Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-12-2020 and time 02:43:14 (UTC) in region 2 km SE Vicovaro (RM)

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

  • 20-12-2020 02:43:14 (UTC)
  • 20-12-2020 03:43:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0040, 12.9060 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
Roccagiovine RM 5 263 13708
San Polo dei Cavalieri RM 6 2992 16700
Ciciliano RM 6 1336 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 8 7280 29194
Cerreto Laziale RM 9 1118 30312
Marano Equo RM 9 779 31091
San Gregorio da Sassola RM 10 1619 32710
Tivoli RM 10 56533 89243
Riofreddo RM 10 781 90024
Arsoli RM 10 1586 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 12 770 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 14 455 101354
Palombara Sabina RM 14 13269 114623
Monteflavio RM 14 1348 115971
Rocca di Botte AQ 14 856 116827
Vivaro Romano RM 14 182 117009
Rocca Santo Stefano RM 14 975 117984
Orvinio RI 15 405 118389
Guidonia Montecelio RM 15 88673 207062
San Vito Romano RM 15 3273 210335
Capranica Prenestina RM 16 351 210686
Sant'Angelo Romano RM 16 5018 215704
Gallicano nel Lazio RM 16 6334 222038
Moricone RM 17 2650 224688
Camerata Nuova RM 17 447 225135
Montorio Romano RM 17 1984 227119
Bellegra RM 17 2887 230006
Turania RI 17 241 230247
Pereto AQ 17 682 230929
Castel San Pietro Romano RM 18 902 231831
Rocca di Cave RM 18 377 232208
Carsoli AQ 18 5396 237604
Pozzaglia Sabina RI 18 360 237964
Palestrina RM 18 21672 259636
Subiaco RM 18 9074 268710
Scandriglia RI 19 3108 271818
Collalto Sabino RI 19 442 272260
Olevano Romano RM 19 6687 278947
Zagarolo RM 19 17843 296790
Roiate RM 20 737 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)
60 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)
80 Km SE of Viterbo (67173 inhabitants)
92 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 2020-12-20
02:43:14		 42.0042 12.9062 10 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86773011
Reviewed
Rev100 		ML 1.7 2020-12-20
02:43:14		 42.0057 12.9257 8 2020-12-20
02:52:58		 Sala Sismica INGV-Roma 85564061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-20 02:43:14 ± 0.08
Latitude 42.0042 ± 0.0036
Longitude 12.9062 ± 0.0048
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86773011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 207
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) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 33
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.00005
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 86773011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-16 09:40:49

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 85564061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-20 02:52:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.MNT3.HHZ.02 2020-12-20T02:44:15.43 3.0 undecidable manual Sg 2 0
IV.GAVE.EHZ. 2020-12-20T02:43:38.32 0.6 undecidable manual S 359 76.368 50 0.32 43
IV.CESX.HHZ. 2020-12-20T02:43:38.18 0.6 undecidable manual S 339 71.9724 50 1.35 28
IV.LRP.EHZ. 2020-12-20T02:43:36.40 0.3 undecidable manual S 125 68.7756 50 0.42 64
IV.VVLD.HHZ. 2020-12-20T02:43:33.80 0.6 undecidable manual S 104 60.9945 50 -0.11 46
