Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-02-2021 and time 01:44:52 (Italy) in region 2 km SE Vicovaro (RM)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Vicovaro (RM), on

  • 07-02-2021 00:44:52 (UTC)
  • 07-02-2021 01:44:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0070, 12.9120 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
Vicovaro RM 2 4019 4019
Mandela RM 3 917 4936
Sambuci RM 3 925 5861
Saracinesco RM 3 185 6046
Castel Madama RM 5 7399 13445
Roccagiovine RM 5 263 13708
Ciciliano RM 6 1336 15044
San Polo dei Cavalieri RM 6 2992 18036
Anticoli Corrado RM 7 915 18951
Cineto Romano RM 7 601 19552
Roviano RM 7 1351 20903
Licenza RM 8 1011 21914
Marano Equo RM 9 779 22693
Marcellina RM 9 7280 29973
Cerreto Laziale RM 9 1118 31091
Riofreddo RM 10 781 31872
Arsoli RM 10 1586 33458
Percile RM 10 255 33713
San Gregorio da Sassola RM 10 1619 35332
Agosta RM 10 1765 37097
Tivoli RM 11 56533 93630
Gerano RM 11 1263 94893
Rocca Canterano RM 11 196 95089
Vallinfreda RM 11 283 95372
Casape RM 11 744 96116
Pisoniano RM 12 770 96886
Oricola AQ 12 1244 98130
Canterano RM 13 351 98481
Cervara di Roma RM 13 455 98936
Vivaro Romano RM 13 182 99118
Rocca di Botte AQ 13 856 99974
Poli RM 13 2418 102392
Monteflavio RM 13 1348 103740
Palombara Sabina RM 14 13269 117009
Rocca Santo Stefano RM 14 975 117984
Orvinio RI 14 405 118389
San Vito Romano RM 15 3273 121662
Guidonia Montecelio RM 15 88673 210335
Camerata Nuova RM 16 447 210782
Capranica Prenestina RM 16 351 211133
Pereto AQ 17 682 211815
Sant'Angelo Romano RM 17 5018 216833
Turania RI 17 241 217074
Moricone RM 17 2650 219724
Gallicano nel Lazio RM 17 6334 226058
Bellegra RM 17 2887 228945
Montorio Romano RM 17 1984 230929
Carsoli AQ 17 5396 236325
Pozzaglia Sabina RI 18 360 236685
Castel San Pietro Romano RM 18 902 237587
Rocca di Cave RM 18 377 237964
Subiaco RM 18 9074 247038
Collalto Sabino RI 18 442 247480
Scandriglia RI 19 3108 250588
Palestrina RM 19 21672 272260
Olevano Romano RM 19 6687 278947
Roiate RM 19 737 279684
Zagarolo RM 20 17843 297527
Genazzano RM 20 6036 303563

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Tivoli (56533 inhabitants)
15 Km E of Guidonia Montecelio (88673 inhabitants)
37 Km NE of Velletri (53303 inhabitants)
38 Km E of Roma (2864731 inhabitants)
51 Km NE of Pomezia (62966 inhabitants)
51 Km NE of Aprilia (73446 inhabitants)
56 Km SW of L'Aquila (69753 inhabitants)
60 Km N of Latina (125985 inhabitants)
62 Km E of Fiumicino (78395 inhabitants)
65 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 1.4 2021-02-07
00:44:52		 42.007 12.9125 9 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89261061
Reviewed
Rev100 		ML 1.4 2021-02-07
00:44:52		 42.0198 12.9185 9 2021-02-07
00:48:50		 Sala Sismica INGV-Roma 86894621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-07 00:44:52 ± 0.09
Latitude 42.0070 ± 0.0045
Longitude 12.9125 ± 0.0073
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89261061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 517
Semi-minor axis of confidence ellipse (meter) 463
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 145
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
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) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.69697
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 86894621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-07 00:48:50

