 5129
Mandela RM 3 917 6046
Castel Madama RM 5 7399 13445
Ciciliano RM 5 1336 14781
Roccagiovine RM 5 263 15044
San Polo dei Cavalieri RM 6 2992 18036
Anticoli Corrado RM 6 915 18951
Cineto Romano RM 7 601 19552
Roviano RM 7 1351 20903
Licenza RM 8 1011 21914
Marano Equo RM 9 779 22693
Cerreto Laziale RM 9 1118 23811
Marcellina RM 9 7280 31091
Arsoli RM 9 1586 32677
Riofreddo RM 10 781 33458
Agosta RM 10 1765 35223
Percile RM 10 255 35478
San Gregorio da Sassola RM 10 1619 37097
Gerano RM 10 1263 38360
Rocca Canterano RM 11 196 38556
Tivoli RM 11 56533 95089
Casape RM 11 744 95833
Vallinfreda RM 11 283 96116
Pisoniano RM 11 770 96886
Oricola AQ 12 1244 98130
Canterano RM 12 351 98481
Cervara di Roma RM 13 455 98936
Rocca di Botte AQ 13 856 99792
Poli RM 13 2418 102210
Vivaro Romano RM 13 182 102392
Rocca Santo Stefano RM 14 975 103367
Monteflavio RM 14 1348 104715
Palombara Sabina RM 14 13269 117984
Orvinio RI 14 405 118389
San Vito Romano RM 15 3273 121662
Guidonia Montecelio RM 16 88673 210335
Capranica Prenestina RM 16 351 210686
Camerata Nuova RM 16 447 211133
Bellegra RM 17 2887 214020
Pereto AQ 17 682 214702
Gallicano nel Lazio RM 17 6334 221036
Turania RI 17 241 221277
Sant'Angelo Romano RM 17 5018 226295
Moricone RM 17 2650 228945
Carsoli AQ 17 5396 234341
Montorio Romano RM 17 1984 236325
Castel San Pietro Romano RM 18 902 237227
Subiaco RM 18 9074 246301
Rocca di Cave RM 18 377 246678
Pozzaglia Sabina RI 18 360 247038
Palestrina RM 18 21672 268710
Collalto Sabino RI 19 442 269152
Olevano Romano RM 19 6687 275839
Scandriglia RI 19 3108 278947
Roiate RM 19 737 279684
Zagarolo RM 20 17843 297527
Genazzano RM 20 6036 303563

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)
37 Km NE of Velletri (53303 inhabitants)
38 Km E of Roma (2864731 inhabitants)
50 Km NE of Pomezia (62966 inhabitants)
51 Km NE of Aprilia (73446 inhabitants)
56 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)
66 Km NE of Anzio (54211 inhabitants)
81 Km SE of Viterbo (67173 inhabitants)
93 Km E of Civitavecchia (52991 inhabitants)
98 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
23:27:36		 42.0045 12.9152 9 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85784271
Reviewed
Rev100 		ML 1.8 2020-12-19
23:27:36		 42.0078 12.9125 10 2020-12-19
23:43:21		 Sala Sismica INGV-Roma 85559161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 23:27:36 ± 0.05
Latitude 42.0045 ± 0.0018
Longitude 12.9152 ± 0.0036
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 85784271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 236
Semi-minor axis of confidence ellipse (meter) 115
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.12950
Epicentral distance of station farthest from the epicenter (degree) 1.08368
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
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 85784271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 09:32:53

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 85559161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 23:43:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2020-12-19T23:27:59.65 0.3 undecidable manual S 359 76.2681 50 0.3 66
IV.TOLF.HHZ. 2020-12-19T23:27:59.65 0.6 undecidable manual S 275 75.6687 50 0.47 43
IV.ARRO.EHZ. 2020-12-19T23:27:56.53 1.0 undecidable manual S 349 64.8906 50 0.22 23