IV.CESI.HHZ. 2020-12-20T02:43:33.61 0.3 undecidable manual P 360 111 50 0.04 63
IV.GIUL.HHZ. 2020-12-20T02:43:32.70 0.6 undecidable manual S 150 57.1983 50 -0.2 45
IV.MOMA.HHZ. 2020-12-20T02:43:30.76 0.1 positive manual P 343 92.9403 50 -0.01 88
IV.INTR.HHZ. 2020-12-20T02:43:29.00 0.1 undecidable manual P 89 82.251 50 -0.14 88
IV.T1299.HNN. 2020-12-20T02:43:29.04 0.3 undecidable manual P 24 76.368 50 0.81 54
IV.SMA1.EHN. 2020-12-20T02:43:29.45 0.3 undecidable manual P 27 77.8665 50 0.99 50
IV.PTQR.HHZ. 2020-12-20T02:43:28.70 0.3 undecidable manual S 87 40.8258 50 0.19 70
IV.CAMP.HHE. 2020-12-20T02:43:28.06 0.6 undecidable manual P 35 71.9724 50 0.51 41
IV.GUAR.HNN. 2020-12-20T02:43:28.45 0.6 undecidable manual S 125 40.8258 50 -0.06 48
IV.T0110.HHZ. 2020-12-20T02:43:27.73 0.6 undecidable manual P 70 75.8685 50 -0.41 42
IV.GAVE.EHZ. 2020-12-20T02:43:27.91 0.1 positive manual P 359 76.368 50 -0.31 86
IV.CESX.HHZ. 2020-12-20T02:43:27.52 0.3 undecidable manual P 339 71.9724 50 -0.03 69
IV.ARRO.EHZ. 2020-12-20T02:43:26.42 0.6 undecidable manual P 350 64.7907 50 -0.03 46
IV.LRP.EHZ. 2020-12-20T02:43:26.72 0.3 undecidable manual P 125 68.7756 50 -0.34 65
IV.LNSS.HNZ. 2020-12-20T02:43:26.37 0.3 undecidable manual P 9 67.2771 50 -0.46 63
IV.FIAM.HHZ. 2020-12-20T02:43:26.30 0.3 undecidable manual S 31 34.0437 50 -0.4 68
IV.VVLD.HHZ. 2020-12-20T02:43:25.44 0.1 positive manual P 104 60.9945 50 -0.42 86
IV.RMP.HHZ. 2020-12-20T02:43:25.00 0.3 undecidable manual S 218 27.0507 50 0.17 72
IV.RDP.HHZ. 2020-12-20T02:43:25.55 0.6 undecidable manual S 211 31.5462 50 -0.48 45
MN.AQU.HNN. 2020-12-20T02:43:25.54 0.3 undecidable manual P 46 56.499 50 0.38 66
IT.MMP1.HGE. 2020-12-20T02:43:25.45 0.6 undecidable manual S 335 30.1476 50 -0.21 48
IV.GIUL.HHZ. 2020-12-20T02:43:24.92 0.1 positive manual P 150 57.1983 50 -0.36 88
IV.LAV9.HNZ. 2020-12-20T02:43:23.00 0.3 undecidable manual P 205 40.0266 50 0.37 68
IV.SAMA.EHZ. 2020-12-20T02:43:22.24 0.3 undecidable manual P 226 35.8419 50 0.25 70
IV.GUAR.HNN. 2020-12-20T02:43:22.59 0.3 undecidable manual P 125 40.8258 50 -0.16 71
IT.CSO1.HGZ. 2020-12-20T02:43:22.28 0.1 undecidable manual S 54 18.4704 118 0.18 98
IV.SRES.HHZ. 2020-12-20T02:43:22.44 0.3 undecidable manual P 309 41.625 50 -0.43 67
IV.PTQR.HHZ. 2020-12-20T02:43:22.53 0.1 positive manual P 87 40.8258 50 -0.21 93
IV.VIVA.HHN. 2020-12-20T02:43:21.77 0.6 undecidable manual P 202 30.3474 50 0.64 42
IV.RDP.HHZ. 2020-12-20T02:43:21.81 0.3 undecidable manual P 211 31.5462 50 0.5 67
IV.MA9.HHN. 2020-12-20T02:43:21.79 0.6 undecidable manual P 218 33.0447 50 0.24 47
IV.RCAV.EHZ. 2020-12-20T02:43:21.84 0.6 undecidable manual S 169 17.6712 119 -0.04 50
IV.FIAM.HHZ. 2020-12-20T02:43:21.56 0.1 undecidable manual P 31 34.0437 50 -0.14 96
IT.RMMM.HGE. 2020-12-20T02:43:21.74 0.6 undecidable manual P 257 38.4282 50 -0.65 42
IV.RMP.HHZ. 2020-12-20T02:43:20.80 0.3 undecidable manual P 218 27.0507 50 0.18 72
IT.MMP1.HGE. 2020-12-20T02:43:20.56 0.3 undecidable manual P 335 30.1476 50 -0.54 66
IV.MTCE.HHZ. 2020-12-20T02:43:20.40 0.3 undecidable manual S 279 13.6752 125 -0.3 72
IT.CSO1.HGZ. 2020-12-20T02:43:19.12 0.3 undecidable manual P 54 18.4704 118 0.08 75
IV.RCAV.EHZ. 2020-12-20T02:43:19.00 0.3 undecidable manual P 169 17.6712 119 0.08 75
