Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 19-12-2020 and time 09:44:39 (UTC) in region 2 km SE Mandela (RM)

A magnitude ML 1.2 earthquake occured in region: 2 km SE Mandela (RM), on

  • 19-12-2020 09:44:39 (UTC)
  • 19-12-2020 10:44:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0170, 12.9340 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
Saracinesco RM 2 185 1102
Sambuci RM 3 925 2027
Vicovaro RM 4 4019 6046
Cineto Romano RM 5 601 6647
Anticoli Corrado RM 5 915 7562
Roccagiovine RM 5 263 7825
Roviano RM 5 1351 9176
Ciciliano RM 6 1336 10512
Castel Madama RM 7 7399 17911
Licenza RM 7 1011 18922
Marano Equo RM 7 779 19701
Arsoli RM 7 1586 21287
Riofreddo RM 7 781 22068
San Polo dei Cavalieri RM 8 2992 25060
Cerreto Laziale RM 9 1118 26178
Percile RM 9 255 26433
Agosta RM 9 1765 28198
Vallinfreda RM 9 283 28481
Oricola AQ 10 1244 29725
Rocca Canterano RM 10 196 29921
Gerano RM 10 1263 31184
Marcellina RM 11 7280 38464
Vivaro Romano RM 11 182 38646
Rocca di Botte AQ 11 856 39502
Cervara di Roma RM 12 455 39957
Canterano RM 12 351 40308
San Gregorio da Sassola RM 12 1619 41927
Pisoniano RM 12 770 42697
Tivoli RM 13 56533 99230
Casape RM 13 744 99974
Orvinio RI 13 405 100379
Monteflavio RM 14 1348 101727
Rocca Santo Stefano RM 14 975 102702
Camerata Nuova RM 14 447 103149
Pereto AQ 15 682 103831
Poli RM 15 2418 106249
Turania RI 15 241 106490
Palombara Sabina RM 15 13269 119759
Carsoli AQ 15 5396 125155
San Vito Romano RM 15 3273 128428
Pozzaglia Sabina RI 16 360 128788
Collalto Sabino RI 16 442 129230
Bellegra RM 17 2887 132117
Subiaco RM 17 9074 141191
Montorio Romano RM 17 1984 143175
Guidonia Montecelio RM 17 88673 231848
Capranica Prenestina RM 17 351 232199
Moricone RM 17 2650 234849
Scandriglia RI 18 3108 237957
Sant'Angelo Romano RM 18 5018 242975
Gallicano nel Lazio RM 19 6334 249309
Rocca di Cave RM 19 377 249686
Olevano Romano RM 19 6687 256373
Roiate RM 19 737 257110
Castel San Pietro Romano RM 19 902 258012
Nespolo RI 19 246 258258
Collegiove RI 20 213 258471
Affile RM 20 1548 260019
Paganico Sabino RI 20 172 260191
Palestrina RM 20 21672 281863

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km E of Tivoli (56533 inhabitants)
17 Km E of Guidonia Montecelio (88673 inhabitants)
39 Km NE of Velletri (53303 inhabitants)
40 Km E of Roma (2864731 inhabitants)
53 Km NE of Pomezia (62966 inhabitants)
53 Km NE of Aprilia (73446 inhabitants)
54 Km SW of L'Aquila (69753 inhabitants)
61 Km N of Latina (125985 inhabitants)
64 Km E of Fiumicino (78395 inhabitants)
65 Km SE of Terni (111501 inhabitants)
68 Km NE of Anzio (54211 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 inhabitants)
96 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 1.2 2020-12-19
09:44:39		 42.0168 12.9343 9 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86167581
Reviewed
Rev100 		ML 1.2 2020-12-19
09:44:38		 42.0077 12.9097 10 2020-12-19
09:55:01		 Sala Sismica INGV-Roma 85540361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 09:44:39 ± 0.06
Latitude 42.0168 ± 0.0027
Longitude 12.9343 ± 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 86167581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 351
Semi-minor axis of confidence ellipse (meter) 221
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 293
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 30
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) 0.83097
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 86167581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 10:28:18

