Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 16-12-2020 and time 08:28:41 (Italy) in region 2 km SE Vicovaro (RM)

A magnitude ML 1.7 earthquake occured in region: 2 km SE Vicovaro (RM), on

  • 16-12-2020 07:28:41 (UTC)
  • 16-12-2020 08:28:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0030, 12.9080 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
Sambuci RM 3 925 4944
Mandela RM 4 917 5861
Saracinesco RM 4 185 6046
Castel Madama RM 4 7399 13445
Ciciliano RM 5 1336 14781
Roccagiovine RM 5 263 15044
San Polo dei Cavalieri RM 6 2992 18036
Anticoli Corrado RM 7 915 18951
Cineto Romano RM 7 601 19552
Roviano RM 8 1351 20903
Licenza RM 8 1011 21914
Marcellina RM 9 7280 29194
Cerreto Laziale RM 9 1118 30312
Marano Equo RM 9 779 31091
San Gregorio da Sassola RM 10 1619 32710
Arsoli RM 10 1586 34296
Tivoli RM 10 56533 90829
Riofreddo RM 10 781 91610
Percile RM 10 255 91865
Gerano RM 11 1263 93128
Agosta RM 11 1765 94893
Casape RM 11 744 95637
Rocca Canterano RM 11 196 95833
Pisoniano RM 11 770 96603
Vallinfreda RM 12 283 96886
Oricola AQ 12 1244 98130
Canterano RM 13 351 98481
Poli RM 13 2418 100899
Cervara di Roma RM 13 455 101354
Monteflavio RM 14 1348 102702
Rocca di Botte AQ 14 856 103558
Vivaro Romano RM 14 182 103740
Palombara Sabina RM 14 13269 117009
Rocca Santo Stefano RM 14 975 117984
Orvinio RI 15 405 118389
San Vito Romano RM 15 3273 121662
Guidonia Montecelio RM 15 88673 210335
Capranica Prenestina RM 16 351 210686
Gallicano nel Lazio RM 16 6334 217020
Sant'Angelo Romano RM 16 5018 222038
Camerata Nuova RM 17 447 222485
Bellegra RM 17 2887 225372
Moricone RM 17 2650 228022
Pereto AQ 17 682 228704
Montorio Romano RM 17 1984 230688
Turania RI 17 241 230929
Castel San Pietro Romano RM 17 902 231831
Rocca di Cave RM 18 377 232208
Carsoli AQ 18 5396 237604
Subiaco RM 18 9074 246678
Palestrina RM 18 21672 268350
Pozzaglia Sabina RI 18 360 268710
Olevano Romano RM 19 6687 275397
Collalto Sabino RI 19 442 275839
Scandriglia RI 19 3108 278947
Zagarolo RM 19 17843 296790
Roiate RM 19 737 297527
Genazzano RM 20 6036 303563

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km E of Tivoli (56533 inhabitants)
15 Km E of Guidonia Montecelio (88673 inhabitants)
37 Km N of Velletri (53303 inhabitants)
37 Km E of Roma (2864731 inhabitants)
50 Km NE of Pomezia (62966 inhabitants)
50 Km NE of Aprilia (73446 inhabitants)
56 Km SW of L'Aquila (69753 inhabitants)
59 Km N of Latina (125985 inhabitants)
61 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 1.7 2020-12-16
07:28:41		 42.0032 12.908 10 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85647131
Reviewed
Rev100 		ML 1.8 2020-12-16
07:28:41		 42.0055 12.9157 9 2020-12-16
07:39:00		 Sala Sismica INGV-Roma 85464301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-16 07:28:41 ± 0.05
Latitude 42.0032 ± 0.0027
Longitude 12.9080 ± 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 85647131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 27
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) 0.83817
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 85647131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-23 18:13:17

