Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 19-12-2020 and time 14:24:12 (UTC) in region 2 km S Mandela (RM)

A magnitude ML 1.5 earthquake occured in region: 2 km S Mandela (RM), on

  • 19-12-2020 14:24:12 (UTC)
  • 19-12-2020 15:24:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0110, 12.9230 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
Mandela RM 2 917 917
Vicovaro RM 3 4019 4936
Saracinesco RM 3 185 5121
Sambuci RM 3 925 6046
Roccagiovine RM 5 263 6309
Anticoli Corrado RM 6 915 7224
Cineto Romano RM 6 601 7825
Ciciliano RM 6 1336 9161
Castel Madama RM 6 7399 16560
Roviano RM 6 1351 17911
San Polo dei Cavalieri RM 7 2992 20903
Licenza RM 7 1011 21914
Marano Equo RM 8 779 22693
Arsoli RM 9 1586 24279
Riofreddo RM 9 781 25060
Cerreto Laziale RM 9 1118 26178
Percile RM 9 255 26433
Marcellina RM 10 7280 33713
Agosta RM 10 1765 35478
Vallinfreda RM 10 283 35761
Gerano RM 10 1263 37024
Rocca Canterano RM 10 196 37220
Oricola AQ 11 1244 38464
San Gregorio da Sassola RM 11 1619 40083
Tivoli RM 12 56533 96616
Pisoniano RM 12 770 97386
Casape RM 12 744 98130
Vivaro Romano RM 12 182 98312
Canterano RM 12 351 98663
Rocca di Botte AQ 12 856 99519
Cervara di Roma RM 12 455 99974
Orvinio RI 14 405 100379
Monteflavio RM 14 1348 101727
Rocca Santo Stefano RM 14 975 102702
Poli RM 14 2418 105120
Palombara Sabina RM 14 13269 118389
San Vito Romano RM 15 3273 121662
Camerata Nuova RM 15 447 122109
Pereto AQ 16 682 122791
Turania RI 16 241 123032
Guidonia Montecelio RM 16 88673 211705
Carsoli AQ 16 5396 217101
Capranica Prenestina RM 17 351 217452
Bellegra RM 17 2887 220339
Moricone RM 17 2650 222989
Pozzaglia Sabina RI 17 360 223349
Montorio Romano RM 17 1984 225333
Subiaco RM 17 9074 234407
Sant'Angelo Romano RM 18 5018 239425
Collalto Sabino RI 18 442 239867
Gallicano nel Lazio RM 18 6334 246201
Rocca di Cave RM 18 377 246578
Castel San Pietro Romano RM 18 902 247480
Scandriglia RI 18 3108 250588
Olevano Romano RM 19 6687 257275
Palestrina RM 19 21672 278947
Roiate RM 19 737 279684

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Tivoli (56533 inhabitants)
16 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)
52 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)
65 Km SE of Terni (111501 inhabitants)
67 Km NE of Anzio (54211 inhabitants)
81 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 1.5 2020-12-19
14:24:12		 42.0113 12.9233 9 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86175061
Reviewed
Rev100 		ML 1.5 2020-12-19
14:24:12		 42.0082 12.913 10 2020-12-19
14:34:41		 Sala Sismica INGV-Roma 85548401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 14:24:12 ± 0.06
Latitude 42.0113 ± 0.0027
Longitude 12.9233 ± 0.0048
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 86175061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
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) 48
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68978
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85548401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 14:34:41

