Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 17-12-2020 and time 23:43:44 (Italy) in region 2 km W Saracinesco (RM)

A magnitude ML 2.2 earthquake occured in region: 2 km W Saracinesco (RM), on

  • 17-12-2020 22:43:44 (UTC)
  • 17-12-2020 23:43:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0060, 12.9280 at 8 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 2 185 185
Sambuci RM 2 925 1110
Mandela RM 3 917 2027
Vicovaro RM 3 4019 6046
Ciciliano RM 5 1336 7382
Anticoli Corrado RM 5 915 8297
Roccagiovine RM 6 263 8560
Castel Madama RM 6 7399 15959
Cineto Romano RM 6 601 16560
Roviano RM 6 1351 17911
San Polo dei Cavalieri RM 7 2992 20903
Marano Equo RM 8 779 21682
Licenza RM 8 1011 22693
Cerreto Laziale RM 8 1118 23811
Arsoli RM 9 1586 25397
Riofreddo RM 9 781 26178
Agosta RM 9 1765 27943
Gerano RM 10 1263 29206
Rocca Canterano RM 10 196 29402
Percile RM 10 255 29657
Marcellina RM 10 7280 36937
Vallinfreda RM 11 283 37220
Oricola AQ 11 1244 38464
San Gregorio da Sassola RM 11 1619 40083
Pisoniano RM 11 770 40853
Casape RM 11 744 41597
Canterano RM 12 351 41948
Tivoli RM 12 56533 98481
Cervara di Roma RM 12 455 98936
Rocca di Botte AQ 12 856 99792
Vivaro Romano RM 13 182 99974
Rocca Santo Stefano RM 13 975 100949
Poli RM 13 2418 103367
Orvinio RI 14 405 103772
Monteflavio RM 14 1348 105120
San Vito Romano RM 14 3273 108393
Palombara Sabina RM 15 13269 121662
Camerata Nuova RM 15 447 122109
Pereto AQ 16 682 122791
Capranica Prenestina RM 16 351 123142
Bellegra RM 16 2887 126029
Turania RI 16 241 126270
Carsoli AQ 16 5396 131666
Guidonia Montecelio RM 17 88673 220339
Subiaco RM 17 9074 229413
Gallicano nel Lazio RM 17 6334 235747
Pozzaglia Sabina RI 18 360 236107
Moricone RM 18 2650 238757
Rocca di Cave RM 18 377 239134
Collalto Sabino RI 18 442 239576
Montorio Romano RM 18 1984 241560
Castel San Pietro Romano RM 18 902 242462
Sant'Angelo Romano RM 18 5018 247480
Olevano Romano RM 18 6687 254167
Roiate RM 19 737 254904
Palestrina RM 19 21672 276576
Scandriglia RI 19 3108 279684
Affile RM 19 1548 281232
Genazzano RM 20 6036 287268
Zagarolo RM 20 17843 305111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Tivoli (56533 inhabitants)
17 Km E of Guidonia Montecelio (88673 inhabitants)
38 Km NE of Velletri (53303 inhabitants)
39 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)
63 Km E of Fiumicino (78395 inhabitants)
66 Km SE of Terni (111501 inhabitants)
67 Km NE of Anzio (54211 inhabitants)
82 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 2.2 2020-12-17
22:43:44		 42.0058 12.9277 8 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86169811
Reviewed
Rev100 		ML 2.2 2020-12-17
22:43:44		 42.0107 12.9232 9 2020-12-17
22:53:53		 Sala Sismica INGV-Roma 85502931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-17 22:43:44 ± 0.07
Latitude 42.0058 ± 0.0036
Longitude 12.9277 ± 0.0048
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86169811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 356
Semi-minor axis of confidence ellipse (meter) 278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.08728