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 85464301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-16 07:39:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CADC.HNZ. 2020-12-16T07:30:34.77 3.0 undecidable manual Sn 4.75 0
XK.GIZZ.HHZ. 2020-12-16T07:30:26.29 3.0 undecidable manual Sn -1.97 0
IV.SERM.EHZ. 2020-12-16T07:30:11.69 3.0 undecidable manual Sn 0.56 0
IV.ISPIC.HNZ. 2020-12-16T07:30:11.68 3.0 undecidable manual Pg 9.31 0
IV.SARZ.HHZ. 2020-12-16T07:29:50.94 3.0 undecidable manual Pn 7.15 0
XK.GIZZ.HHZ. 2020-12-16T07:29:46.71 3.0 positive manual Pn 5.19 0
IV.VENL.HNZ. 2020-12-16T07:29:39.04 3.0 negative manual Pn 4.38 0
IV.PLMA.HHZ. 2020-12-16T07:29:37.21 3.0 undecidable manual Pg 7.8 0
IV.ACER.HHZ. 2020-12-16T07:29:29.69 3.0 negative manual Pg 6.75 0
IV.MAGO.CHZ. 2020-12-16T07:29:23.93 3.0 positive manual Pg 7.44 0
IV.RNI2.HHZ. 2020-12-16T07:29:13.57 3.0 undecidable manual S -1.58 0
IV.VVLD.HHZ. 2020-12-16T07:29:00.61 0.6 undecidable manual S 104 60.8946 50 0.05 46
IV.GIUL.HHZ. 2020-12-16T07:28:59.82 0.6 undecidable manual S 150 57.0984 50 0.27 44
IV.MOMA.HHZ. 2020-12-16T07:28:57.59 0.1 undecidable manual P 343 93.0402 50 0.1 85
IV.LAV9.HNZ. 2020-12-16T07:28:55.24 0.3 undecidable manual S 206 40.0266 50 0.25 69
IV.PTQR.HHZ. 2020-12-16T07:28:55.32 0.3 undecidable manual S 87 40.626 50 0.16 70
IV.GUAR.HHZ. 2020-12-16T07:28:55.35 0.6 undecidable manual S 125 40.626 50 0.19 46
IV.SRES.HHZ. 2020-12-16T07:28:55.05 0.6 undecidable manual S 309 41.7249 50 -0.41 44
IV.RDP.HHZ. 2020-12-16T07:28:53.21 0.6 undecidable manual S 211 31.5462 50 0.49 44
IV.ARRO.EHZ. 2020-12-16T07:28:53.17 0.3 undecidable manual P 350 64.9905 50 0.01 69
IV.LNSS.HNZ. 2020-12-16T07:28:53.15 0.3 undecidable manual P 9 67.377 50 -0.39 63
IV.VIVA.HHZ. 2020-12-16T07:28:52.36 0.3 undecidable manual S 202 30.2475 50 -0.03 73
IV.VVLD.HHZ. 2020-12-16T07:28:52.29 0.1 undecidable manual P 104 60.8946 50 -0.24 88
IT.MMP1.HGZ. 2020-12-16T07:28:52.56 0.3 undecidable manual S 334 30.2475 50 0.17 71
IV.GIUL.HHZ. 2020-12-16T07:28:51.67 0.3 undecidable manual P 150 57.0984 50 -0.28 66
IV.SRES.HHZ. 2020-12-16T07:28:49.52 0.3 undecidable manual P 309 41.7249 50 -0.07 71
IV.PTQR.HHZ. 2020-12-16T07:28:49.35 0.1 undecidable manual P 87 40.626 50 -0.07 95
IV.GUAR.HHZ. 2020-12-16T07:28:49.22 0.3 undecidable manual P 125 40.626 50 -0.19 69
IT.CSO1.HGZ. 2020-12-16T07:28:48.88 0.3 undecidable manual S 54 18.3705 118 0.1 73
IV.LAV9.HNZ. 2020-12-16T07:28:48.95 0.3 undecidable manual P 206 40.0266 50 -0.37 67
IV.RCAV.EHZ. 2020-12-16T07:28:48.23 0.6 undecidable manual S 170 17.5713 119 -0.31 47
IV.RDP.HHZ. 2020-12-16T07:28:48.08 0.3 undecidable manual P 211 31.5462 50 0.08 72
IV.MTCE.HHZ. 2020-12-16T07:28:47.41 0.1 undecidable manual S 279 13.875 125 -0.03 100
IV.VIVA.HHZ. 2020-12-16T07:28:47.73 0.3 undecidable manual P 202 30.2475 50 -0.09 72
IT.MMP1.HGZ. 2020-12-16T07:28:47.97 0.3 undecidable manual P 334 30.2475 50 0.15 71
IV.RCAV.EHZ. 2020-12-16T07:28:45.68 0.1 undecidable manual P 170 17.5713 119 0.09 98
IT.CSO1.HGZ. 2020-12-16T07:28:45.96 0.3 undecidable manual P 54 18.3705 118 0.23 71
IV.MTCE.HHZ. 2020-12-16T07:28:45.12 0.1 positive manual P 279 13.875 125 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:2.0 0.00107139045 0.3008 AML other m 2020-12-16T07:28:47.69
IV.MTCE.HHN. ML:1.9 0.0007754999999999999 0.26 AML other m 2020-12-16T07:28:47.70
IV.RCAV.EHE. ML:1.8 0.00052218625 0.224 AML other m 2020-12-16T07:28:48.81
IV.RCAV.EHN. ML:1.9 0.00061954155 0.6848 AML other m 2020-12-16T07:28:48.00
IV.SRES.HHE. ML:1.3 0.00006138519 0.48 AML other m 2020-12-16T07:28:55.31
IV.GUAR.HHN. ML:1.6 0.00013231645 0.4224 AML other m 2020-12-16T07:28:55.76
IV.SRES.HHN. ML:1.2 0.000052673659999999994 0.7424 AML other m 2020-12-16T07:28:56.19
IV.PTQR.HHN. ML:1.9 0.0002879112 0.3392 AML other m 2020-12-16T07:28:55.91
IV.PTQR.HHE. ML:1.9 0.00029548895 0.2624 AML other m 2020-12-16T07:28:55.92
IV.GUAR.HHE. ML:1.7 0.00016589605000000003 0.1408 AML other m 2020-12-16T07:28:56.01
IV.VVLD.HHE. ML:1.5 0.00006897398 0.2368 AML other m 2020-12-16T07:29:00.80
IV.VVLD.HHN. ML:1.5 0.00006803911 0.2176 AML other m 2020-12-16T07:29:00.86
IV.GIUL.HHN. ML:1.4 0.00005078444 0.2368 AML other m 2020-12-16T07:29:00.84
IV.GIUL.HHE. ML:1.5 0.000070176035 0.3648 AML other m 2020-12-16T07:29:01.04
IV.VVLD.HNN. ML:1.9 0.00014840810499999998 0.7104 AML other m 2020-12-16T07:29:01.54
IV.MOMA.HHE. ML:1.9 0.00009017151 0.7424 AML other m 2020-12-16T07:29:11.02
IV.MOMA.HHN. ML:1.8 0.000064569745 0.704 AML other m 2020-12-16T07:29:11.08
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