Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 19-12-2020 and time 11:49:46 (Italy) in region 2 km E Vicovaro (RM)

A magnitude ML 1.8 earthquake occured in region: 2 km E Vicovaro (RM), on

  • 19-12-2020 10:49:46 (UTC)
  • 19-12-2020 11:49:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0090, 12.9140 at 10 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
Mandela RM 3 917 4936
Sambuci RM 3 925 5861
Saracinesco RM 3 185 6046
Roccagiovine RM 5 263 6309
Castel Madama RM 5 7399 13708
Ciciliano RM 6 1336 15044
San Polo dei Cavalieri RM 6 2992 18036
Cineto Romano RM 6 601 18637
Anticoli Corrado RM 6 915 19552
Roviano RM 7 1351 20903
Licenza RM 8 1011 21914
Marano Equo RM 9 779 22693
Marcellina RM 9 7280 29973
Cerreto Laziale RM 9 1118 31091
Riofreddo RM 9 781 31872
Arsoli RM 9 1586 33458
Percile RM 10 255 33713
Agosta RM 10 1765 35478
San Gregorio da Sassola RM 11 1619 37097
Gerano RM 11 1263 38360
Tivoli RM 11 56533 94893
Vallinfreda RM 11 283 95176
Rocca Canterano RM 11 196 95372
Oricola AQ 11 1244 96616
Casape RM 12 744 97360
Pisoniano RM 12 770 98130
Canterano RM 13 351 98481
Cervara di Roma RM 13 455 98936
Vivaro Romano RM 13 182 99118
Rocca di Botte AQ 13 856 99974
Monteflavio RM 13 1348 101322
Poli RM 14 2418 103740
Palombara Sabina RM 14 13269 117009
Orvinio RI 14 405 117414
Rocca Santo Stefano RM 14 975 118389
San Vito Romano RM 15 3273 121662
Guidonia Montecelio RM 16 88673 210335
Camerata Nuova RM 16 447 210782
Pereto AQ 17 682 211464
Capranica Prenestina RM 17 351 211815
Turania RI 17 241 212056
Moricone RM 17 2650 214706
Sant'Angelo Romano RM 17 5018 219724
Montorio Romano RM 17 1984 221708
Bellegra RM 17 2887 224595
Gallicano nel Lazio RM 17 6334 230929
Carsoli AQ 17 5396 236325
Pozzaglia Sabina RI 17 360 236685
Subiaco RM 18 9074 245759
Castel San Pietro Romano RM 18 902 246661
Collalto Sabino RI 18 442 247103
Rocca di Cave RM 18 377 247480
Scandriglia RI 19 3108 250588
Palestrina RM 19 21672 272260
Olevano Romano RM 19 6687 278947
Roiate RM 19 737 279684
Zagarolo RM 20 17843 297527

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)
65 Km SE of Terni (111501 inhabitants)
67 Km NE of Anzio (54211 inhabitants)
81 Km SE of Viterbo (67173 inhabitants)
93 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 1.8 2020-12-19
10:49:46		 42.0087 12.9143 10 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86171021
Reviewed
Rev100 		ML 1.8 2020-12-19
10:49:46		 42.0043 12.9098 11 2020-12-19
11:01:01		 Sala Sismica INGV-Roma 85542261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 10:49:46 ± 0.05
Latitude 42.0087 ± 0.0018
Longitude 12.9143 ± 0.0036
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86171021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 251
Semi-minor axis of confidence ellipse (meter) 169
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 39
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83727
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 86171021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 12:32:50

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 85542261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 11:01:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2020-12-19T10:51:36.36 3.0 undecidable manual Sg 10.32 0