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 54
Type of magnitude ML
Reference to an origin 86169811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 11:27:30

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 56
Type of magnitude ML
Reference to an origin 85502931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-17 22:53:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2020-12-17T22:44:49.89 3.0 undecidable manual Sn 2.53 0
IV.CESI.HHZ. 2020-12-17T22:44:18.97 0.6 undecidable manual S 359 110.8002 50 2.01 16
IV.MOMA.HHZ. 2020-12-17T22:44:13.26 0.6 undecidable manual S 342 93.24 50 0.99 32
IV.BSSO.HHZ. 2020-12-17T22:44:09.17 3.0 undecidable manual P 1.02 0
IV.GAVE.EHZ. 2020-12-17T22:44:08.12 0.3 undecidable manual S 358 76.1682 50 0.41 62
IV.CESX.HHZ. 2020-12-17T22:44:08.13 0.6 undecidable manual S 337 72.4719 50 1.41 27
IV.LRP.EHZ. 2020-12-17T22:44:06.09 0.3 undecidable manual S 126 67.4769 50 0.71 57
IV.LNSS.HHZ. 2020-12-17T22:44:06.11 0.6 undecidable manual S 8 66.8775 50 0.89 35
IV.ARRO.EHZ. 2020-12-17T22:44:05.21 0.6 undecidable manual S 348 64.9905 50 0.49 41
IV.MGAB.HHZ. 2020-12-17T22:44:04.75 0.3 undecidable manual P 327 120.6903 50 0.08 61
IV.FDMO.HHZ. 2020-12-17T22:44:04.21 0.6 undecidable manual P 6 115.0959 50 0.41 38
IV.VVLD.HHZ. 2020-12-17T22:44:03.53 0.6 undecidable manual S 105 59.3961 50 0.31 43
IV.ASSB.HHZ. 2020-12-17T22:44:03.85 0.1 undecidable manual P 349 117.0939 50 -0.26 78
IV.CESI.HHZ. 2020-12-17T22:44:02.98 0.3 undecidable manual P 359 110.8002 50 -0.17 61
IV.LATB.EHZ. 2020-12-17T22:44:02.27 0.3 undecidable manual S 177 56.8986 50 -0.28 66
IV.CERA.HHZ. 2020-12-17T22:44:01.23 0.3 undecidable manual P 116 100.9212 50 -0.39 59
IV.MOMA.HHZ. 2020-12-17T22:44:00.24 0.1 positive manual P 342 93.24 50 -0.19 83
IV.MCI.EHZ. 2020-12-17T22:44:00.30 0.1 undecidable manual P 128 92.9403 50 -0.09 85
IV.INTR.HHZ. 2020-12-17T22:43:58.29 0.1 undecidable manual P 89 80.5638 50 -0.19 86
IV.SRES.HHZ. 2020-12-17T22:43:58.96 0.3 undecidable manual S 307 42.9237 50 0.14 70
IV.T0110.HHZ. 2020-12-17T22:43:58.13 0.1 undecidable manual P 70 74.0703 50 0.64 77
IV.TOLF.HHZ. 2020-12-17T22:43:58.25 0.1 undecidable manual P 275 76.6677 50 0.36 83
IV.SAMA.EHZ. 2020-12-17T22:43:57.80 0.3 undecidable manual S 228 37.3293 50 0.47 66
IV.PTQR.HHZ. 2020-12-17T22:43:57.91 0.6 undecidable manual S 87 39.0276 50 0.12 47
IV.GAVE.EHZ. 2020-12-17T22:43:57.31 0.1 positive manual P 358 76.1682 50 -0.5 81
IV.GUAR.HHZ. 2020-12-17T22:43:57.99 0.6 undecidable manual S 126 39.4272 50 0.08 47
IV.LRP.EHZ. 2020-12-17T22:43:56.28 0.1 negative manual P 126 67.4769 50 -0.18 88
IV.CESX.HHZ. 2020-12-17T22:43:56.96 0.1 positive manual P 337 72.4719 50 -0.27 85
IV.RDP.HHZ. 2020-12-17T22:43:56.14 0.6 undecidable manual S 213 32.6451 104 0.19 47
IV.POFI.HHZ. 2020-12-17T22:43:56.81 0.1 undecidable manual P 116 72.2721 50 -0.39 83
IV.MA9.HHZ. 2020-12-17T22:43:56.78 0.3 undecidable manual S 220 34.3434 103 0.25 69
IV.FIAM.HHZ. 2020-12-17T22:43:55.84 0.3 undecidable manual S 28 33.0447 104 -0.24 69
IV.VIVA.HHZ. 2020-12-17T22:43:55.96 0.6 undecidable manual S 205 31.2465 105 0.49 44