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 85540361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 09:55:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MAGA.HHZ. 2020-12-19T09:46:28.83 3.0 undecidable manual Sg 15.07 0
AC.VLO.HHZ. 2020-12-19T09:46:16.87 3.0 undecidable manual Pg 22.16 0
ST.PANI.EHZ. 2020-12-19T09:46:10.36 3.0 undecidable manual Sn -6.6 0
GU.RNCA.HHZ. 2020-12-19T09:46:03.59 3.0 undecidable manual Sn 0.06 0
IV.RAVA.EHZ. 2020-12-19T09:45:59.06 3.0 undecidable manual Sg 11.61 0
IV.CAGR.HHZ. 2020-12-19T09:45:55.94 3.0 undecidable manual Pg 12.23 0
OT.OT05.EHZ. 2020-12-19T09:45:51.15 3.0 undecidable manual Sg 10.69 0
IV.ZONE.HHZ. 2020-12-19T09:45:40.60 3.0 undecidable manual Pg 8.99 0
IV.MAGA.HHZ. 2020-12-19T09:45:31.45 3.0 undecidable manual Pn 1.58 0
MN.TRI.HHZ. 2020-12-19T09:45:26.40 3.0 undecidable manual Pn -1.48 0
IV.SBPO.HNZ. 2020-12-19T09:45:21.94 3.0 negative manual Pn 2.38 0
IV.RAVA.EHZ. 2020-12-19T09:45:15.84 3.0 negative manual Pn 0.75 0
IT.LRNO.HNZ. 2020-12-19T09:45:07.81 3.0 undecidable manual Pg 3.92 0
IV.GAVE.EHN. 2020-12-19T09:45:02.30 0.6 undecidable manual S 357 74.9694 50 0.26 45
IV.MNTT.EHZ. 2020-12-19T09:44:54.62 3.0 negative manual P -0.19 0
IV.MOMA.HHZ. 2020-12-19T09:44:54.75 0.3 undecidable manual P 341 92.241 50 -0.22 65
IV.SRES.HHZ. 2020-12-19T09:44:53.74 0.3 undecidable manual S 305 42.624 50 0.34 70
IV.PTQR.HHZ. 2020-12-19T09:44:52.41 0.6 undecidable manual S 89 38.4282 50 0.13 49
IV.SAMA.EHZ. 2020-12-19T09:44:52.28 0.6 undecidable manual S 227 38.5281 50 -0.03 50
IV.SMA1.EHN. 2020-12-19T09:44:52.46 0.6 undecidable manual P 26 75.5688 50 0.05 46
IV.GUAR.HHZ. 2020-12-19T09:44:52.58 0.6 undecidable manual S 128 39.7269 50 -0.07 50
IV.VIVA.HHZ. 2020-12-19T09:44:51.04 0.6 undecidable manual S 205 32.5452 105 0.34 47
IV.GAVE.EHN. 2020-12-19T09:44:51.96 0.3 undecidable manual P 357 74.9694 50 -0.35 66
IV.CESX.HHE. 2020-12-19T09:44:51.83 0.1 undecidable manual P 337 71.5728 50 0.05 94
IV.CAMP.HHE. 2020-12-19T09:44:51.82 0.3 undecidable manual P 34 69.4749 50 0.35 66
IV.RDP.HHZ. 2020-12-19T09:44:51.42 0.3 undecidable manual S 213 33.9438 50 0.34 71
IV.LNSS.HNZ. 2020-12-19T09:44:50.49 0.3 undecidable manual P 8 65.5899 50 -0.37 66
IV.FIAM.HHZ. 2020-12-19T09:44:50.25 0.3 undecidable manual S 28 31.6461 105 -0.15 74
IV.ARRO.EHZ. 2020-12-19T09:44:50.36 0.3 undecidable manual P 348 63.8916 50 -0.24 69
IV.GIUL.HHZ. 2020-12-19T09:44:49.08 0.3 undecidable manual P 152 57.3981 50 -0.52 65
IV.SRES.HHZ. 2020-12-19T09:44:47.48 0.1 undecidable manual P 305 42.624 50 0.16 97
IV.GUAR.HHZ. 2020-12-19T09:44:46.61 0.3 undecidable manual P 128 39.7269 50 -0.28 71
IV.RDP.HHZ. 2020-12-19T09:44:46.27 0.1 undecidable manual P 213 33.9438 50 0.28 96
IV.PTQR.HHZ. 2020-12-19T09:44:46.45 0.1 undecidable manual P 89 38.4282 50 -0.23 96
IV.VIVA.HHZ. 2020-12-19T09:44:46.08 0.3 undecidable manual P 205 32.5452 105 0.31 71
IV.RCAV.EHZ. 2020-12-19T09:44:46.05 0.3 undecidable manual S 177 18.87 115 -0.16 76
IV.SAMA.EHZ. 2020-12-19T09:44:46.29 0.6 undecidable manual P 227 38.5281 50 -0.41 46
IV.FIAM.HHZ. 2020-12-19T09:44:45.54 0.3 undecidable manual P 28 31.6461 105 -0.05 76
IT.CSO1.HGN. 2020-12-19T09:44:45.55 0.3 undecidable manual S 54 15.6732 119 0.31 74
IT.MMP1.HGN. 2020-12-19T09:44:45.58 0.3 undecidable manual P 329 29.9478 106 0.31 72
IV.MTCE.HHZ. 2020-12-19T09:44:44.82 0.3 undecidable manual S 272 15.873 118 -0.46 71
IV.RCAV.EHZ. 2020-12-19T09:44:43.28 0.3 undecidable manual P 177 18.87 115 0.11 76
IT.CSO1.HGN. 2020-12-19T09:44:43.00 0.3 undecidable manual P 54 15.6732 119 0.39 72
IV.MTCE.HHZ. 2020-12-19T09:44:42.41 0.1 undecidable manual P 272 15.873 118 -0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:1.7 0.00045700925000000006 1.7632 AML other m 2020-12-19T09:44:44.00
IV.MTCE.HHN. ML:1.3 0.00018692035000000002 0.3392 AML other m 2020-12-19T09:44:45.17
IV.FIAM.HHE. ML:0.9 0.000040444915 0.384 AML other m 2020-12-19T09:44:50.87
IV.FIAM.HHN. ML:1.0 0.000047770994999999993 0.4032 AML other m 2020-12-19T09:44:53.74
IV.GIUL.HHE. ML:1.0 0.0000192699905 0.096 AML other m 2020-12-19T09:44:57.94
IV.GIUL.HHN. ML:1.1 0.000024951540000000003 0.1792 AML other m 2020-12-19T09:44:59.35
IV.MOMA.HHE. ML:1.2 0.000021550759999999998 0.6592 AML other m 2020-12-19T09:45:08.25
IV.MOMA.HHN. ML:1.2 0.000020972005000000002 0.256 AML other m 2020-12-19T09:45:11.85
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