IV.TDS.HHZ. 2020-12-19T10:51:21.98 3.0 undecidable manual Sn 0.02 0
GU.GRAM.HHZ. 2020-12-19T10:51:16.48 3.0 undecidable manual Sn 0.55 0
IV.NDIM.HHZ. 2020-12-19T10:51:15.57 3.0 undecidable manual Sn -0.15 0
ST.DOSS.HHZ. 2020-12-19T10:51:02.24 3.0 negative manual Pg 14.39 0
IV.EUCT.HNZ. 2020-12-19T10:50:58.17 3.0 negative manual Pg 8.33 0
IV.FIR.HHZ. 2020-12-19T10:50:54.70 3.0 undecidable manual Sg 5.49 0
IV.TDS.HHZ. 2020-12-19T10:50:51.03 3.0 undecidable manual Pg 11.14 0
IV.SBPO.HNZ. 2020-12-19T10:50:41.95 3.0 negative manual Pn 3.66 0
IV.SENA.HHZ. 2020-12-19T10:50:40.64 3.0 undecidable manual Pg 6.94 0
IV.BRSN.EHZ. 2020-12-19T10:50:27.80 3.0 negative manual Pg 3.44 0
IV.ATCC.EHZ. 2020-12-19T10:50:26.81 3.0 undecidable manual S 0.86 0
IV.MOMA.HHZ. 2020-12-19T10:50:13.85 0.3 undecidable manual S 342 92.6406 50 0.29 63
IV.GAVE.EHZ. 2020-12-19T10:50:09.00 0.6 undecidable manual S 359 75.8685 50 -0.09 45
IV.ARRO.EHZ. 2020-12-19T10:50:06.42 0.3 undecidable manual S 349 64.491 50 0.37 65
IV.MOMA.HHZ. 2020-12-19T10:50:01.63 0.3 undecidable manual P 342 92.6406 50 -0.35 62
IV.NRCA.HHZ. 2020-12-19T10:50:01.73 0.1 undecidable manual P 10 92.9403 50 -0.3 83
IV.PTQR.HHZ. 2020-12-19T10:49:59.81 0.6 undecidable manual S 88 40.1265 50 0.26 46
IV.TOLF.HHN. 2020-12-19T10:49:59.41 0.1 undecidable manual P 275 75.5688 50 0.06 91
IV.GAVE.EHZ. 2020-12-19T10:49:59.09 0.3 undecidable manual P 359 75.8685 50 -0.3 65
IV.SMA1.EHZ. 2020-12-19T10:49:59.91 0.3 undecidable manual P 26 77.1672 50 0.32 64
IV.BARO.HNZ. 2020-12-19T10:49:59.58 0.6 undecidable manual P 291 75.7686 50 0.19 44
IV.CESX.HHZ. 2020-12-19T10:49:58.85 0.3 undecidable manual P 338 71.7726 50 0.09 68
IV.CAMP.HHE. 2020-12-19T10:49:58.97 0.3 undecidable manual P 35 71.1732 50 0.29 65
IV.SAMA.EHE. 2020-12-19T10:49:58.77 0.6 undecidable manual S 227 36.741 50 0.12 48
IV.LRP.EHZ. 2020-12-19T10:49:58.14 0.3 undecidable manual P 126 68.5758 50 -0.13 68
IV.LNSS.HNZ. 2020-12-19T10:49:57.64 0.1 undecidable manual P 9 66.6777 50 -0.35 87
IV.VIVA.HHZ. 2020-12-19T10:49:57.00 0.3 undecidable manual S 203 31.0467 50 -0.13 73
IV.FIAM.HHZ. 2020-12-19T10:49:57.60 0.3 undecidable manual S 30 33.2445 50 -0.12 73
IV.ARRO.EHZ. 2020-12-19T10:49:57.72 0.3 undecidable manual P 349 64.491 50 0.08 69
IV.RDP.HHZ. 2020-12-19T10:49:57.61 0.3 undecidable manual S 212 32.2455 50 0.14 72
IV.VVLD.HHZ. 2020-12-19T10:49:56.81 0.3 undecidable manual P 105 60.495 50 -0.22 68
IV.GIUL.HHZ. 2020-12-19T10:49:56.39 0.3 undecidable manual P 150 57.3981 50 -0.15 69
MN.AQU.HNN. 2020-12-19T10:49:56.37 0.6 undecidable manual P 46 55.5999 50 0.09 47
IT.MMP1.HGN. 2020-12-19T10:49:56.54 0.6 undecidable manual S 333 29.9478 50 -0.31 47
IV.LATB.EHZ. 2020-12-19T10:49:56.22 0.3 undecidable manual P 176 57.1983 50 -0.31 67
IV.SRES.HHZ. 2020-12-19T10:49:54.00 0.1 undecidable manual P 307 41.8248 50 -0.15 95
IV.GUAR.HHZ. 2020-12-19T10:49:53.89 0.3 undecidable manual P 126 40.5261 50 -0.07 72
IV.RCAV.EHZ. 2020-12-19T10:49:53.10 0.3 undecidable manual S 172 18.0708 119 -0.22 73
IV.PTQR.HHZ. 2020-12-19T10:49:53.92 0.1 undecidable manual P 88 40.1265 50 0.04 97
IT.CSO1.HGN. 2020-12-19T10:49:53.30 0.3 undecidable manual S 54 17.5713 120 0.13 74