IV.LNSS.HHZ. 2020-12-17T22:43:55.92 0.1 positive manual P 8 66.8775 50 -0.45 83
IT.MMP1.HGE. 2020-12-17T22:43:55.07 0.6 undecidable manual S 331 30.747 105 -0.26 46
IV.ARRO.EHZ. 2020-12-17T22:43:55.78 0.1 undecidable manual P 348 64.9905 50 -0.3 86
IV.VVLD.HHZ. 2020-12-17T22:43:54.95 0.1 positive manual P 105 59.3961 50 -0.26 88
IV.LATB.EHZ. 2020-12-17T22:43:54.27 0.1 undecidable manual P 177 56.8986 50 -0.56 82
IV.RMP.HHZ. 2020-12-17T22:43:54.71 0.6 undecidable manual S 221 28.2495 106 0.2 47
IV.GIUL.HHZ. 2020-12-17T22:43:54.42 0.1 positive manual P 151 56.499 50 -0.36 86
IV.LAV9.HHZ. 2020-12-17T22:43:52.24 0.1 undecidable manual P 208 41.0256 50 -0.14 93
IT.RMMM.HGE. 2020-12-17T22:43:52.16 3.0 undecidable manual P -0.04 0
IV.SRES.HHZ. 2020-12-17T22:43:52.02 0.1 positive manual P 307 42.9237 50 -0.65 81
IV.RCAV.EHZ. 2020-12-17T22:43:51.13 0.6 undecidable manual S 175 17.6712 115 0.1 49
IV.MA9.HHZ. 2020-12-17T22:43:51.66 0.1 undecidable manual P 220 34.3434 103 0.31 91
IV.GUAR.HHZ. 2020-12-17T22:43:51.91 0.1 positive manual P 126 39.4272 50 -0.24 91
IT.CSO1.HGZ. 2020-12-17T22:43:51.46 0.3 undecidable manual S 51 16.872 116 0.66 63
IV.SAMA.EHZ. 2020-12-17T22:43:51.73 0.3 undecidable manual P 228 37.3293 50 -0.09 71
IV.PTQR.HHZ. 2020-12-17T22:43:51.98 0.1 positive manual P 87 39.0276 50 -0.1 94
IV.RDP.HHZ. 2020-12-17T22:43:51.00 0.1 positive manual P 213 32.6451 104 -0.02 97
IV.RMP.HHZ. 2020-12-17T22:43:50.28 0.1 positive manual P 221 28.2495 106 0.1 96
IV.FIAM.HHZ. 2020-12-17T22:43:50.91 0.1 negative manual P 28 33.0447 104 -0.19 93
IV.VIVA.HHZ. 2020-12-17T22:43:50.97 0.3 undecidable manual P 205 31.2465 105 0.22 70
IV.MTCE.HHZ. 2020-12-17T22:43:50.08 0.1 undecidable manual S 277 15.3735 118 -0.26 95
IT.MMP1.HGE. 2020-12-17T22:43:50.11 0.1 undecidable manual P 331 30.747 105 -0.55 86
IV.RCAV.EHZ. 2020-12-17T22:43:48.53 0.3 undecidable manual P 175 17.6712 115 0.35 70
IT.CSO1.HGZ. 2020-12-17T22:43:48.56 0.1 undecidable manual P 51 16.872 116 0.52 89
IV.MTCE.HHZ. 2020-12-17T22:43:47.78 0.1 positive manual P 277 15.3735 118 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:2.5 0.0028899999999999998 1 AML other m 2020-12-17T22:43:50.72
IV.MTCE.HHN. ML:2.2 0.00146 1.42 AML other m 2020-12-17T22:43:50.81
IV.RMP.HHE. ML:2.7 0.0024950000000000003 0.32 AML other m 2020-12-17T22:43:56.44
IV.FIAM.HHN. ML:2.0 0.000433 0.4 AML other m 2020-12-17T22:43:57.19
IV.VIVA.HHN. ML:2.6 0.0018849999999999997 0.62 AML other m 2020-12-17T22:43:57.93
IV.PTQR.HHE. ML:2.2 0.000641 0.2 AML other m 2020-12-17T22:43:58.65
IV.PTQR.HHN. ML:2.2 0.0005560000000000001 0.32 AML other m 2020-12-17T22:43:58.65
IV.RDP.HHE. ML:2.4 0.00123 0.38 AML other m 2020-12-17T22:43:58.84
IV.GUAR.HHE. ML:2.4 0.0009485000000000001 0.56 AML other m 2020-12-17T22:43:58.54
IV.RDP.HHN. ML:2.6 0.001665 0.64 AML other m 2020-12-17T22:43:58.94
IV.SRES.HHN. ML:1.9 0.000245 0.5 AML other m 2020-12-17T22:43:59.54
IV.VIVA.HHE. ML:2.6 0.0021000000000000003 1.2 AML other m 2020-12-17T22:44:00.29
IV.FIAM.HHE. ML:1.9 0.00031800000000000003 1.02 AML other m 2020-12-17T22:44:01.18
IV.RMP.HHN. ML:2.7 0.002785 0.34 AML other m 2020-12-17T22:44:01.61