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 89261061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 14:10:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HNZ. 2021-02-07T00:45:13.70 0.6 undecidable manual S 9 66.8775 50 0.38 43
MN.AQU.HNN. 2021-02-07T00:45:11.34 0.6 undecidable manual S 46 55.8996 50 0.97 35
IV.GIUL.HHZ. 2021-02-07T00:45:10.61 0.6 undecidable manual S 150 57.2982 50 -0.13 46
IV.SMA1.EHN. 2021-02-07T00:45:07.09 0.6 undecidable manual P 26 77.367 50 0.95 34
IV.SRES.HHN. 2021-02-07T00:45:06.47 0.6 undecidable manual S 308 41.8248 50 -0.15 47
IV.PTQR.HHZ. 2021-02-07T00:45:06.16 0.6 undecidable manual S 87 40.2264 50 -0.04 48
IV.SAMA.EHZ. 2021-02-07T00:45:05.46 0.6 undecidable manual S 227 36.4413 50 0.27 46
IV.LNSS.HNZ. 2021-02-07T00:45:04.25 0.6 undecidable manual P 9 66.8775 50 -0.28 44
IV.RDP.HHZ. 2021-02-07T00:45:04.19 0.6 undecidable manual S 211 32.0457 50 0.18 48
IV.FIAM.HNZ. 2021-02-07T00:45:03.57 0.6 undecidable manual S 30 33.5442 50 -0.83 39
MN.AQU.HNN. 2021-02-07T00:45:03.81 0.6 undecidable manual P 46 55.8996 50 0.98 35
IV.GIUL.HHZ. 2021-02-07T00:45:02.53 0.3 undecidable manual P 150 57.2982 50 -0.51 63
IV.SRES.HHN. 2021-02-07T00:45:00.85 0.3 undecidable manual P 308 41.8248 50 0.19 70
IV.PTQR.HHZ. 2021-02-07T00:45:00.20 0.3 undecidable manual P 87 40.2264 50 -0.22 70
IV.SAMA.EHZ. 2021-02-07T00:44:59.70 0.3 undecidable manual P 227 36.4413 50 -0.14 71
IV.RCAV.EHE. 2021-02-07T00:44:59.44 0.6 undecidable manual S 171 17.9709 116 -0.03 50
IT.CSO1.HGZ. 2021-02-07T00:44:59.44 0.6 undecidable manual S 54 17.7711 117 0.01 51
IV.RDP.HHZ. 2021-02-07T00:44:59.23 0.3 undecidable manual P 211 32.0457 50 0.08 73
IV.FIAM.HNZ. 2021-02-07T00:44:58.82 0.1 undecidable manual P 30 33.5442 50 -0.56 87
IV.MTCE.HHZ. 2021-02-07T00:44:58.16 0.3 undecidable manual S 277 14.1747 122 -0.16 74
IT.CSO1.HGZ. 2021-02-07T00:44:56.41 0.3 undecidable manual P 54 17.7711 117 -0.1 74
IV.RCAV.EHE. 2021-02-07T00:44:56.67 0.3 undecidable manual P 171 17.9709 116 0.14 74
IV.CERT.HHZ. 2021-02-07T00:44:56.90 0.6 undecidable manual S 138 8.5803 136 0.08 51
IV.CERT.HHZ. 2021-02-07T00:44:55.14 0.1 undecidable manual P 138 8.5803 136 0.14 100
IV.MTCE.HHZ. 2021-02-07T00:44:55.89 0.3 undecidable manual P 277 14.1747 122 0.02 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HHE. ML:1.4 0.00038700000000000003 0.44 AML other m 2021-02-07T00:44:57.49
IV.CERT.HNE. ML:1.6 0.0006810000000000001 0.46 AML other m 2021-02-07T00:44:57.48
IV.CERT.HNN. ML:1.6 0.000554 0.46 AML other m 2021-02-07T00:44:57.81
IV.CERT.HHN. ML:1.5 0.0005 0.46 AML other m 2021-02-07T00:44:57.82
IV.MTCE.HHN. ML:0.9 0.0000755 0.62 AML other m 2021-02-07T00:44:58.54
IV.MTCE.HHE. ML:1.0 0.0001055 0.66 AML other m 2021-02-07T00:44:59.91
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