IV.SAMA.EHE. 2020-12-19T10:49:53.49 0.3 undecidable manual P 227 36.741 50 0.12 72
IV.MTCE.HHZ. 2020-12-19T10:49:52.00 0.3 undecidable manual S 276 14.2746 125 -0.19 74
IT.MMP1.HGN. 2020-12-19T10:49:52.20 0.3 undecidable manual P 333 29.9478 50 -0.13 73
IV.RDP.HHZ. 2020-12-19T10:49:52.77 0.3 undecidable manual P 212 32.2455 50 0.09 73
IV.VIVA.HHZ. 2020-12-19T10:49:52.64 0.3 undecidable manual P 203 31.0467 50 0.15 72
IV.RMP.HHZ. 2020-12-19T10:49:52.32 0.3 undecidable manual P 218 27.8499 50 0.32 70
IV.FIAM.HHZ. 2020-12-19T10:49:52.85 0.3 undecidable manual P 30 33.2445 50 0.02 74
IV.RCAV.EHZ. 2020-12-19T10:49:50.49 0.3 undecidable manual P 172 18.0708 119 0.2 73
IT.CSO1.HGN. 2020-12-19T10:49:50.39 0.3 undecidable manual P 54 17.5713 120 0.19 74
IV.MTCE.HHZ. 2020-12-19T10:49:49.76 0.1 undecidable manual P 276 14.2746 125 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:2.2 0.0014881705 0.3584 AML other m 2020-12-19T10:49:52.31
IV.MTCE.HHN. ML:1.8 0.00066886675 0.3584 AML other m 2020-12-19T10:49:52.35
IV.RCAV.EHE. ML:2.2 0.0011758855 0.2816 AML other m 2020-12-19T10:49:55.09
IV.RCAV.EHN. ML:2.0 0.00081212985 0.2048 AML other m 2020-12-19T10:49:55.58
IV.FIAM.HHN. ML:1.5 0.00014880825 0.3776 AML other m 2020-12-19T10:49:59.30
IV.FIAM.HNN. ML:1.8 0.00028585739999999996 0.3648 AML other m 2020-12-19T10:49:59.68
IV.VIVA.HHE. ML:2.2 0.0008413946 0.1408 AML other m 2020-12-19T10:50:00.32
IV.VIVA.HHN. ML:2.4 0.001181198 0.3584 AML other m 2020-12-19T10:50:01.29
IV.FIAM.HHE. ML:1.5 0.00013450000000000002 0.66 AML other m 2020-12-19T10:50:01.77
IV.GUAR.HHE. ML:2.0 0.00034927535 1.68 AML other m 2020-12-19T10:50:01.86
IV.LATB.EHN. ML:1.1 0.000027131585 0.4608 AML other m 2020-12-19T10:50:04.59
IV.GUAR.HHN. ML:1.9 0.0002950777 0.3584 AML other m 2020-12-19T10:50:05.06
IV.LATB.EHE. ML:1.2 0.000035228696999999995 0.3776 AML other m 2020-12-19T10:50:07.48
IV.LRP.EHN. ML:1.2 0.0000235 0.74 AML other m 2020-12-19T10:50:09.74
IV.ARRO.EHN. ML:1.8 0.00010742429500000001 0.1984 AML other m 2020-12-19T10:50:09.52
IV.ARRO.EHE. ML:1.8 0.00010667034 0.2816 AML other m 2020-12-19T10:50:09.74
IV.GAVE.HNE. ML:2.1 0.00020543405000000002 0.5056 AML other m 2020-12-19T10:50:10.08
IV.GIUL.HHN. ML:1.6 0.0000823 1.14 AML other m 2020-12-19T10:50:10.20
IV.GAVE.EHN. ML:2.1 0.0001771887 0.3392 AML other m 2020-12-19T10:50:10.78
IV.GIUL.HHE. ML:1.5 0.00007705 1.6 AML other m 2020-12-19T10:50:11.97
IV.VVLD.HNE. ML:1.8 0.00011640954 0.4352 AML other m 2020-12-19T10:50:11.85
IV.LRP.EHE. ML:1.8 0.000101260655 0.1792 AML other m 2020-12-19T10:50:12.13
IV.VVLD.HNN. ML:1.9 0.00016062575 0.4096 AML other m 2020-12-19T10:50:12.85
IV.VVLD.HHN. ML:1.9 0.0001493448 0.4032 AML other m 2020-12-19T10:50:12.85
IV.VVLD.HHE. ML:1.6 0.0000868 0.38 AML other m 2020-12-19T10:50:13.31
IV.GAVE.EHE. ML:1.9 0.00012804605 0.3008 AML other m 2020-12-19T10:50:13.66
IV.MOMA.HHE. ML:1.9 0.000085443345 0.3392 AML other m 2020-12-19T10:50:15.64
IV.SMA1.EHN. ML:1.8 0.000092952555 1.6608 AML other m 2020-12-19T10:50:17.10
IV.MOMA.HHN. ML:1.9 0.000087649615 0.2176 AML other m 2020-12-19T10:50:19.47
IV.SMA1.EHE. ML:2.0 0.00015641135 0.4608 AML other m 2020-12-19T10:50:20.53
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