IV.GUAR.HHN. ML:2.2 0.000603 0.34 AML other m 2020-12-17T22:44:03.39
IV.GIUL.HHN. ML:1.9 0.000188 0.26 AML other m 2020-12-17T22:44:04.34
IV.VVLD.HHN. ML:2.1 0.00028849999999999997 0.94 AML other m 2020-12-17T22:44:04.78
IV.SRES.HHE. ML:1.9 0.000242 0.96 AML other m 2020-12-17T22:44:04.85
IV.ARRO.EHE. ML:2.0 0.00020600000000000002 1.1 AML other m 2020-12-17T22:44:06.61
IV.VVLD.HHE. ML:2.1 0.0002385 0.32 AML other m 2020-12-17T22:44:06.01
IV.GIUL.HHE. ML:2.0 0.00020400000000000003 0.5 AML other m 2020-12-17T22:44:07.24
IV.GAVE.EHE. ML:2.3 0.00030000000000000003 0.44 AML other m 2020-12-17T22:44:08.58
IV.CESX.HHN. ML:2.1 0.000219 0.4 AML other m 2020-12-17T22:44:08.53
IV.ARRO.EHN. ML:2.1 0.00024349999999999998 0.66 AML other m 2020-12-17T22:44:08.20
IV.LAV9.HHE. ML:2.7 0.001875 0.32 AML other m 2020-12-17T22:44:08.60
IV.LAV9.HNE. ML:2.7 0.0017900000000000001 0.34 AML other m 2020-12-17T22:44:08.61
IV.GAVE.EHN. ML:2.5 0.00042699999999999997 0.32 AML other m 2020-12-17T22:44:08.68
IV.LNSS.HHE. ML:2.1 0.0002295 1.5 AML other m 2020-12-17T22:44:09.88
IV.LAV9.HNN. ML:2.6 0.00132 0.34 AML other m 2020-12-17T22:44:09.78
IV.LAV9.HHN. ML:2.6 0.001385 0.34 AML other m 2020-12-17T22:44:09.78
IV.CESX.HHE. ML:2.2 0.00024249999999999999 0.36 AML other m 2020-12-17T22:44:09.96
IV.TOLF.HHN. ML:2.0 0.0001515 0.42 AML other m 2020-12-17T22:44:10.15
IV.LNSS.HHN. ML:2.2 0.000264 1.42 AML other m 2020-12-17T22:44:10.98
IV.T0110.HHN. ML:2.3 0.0003095 0.42 AML other m 2020-12-17T22:44:10.48
IV.LRP.EHN. ML:1.6 0.00007005 0.26 AML other m 2020-12-17T22:44:10.69
IV.T0110.HHE. ML:2.2 0.00022049999999999997 0.38 AML other m 2020-12-17T22:44:10.60
IV.LRP.EHE. ML:2.1 0.0002155 1.02 AML other m 2020-12-17T22:44:11.60
IV.TOLF.HHE. ML:2.0 0.0001505 0.46 AML other m 2020-12-17T22:44:11.29
IV.MOMA.HHE. ML:2.2 0.0001655 1.06 AML other m 2020-12-17T22:44:15.80
IV.POFI.HHN. ML:1.8 0.00009120000000000001 0.26 AML other m 2020-12-17T22:44:15.47
IV.POFI.HHE. ML:1.8 0.0001055 0.4 AML other m 2020-12-17T22:44:15.77
IV.INTR.HHN. ML:2.3 0.00028649999999999997 1.56 AML other m 2020-12-17T22:44:16.07
IV.MCI.EHE. ML:2.4 0.000314 0.78 AML other m 2020-12-17T22:44:16.67
IV.MOMA.HHN. ML:2.2 0.000185 0.28 AML other m 2020-12-17T22:44:17.44
IV.MCI.EHN. ML:2.3 0.0002215 1.62 AML other m 2020-12-17T22:44:18.88
IV.INTR.HHE. ML:2.1 0.00017199999999999998 0.78 AML other m 2020-12-17T22:44:18.52
IV.CESI.HHN. ML:2.5 0.000245 0.38 AML other m 2020-12-17T22:44:19.41
IV.CESI.HHE. ML:2.2 0.000134 0.44 AML other m 2020-12-17T22:44:22.40
IV.FDMO.HHE. ML:2.0 0.00009095 0.32 AML other m 2020-12-17T22:44:22.36
IV.CERA.HHN. ML:2.1 0.000122 1.46 AML other m 2020-12-17T22:44:25.16
IV.ASSB.HHE. ML:2.3 0.0001465 0.52 AML other m 2020-12-17T22:44:26.60
IV.FDMO.HHN. ML:2.0 0.00007655 0.42 AML other m 2020-12-17T22:44:26.65
IV.ASSB.HHN. ML:2.1 0.00009520000000000001 1.44 AML other m 2020-12-17T22:44:26.80
IV.CERA.HHE. ML:2.0 0.00010750000000000001 1.06 AML other m 2020-12-17T22:44:29.76
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
Waveforms Seismic signals in miniseed + resp format Download