IV.MGAB.HHZ. 2020-12-19T23:27:56.64 1.0 undecidable manual P 327 120.2907 50 0.33 20
IV.VVLD.HHZ. 2020-12-19T23:27:55.24 0.3 undecidable manual S 104 60.2952 50 0.17 70
IV.ASSB.HHZ. 2020-12-19T23:27:55.54 0.6 undecidable manual P 350 117.0939 50 -0.27 41
IV.GIUL.HHZ. 2020-12-19T23:27:54.43 0.3 undecidable manual S 150 56.8986 50 0.26 69
IV.LATB.EHZ. 2020-12-19T23:27:53.99 0.3 undecidable manual S 176 56.7987 50 -0.14 71
IV.MOMA.HHZ. 2020-12-19T23:27:52.36 0.6 undecidable manual P 342 93.0402 50 0.24 43
IV.SRES.HHZ. 2020-12-19T23:27:50.24 0.3 undecidable manual S 308 42.1245 50 0.01 75
IV.SMA1.EHN. 2020-12-19T23:27:50.08 0.3 undecidable manual P 26 77.5668 50 0.36 65
IV.TOLF.HHZ. 2020-12-19T23:27:49.88 0.6 undecidable manual P 275 75.6687 50 0.44 43
IV.GUAR.HHZ. 2020-12-19T23:27:49.67 0.3 undecidable manual S 125 40.2264 50 -0.04 75
IV.PTQR.HHZ. 2020-12-19T23:27:49.92 0.3 undecidable manual S 87 40.0266 50 0.25 72
IV.GAVE.EHZ. 2020-12-19T23:27:49.20 0.3 undecidable manual P 359 76.2681 50 -0.33 66
IV.T1299.HNN. 2020-12-19T23:27:49.51 0.1 undecidable manual P 23 76.0683 50 0.01 94
IV.CAMP.HHE. 2020-12-19T23:27:48.96 0.3 undecidable manual P 34 71.5728 50 0.16 69
IV.CESX.HHE. 2020-12-19T23:27:48.56 0.1 undecidable manual P 338 72.1722 50 -0.34 88
IV.LNSS.HNZ. 2020-12-19T23:27:47.78 0.3 undecidable manual P 9 67.1772 50 -0.34 67
IV.VIVA.HHZ. 2020-12-19T23:27:47.40 0.6 undecidable manual S 203 30.6471 50 0.24 49
IT.MMP1.HGZ. 2020-12-19T23:27:47.25 0.6 undecidable manual S 333 30.4473 50 0.15 50
IV.ARRO.EHZ. 2020-12-19T23:27:47.66 0.6 undecidable manual P 349 64.8906 50 -0.12 47
IV.FIAM.HHZ. 2020-12-19T23:27:47.77 1.0 undecidable manual S 30 33.6441 50 -0.18 25
IV.RDP.HHZ. 2020-12-19T23:27:47.48 0.6 undecidable manual S 212 31.9458 50 -0.03 51
IV.GIUL.HHZ. 2020-12-19T23:27:46.25 0.1 undecidable manual P 150 56.8986 50 -0.29 92
IV.RMP.HHZ. 2020-12-19T23:27:46.41 0.6 undecidable manual S 219 27.5502 109 0.2 49
IV.VVLD.HHZ. 2020-12-19T23:27:46.81 0.3 undecidable manual P 104 60.2952 50 -0.25 69
MN.AQU.HNN. 2020-12-19T23:27:46.43 0.1 undecidable manual P 46 55.8996 50 0.04 97
IV.LATB.EHZ. 2020-12-19T23:27:46.19 0.3 undecidable manual P 176 56.7987 50 -0.34 68
IV.LAV9.HHZ. 2020-12-19T23:27:44.15 0.6 undecidable manual P 206 40.4262 50 0.15 49
IV.SRES.HHZ. 2020-12-19T23:27:43.92 0.6 undecidable manual P 308 42.1245 50 -0.35 47
IV.GUAR.HHZ. 2020-12-19T23:27:43.71 0.3 undecidable manual P 125 40.2264 50 -0.26 71
IV.SAMA.EHZ. 2020-12-19T23:27:43.20 1.0 undecidable manual P 227 36.4413 50 -0.19 24
IT.RMMM.HGZ. 2020-12-19T23:27:43.85 0.1 undecidable manual P 257 39.2274 50 0.04 100
IT.CSO1.HGZ. 2020-12-19T23:27:43.33 0.3 undecidable manual S 53 17.7711 118 0.23 75
IV.PTQR.HHZ. 2020-12-19T23:27:43.90 0.3 undecidable manual P 87 40.0266 50 -0.05 75
IV.FIAM.HHZ. 2020-12-19T23:27:42.70 0.3 undecidable manual P 30 33.6441 50 -0.25 72
IV.MA9.HHZ. 2020-12-19T23:27:42.91 0.6 undecidable manual P 219 33.5442 50 -0.04 50
IV.RDP.HHZ. 2020-12-19T23:27:42.72 0.3 undecidable manual P 212 31.9458 50 0.03 76
IV.VIVA.HHZ. 2020-12-19T23:27:42.95 0.6 undecidable manual P 203 30.6471 50 0.46 46
IV.RCAV.EHZ. 2020-12-19T23:27:42.99 0.6 undecidable manual S 172 17.5713 118 -0.04 52
IT.MMP1.HGZ. 2020-12-19T23:27:42.22 0.6 undecidable manual P 333 30.4473 50 -0.24 49