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86175061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 15:54:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.PANI.EHZ. 2020-12-19T14:25:33.30 3.0 undecidable manual Sn -2.19 0
IT.VRB.HGZ. 2020-12-19T14:25:19.68 3.0 undecidable manual Pg 12.74 0
IV.NDIM.HNZ. 2020-12-19T14:25:19.44 3.0 undecidable manual Sg 4.05 0
IV.SPS2.HHZ. 2020-12-19T14:25:18.79 3.0 positive manual Pg 16.9 0
IV.RAVA.EHZ. 2020-12-19T14:25:14.83 3.0 undecidable manual Sg 4.37 0
GU.RORO.HHZ. 2020-12-19T14:25:13.89 3.0 undecidable manual Pg 14.92 0
ST.CARE.EHZ. 2020-12-19T14:24:59.88 3.0 negative manual Pn 0.54 0
IV.FIR.HHZ. 2020-12-19T14:24:50.00 3.0 undecidable manual S -2.77 0
IV.NDIM.HNZ. 2020-12-19T14:24:38.57 3.0 positive manual Pn -2.16 0
GU.GSCL.HHZ. 2020-12-19T14:24:37.83 3.0 positive manual Pg -0.1 0
IV.GAVE.EHN. 2020-12-19T14:24:35.41 0.3 undecidable manual S 358 75.5688 50 0.27 65
IV.CESX.HHE. 2020-12-19T14:24:34.48 0.3 undecidable manual S 337 71.7726 50 0.35 64
IV.GIUL.HHZ. 2020-12-19T14:24:30.57 0.3 undecidable manual S 151 57.1983 50 0.32 66
IV.BRSN.EHZ. 2020-12-19T14:24:29.41 3.0 positive manual P 2.25 0
IV.LATB.EHZ. 2020-12-19T14:24:29.94 0.3 undecidable manual S 177 57.498 50 -0.38 66
IV.T1299.HNN. 2020-12-19T14:24:25.60 0.3 undecidable manual P 23 75.0693 50 0.26 65
IV.PTQR.HHZ. 2020-12-19T14:24:25.73 0.6 undecidable manual S 88 39.3273 50 0.26 46
IV.GUAR.HNE. 2020-12-19T14:24:25.60 0.6 undecidable manual S 127 40.1265 50 -0.08 48
IV.SMA1.EHN. 2020-12-19T14:24:25.92 0.3 undecidable manual P 26 76.5678 50 0.36 64
IV.GAVE.EHN. 2020-12-19T14:24:25.01 0.3 undecidable manual P 358 75.5688 50 -0.4 63
IV.CESX.HHE. 2020-12-19T14:24:24.69 0.1 undecidable manual P 337 71.7726 50 -0.14 90
IV.LNSS.HNZ. 2020-12-19T14:24:23.70 0.1 undecidable manual P 8 66.2781 50 -0.29 88
IV.FIAM.HHZ. 2020-12-19T14:24:23.47 0.3 undecidable manual S 29 32.6451 50 -0.21 71
IV.RDP.HHZ. 2020-12-19T14:24:23.68 0.3 undecidable manual S 212 32.9448 50 -0.08 73
IV.ARRO.EHZ. 2020-12-19T14:24:23.66 0.1 undecidable manual P 348 64.2912 50 -0.02 93
IV.GIUL.HHZ. 2020-12-19T14:24:22.11 0.3 undecidable manual P 151 57.1983 50 -0.48 64
IV.RMP.HHZ. 2020-12-19T14:24:22.56 0.3 undecidable manual S 219 28.5492 108 0.01 75
IV.LATB.EHZ. 2020-12-19T14:24:22.80 0.1 undecidable manual P 177 57.498 50 0.17 91
IT.MMP1.HGE. 2020-12-19T14:24:22.66 0.3 undecidable manual S 331 30.0477 50 -0.34 70
IV.SRES.HHZ. 2020-12-19T14:24:20.37 0.6 undecidable manual P 306 42.2244 50 0.09 48
IV.SAMA.EHZ. 2020-12-19T14:24:19.83 0.3 undecidable manual P 227 37.4292 50 0.28 69
IV.RDP.HHZ. 2020-12-19T14:24:19.26 0.1 undecidable manual P 212 32.9448 50 0.42 91
IV.MA9.HHZ. 2020-12-19T14:24:19.47 0.6 undecidable manual P 219 34.5432 50 0.37 46
IV.RCAV.EHZ. 2020-12-19T14:24:19.23 0.6 undecidable manual S 174 18.2706 117 -0.03 50
IV.PTQR.HHZ. 2020-12-19T14:24:19.52 0.1 undecidable manual P 88 39.3273 50 -0.31 92
IT.CSO1.HGE. 2020-12-19T14:24:19.04 0.3 undecidable manual S 54 16.7721 119 0.24 73
IV.GUAR.HNE. 2020-12-19T14:24:19.66 0.1 undecidable manual P 127 40.1265 50 -0.29 92
IV.FIAM.HHZ. 2020-12-19T14:24:18.56 0.1 undecidable manual P 29 32.6451 50 -0.24 94
IT.MMP1.HGE. 2020-12-19T14:24:18.72 0.1 undecidable manual P 331 30.0477 50 0.32 93
IV.VIVA.HHZ. 2020-12-19T14:24:18.72 0.3 undecidable manual P 204 31.6461 50 0.08 73
IV.RMP.HHZ. 2020-12-19T14:24:18.35 0.3 undecidable manual P 219 28.5492 108 0.21 72
IV.MTCE.HHZ. 2020-12-19T14:24:17.89 0.3 undecidable manual S 275 14.9739 122 -0.37 71
IT.CSO1.HGE. 2020-12-19T14:24:16.20 0.1 undecidable manual P 54 16.7721 119 0.22 97
IV.RCAV.EHZ. 2020-12-19T14:24:16.17 0.1 undecidable manual P 174 18.2706 117 -0.07 100
IV.MTCE.HHZ. 2020-12-19T14:24:15.56 0.1 undecidable manual P 275 14.9739 122 -0.11 100
IV.SSFR.HNZ. 2020-12-19T14:24:09.30 3.0 positive manual P -2.28 0
IV.ATCC.EHZ. 2020-12-19T14:24:05.71 3.0 undecidable manual P -3.72 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHN. ML:1.5 0.00030604835 0.3008 AML other m 2020-12-19T14:24:18.17
IV.MTCE.HHE. ML:2.0 0.0009764891499999999 0.32 AML other m 2020-12-19T14:24:18.18
IV.RCAV.EHE. ML:1.8 0.0005517822999999999 1.7248 AML other m 2020-12-19T14:24:21.07
IV.RCAV.EHN. ML:1.7 0.00043258225 0.3584 AML other m 2020-12-19T14:24:21.39
IV.FIAM.HHE. ML:1.3 0.00008190402499999999 1.3792 AML other m 2020-12-19T14:24:23.01
IV.FIAM.HHN. ML:1.3 0.00008272391000000001 0.4032 AML other m 2020-12-19T14:24:24.80
IV.PTQR.HHE. ML:1.4 0.00008634842000000001 0.32 AML other m 2020-12-19T14:24:27.45
IV.SRES.HHN. ML:1.4 0.0000767 0.74 AML other m 2020-12-19T14:24:27.49
IV.PTQR.HHN. ML:1.5 0.000106207125 0.2816 AML other m 2020-12-19T14:24:27.78
IV.SRES.HHE. ML:1.3 0.000060943695 0.3968 AML other m 2020-12-19T14:24:28.88
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