IV.MTCE.HHZ. 2020-12-20T02:43:18.34 0.1 positive manual P 279 13.6752 125 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:1.8 0.0006933660000000001 0.28 AML other m 2020-12-20T02:43:21.24
IV.MTCE.HHN. ML:1.6 0.00043225075 0.2 AML other m 2020-12-20T02:43:21.23
IV.FIAM.HNE. ML:2.8 0.0024217040000000002 0.52 AML other m 2020-12-20T02:43:25.37
IV.RMP.HHE. ML:2.1 0.0007881538500000001 1.7008 AML other m 2020-12-20T02:43:26.11
IV.FIAM.HHN. ML:1.4 0.00009734395500000001 0.4 AML other m 2020-12-20T02:43:27.76
IV.RMP.HHN. ML:2.1 0.0007891877 0.36 AML other m 2020-12-20T02:43:28.87
IV.PTQR.HHE. ML:1.7 0.00016262645 0.2 AML other m 2020-12-20T02:43:29.27
IV.PTQR.HHN. ML:1.7 0.00015775624999999998 0.2608 AML other m 2020-12-20T02:43:29.18
IV.VVLD.HNE. ML:1.8 0.0001340698 0.8896 AML other m 2020-12-20T02:43:29.51
IV.FIAM.HNN. ML:1.7 0.00020778420000000002 0.3696 AML other m 2020-12-20T02:43:29.98
IV.SRES.HHN. ML:1.3 0.000069110595 0.2384 AML other m 2020-12-20T02:43:30.28
IV.FIAM.HHE. ML:1.3 0.000082833305 0.48 AML other m 2020-12-20T02:43:30.42
IV.GAVE.HNE. ML:2.0 0.00013791634999999998 0.6096 AML other m 2020-12-20T02:43:31.26
IV.RDP.HHE. ML:1.8 0.0002559519 0.4 AML other m 2020-12-20T02:43:31.79
IV.SRES.HHE. ML:1.3 0.000062585225 0.3808 AML other m 2020-12-20T02:43:31.70
IV.RDP.HHN. ML:2.0 0.00042996855 0.44 AML other m 2020-12-20T02:43:32.82
IV.VVLD.HNN. ML:1.8 0.000115029095 1.2992 AML other m 2020-12-20T02:43:33.94
IV.GIUL.HHN. ML:1.3 0.00004458471 0.24 AML other m 2020-12-20T02:43:34.67
IV.GIUL.HHE. ML:1.2 0.00003277872 0.32 AML other m 2020-12-20T02:43:37.70
IV.VVLD.HHE. ML:1.4 0.000050905320000000003 0.2208 AML other m 2020-12-20T02:43:37.84
IV.CESX.HHE. ML:1.5 0.000049787785000000004 0.3792 AML other m 2020-12-20T02:43:38.77
IV.GAVE.EHN. ML:1.7 0.00007320703000000001 0.36 AML other m 2020-12-20T02:43:39.25
IV.LRP.EHE. ML:1.5 0.000054899975 0.2592 AML other m 2020-12-20T02:43:39.74
IV.CESX.HHN. ML:1.4 0.000045246395 1.6608 AML other m 2020-12-20T02:43:39.84
IV.MOMA.HNN. ML:2.1 0.000134457575 1.2304 AML other m 2020-12-20T02:43:40.74
IV.LRP.EHN. ML:0.8 0.00001248059 0.3008 AML other m 2020-12-20T02:43:40.92
IV.GAVE.EHE. ML:1.7 0.00007598199999999999 1.8608 AML other m 2020-12-20T02:43:41.05
IV.VVLD.HHN. ML:1.6 0.00007656512 0.3808 AML other m 2020-12-20T02:43:41.46
IV.GAVE.HNN. ML:2.2 0.00020849105 0.9104 AML other m 2020-12-20T02:43:43.63
IV.MOMA.HHE. ML:1.6 0.00004243149 0.3792 AML other m 2020-12-20T02:43:44.28
IV.INTR.HHE. ML:1.5 0.00004273408 0.4416 AML other m 2020-12-20T02:43:45.84
IV.INTR.HHN. ML:1.7 0.000066744915 0.4592 AML other m 2020-12-20T02:43:46.57
IV.CESI.HNE. ML:2.3 0.00016293735 1.08 AML other m 2020-12-20T02:43:46.68
IV.MOMA.HNE. ML:2.0 0.00011799105999999999 1.1184 AML other m 2020-12-20T02:43:47.43
IV.MOMA.HHN. ML:1.6 0.000043813055 0.32 AML other m 2020-12-20T02:43:48.07
IV.INTR.HNN. ML:2.0 0.00012475021999999998 0.8112 AML other m 2020-12-20T02:43:48.24
IV.CESI.HHN. ML:1.7 0.00004336446 0.32 AML other m 2020-12-20T02:43:49.80
IV.CESI.HHE. ML:1.6 0.00003300886 0.7408 AML other m 2020-12-20T02:43:55.57
IV.INTR.HNE. ML:2.2 0.00018258485 0.9488 AML other m 2020-12-20T02:43:55.72
IV.CESI.HNN. ML:2.2 0.00014962015000000002 0.6096 AML other m 2020-12-20T02:43:57.77
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