IV.MTCE.HHZ. 2020-12-19T23:27:41.92 0.3 undecidable manual S 278 14.3745 123 -0.15 77
IV.RMP.HHZ. 2020-12-19T23:27:41.86 0.6 undecidable manual P 219 27.5502 109 -0.09 51
IV.RCAV.EHZ. 2020-12-19T23:27:40.24 0.6 undecidable manual P 172 17.5713 118 0.13 51
IT.CSO1.HGZ. 2020-12-19T23:27:40.40 0.6 undecidable manual P 53 17.7711 118 0.25 50
IV.MTCE.HHZ. 2020-12-19T23:27:39.69 0.3 undecidable manual P 278 14.3745 123 0.13 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHN. ML:1.8 0.0006830256 0.32 AML other m 2020-12-19T23:27:43.76
IV.MTCE.HHE. ML:2.1 0.001411586 0.3456 AML other m 2020-12-19T23:27:43.77
IV.RDP.HHN. ML:2.3 0.0009167485 0.3584 AML other m 2020-12-19T23:27:50.07
IV.RMP.HHN. ML:2.4 0.001397 1.46 AML other m 2020-12-19T23:27:50.18
IV.RDP.HHE. ML:2.0 0.0004150634 0.2304 AML other m 2020-12-19T23:27:50.40
IV.RMP.HHE. ML:2.3 0.0010588400500000001 0.2688 AML other m 2020-12-19T23:27:50.50
IV.FIAM.HHN. ML:1.6 0.00016299999999999998 1.52 AML other m 2020-12-19T23:27:50.94
IV.FIAM.HNN. ML:1.9 0.0003230518 0.4352 AML other m 2020-12-19T23:27:50.97
IV.PTQR.HHN. ML:2.0 0.0003893046 0.2688 AML other m 2020-12-19T23:27:52.29
IV.PTQR.HHE. ML:2.0 0.0003720292 0.192 AML other m 2020-12-19T23:27:52.25
IV.SRES.HHE. ML:1.4 0.00008810981499999999 0.2688 AML other m 2020-12-19T23:27:52.57
IV.SRES.HHN. ML:1.4 0.000090696495 0.1792 AML other m 2020-12-19T23:27:53.20
IV.LAV9.HHN. ML:2.2 0.000566 0.44 AML other m 2020-12-19T23:27:53.34
IV.FIAM.HHE. ML:1.6 0.000161 1.24 AML other m 2020-12-19T23:27:53.95
IV.MOMA.HNN. ML:2.5 0.0003458244 1.1904 AML other m 2020-12-19T23:27:55.62
IV.LAV9.HNN. ML:2.2 0.0005625 0.28 AML other m 2020-12-19T23:27:55.61
IV.VVLD.HHN. ML:1.7 0.00011219999999999999 1.68 AML other m 2020-12-19T23:27:58.90
IV.GIUL.HHN. ML:1.6 0.00008894827 0.1792 AML other m 2020-12-19T23:27:58.12
IV.LAV9.HHE. ML:2.4 0.0009415 1.62 AML other m 2020-12-19T23:28:00.86
IV.LAV9.HNE. ML:2.4 0.0009239999999999999 1.62 AML other m 2020-12-19T23:28:00.86
IV.ARRO.EHE. ML:1.7 0.00010169237500000001 0.192 AML other m 2020-12-19T23:28:00.38
IV.GIUL.HHE. ML:1.6 0.000081166055 0.32 AML other m 2020-12-19T23:28:00.65
IV.ARRO.EHN. ML:1.7 0.00009896869999999999 0.2048 AML other m 2020-12-19T23:28:01.73
IV.GAVE.HNE. ML:2.1 0.00019451509999999998 1.5904 AML other m 2020-12-19T23:28:01.95
IV.TOLF.HHN. ML:1.7 0.000076971935 1.6032 AML other m 2020-12-19T23:28:02.04
IV.TOLF.HHE. ML:1.6 0.00006654634500000001 0.3456 AML other m 2020-12-19T23:28:03.93
IV.VVLD.HHE. ML:1.7 0.00011075 0.36 AML other m 2020-12-19T23:28:04.69
IV.GAVE.EHN. ML:2.0 0.0001431114 0.2048 AML other m 2020-12-19T23:28:05.31
IV.GAVE.EHE. ML:1.9 0.0001302857 0.2944 AML other m 2020-12-19T23:28:05.69
IV.MOMA.HNE. ML:2.0 0.00011416928000000002 0.2304 AML other m 2020-12-19T23:28:10.09
IV.MOMA.HHE. ML:1.9 0.00009283865499999999 0.2048 AML other m 2020-12-19T23:28:10.10
IV.MOMA.HHN. ML:1.9 0.00008495163 0.32 AML other m 2020-12-19T23:28:11.01
IV.ASSB.HHN. ML:1.7 0.000035861875 0.4992 AML other m 2020-12-19T23:28:15.12
IV.ASSB.HHE. ML:1.7 0.000039324385000000005 1.5392 AML other m 2020-12-19T23:28:16.94
IV.MGAB.HHN. ML:1.7 0.000032763164999999996 0.32 AML other m 2020-12-19T23:28:16.42
IV.MGAB.HHE. ML:1.9 0.000064457955 0.5248 AML other m 2020-12-19T23:28:17.08
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