Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 13-02-2021 and time 13:50:20 (Italy) in region 2 km SE Vicovaro (RM)

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

  • 13-02-2021 12:50:20 (UTC)
  • 13-02-2021 13:50:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0050, 12.9110 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
Sambuci RM 3 925 4944
Mandela RM 3 917 5861
Saracinesco RM 4 185 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
Marcellina RM 9 7280 29194
Marano Equo RM 9 779 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
Tivoli RM 10 56533 91865
Agosta RM 10 1765 93630
Gerano RM 11 1263 94893
Rocca Canterano RM 11 196 95089
Casape RM 11 744 95833
Vallinfreda RM 11 283 96116
Pisoniano RM 11 770 96886
Oricola AQ 12 1244 98130
Canterano RM 13 351 98481
Cervara di Roma RM 13 455 98936
Poli RM 13 2418 101354
Vivaro Romano RM 13 182 101536
Rocca di Botte AQ 13 856 102392
Monteflavio RM 14 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
Capranica Prenestina RM 16 351 210686
Camerata Nuova RM 16 447 211133
Sant'Angelo Romano RM 17 5018 216151
Gallicano nel Lazio RM 17 6334 222485
Bellegra RM 17 2887 225372
Moricone RM 17 2650 228022
Turania RI 17 241 228263
Pereto AQ 17 682 228945
Montorio Romano RM 17 1984 230929
Carsoli AQ 18 5396 236325
Castel San Pietro Romano RM 18 902 237227
Rocca di Cave RM 18 377 237604
Pozzaglia Sabina RI 18 360 237964
Subiaco RM 18 9074 247038
Palestrina RM 18 21672 268710
Collalto Sabino RI 19 442 269152
Scandriglia RI 19 3108 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
10 Km E of Tivoli (56533 inhabitants)
15 Km E of Guidonia Montecelio (88673 inhabitants)
37 Km NE of Velletri (53303 inhabitants)
37 Km E of Roma (2864731 inhabitants)
50 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)
61 Km E of Fiumicino (78395 inhabitants)
66 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 1.7 2021-02-13
12:50:20		 42.0053 12.911 9 2021-07-12
16:55:12		 Bollettino Sismico Italiano INGV 90499381
Reviewed
Rev100 		ML 1.7 2021-02-13
12:50:20		 42.0082 12.9183 9 2021-02-13
22:50:19		 Sala Sismica INGV-Roma 87127651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-13 12:50:20 ± 0.04
Latitude 42.0053 ± 0.0018
Longitude 12.9110 ± 0.0024
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 90499381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 203
Semi-minor axis of confidence ellipse (meter) 198
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58366
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 90499381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-26 02:37:33

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 87127651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-13 22:50:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2021-02-13T12:50:32.12 1.0 undecidable manual P 349 64.7907 50 -0.06 30
IV.RM33.EHN. 2021-02-13T12:50:31.60 1.0 undecidable manual P 24 61.1943 50 -0.03 30
IV.GIUL.HHN. 2021-02-13T12:50:31.30 0.6 undecidable manual P 150 57.1983 50 0.28 58
IV.RMP.HHE. 2021-02-13T12:50:30.53 1.0 undecidable manual S 218 27.3504 109 -0.09 32
IV.LATB.EHZ. 2021-02-13T12:50:30.88 1.0 undecidable manual P 176 56.8986 50 -0.1 30
IV.LAV9.HNZ. 2021-02-13T12:50:28.55 3.0 undecidable manual P 40.3263 0.12 0
IV.SRES.HHN. 2021-02-13T12:50:28.97 1.0 undecidable manual P 308 41.8248 50 0.32 30
IV.GUAR.HHE. 2021-02-13T12:50:28.28 1.0 undecidable manual P 125 40.5261 50 -0.18 31
IV.PTQR.HHN. 2021-02-13T12:50:28.63 0.6 undecidable manual P 87 40.4262 50 0.2 61
IV.FIAM.HNE. 2021-02-13T12:50:27.17 0.3 undecidable manual P 30 33.744 50 -0.23 92
IT.CSO1.HGE. 2021-02-13T12:50:27.64 0.3 undecidable manual S 54 18.0708 118 0.01 99
IV.VIVA.HHZ. 2021-02-13T12:50:27.11 3.0 undecidable manual P 30.6471 0.19 0
IV.RCAV.EHN. 2021-02-13T12:50:27.46 0.6 undecidable manual S 171 17.7711 118 -0.09 65
IV.SAMA.EHN. 2021-02-13T12:50:27.76 1.0 undecidable manual P 227 36.2415 50 -0.03 32
IV.RMP.HHE. 2021-02-13T12:50:26.25 0.3 undecidable manual P 218 27.3504 109 -0.13 95
IT.MMP1.HGN. 2021-02-13T12:50:26.92 1.0 undecidable manual P 334 30.1476 50 0.07 32
IV.MTCE.HHZ. 2021-02-13T12:50:26.40 0.3 undecidable manual S 278 14.0748 124 -0.04 99
IV.RDP.HHE. 2021-02-13T12:50:26.95 1.0 undecidable manual P 211 31.8459 50 -0.16 31
IV.GAVE.EHZ. 2021-02-13T12:50:25.77 3.0 undecidable manual P 0.57 0
IV.CERT.HHN. 2021-02-13T12:50:25.01 0.3 undecidable manual S 137 8.5803 138 0.02 100
IV.MTCE.HHZ. 2021-02-13T12:50:24.15 0.3 undecidable manual P 278 14.0748 124 0.19 96
IV.RCAV.EHN. 2021-02-13T12:50:24.66 0.3 undecidable manual P 171 17.7711 118 0.06 98
IV.PTRJ.HNZ. 2021-02-13T12:50:24.34 3.0 undecidable manual P 0.77 0
IT.CSO1.HGE. 2021-02-13T12:50:24.54 0.6 undecidable manual P 54 18.0708 118 -0.11 64
IV.CERT.HHN. 2021-02-13T12:50:23.16 0.6 undecidable manual P 137 8.5803 138 0.04 66
IV.PIGN.HHN. 2021-02-13T12:50:23.93 3.0 negative manual P -0.95 0
IV.LPEL.HHZ. 2021-02-13T12:50:10.48 3.0 undecidable manual P -0.26 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNE. ML:1.9 0.00113 0.46 AML other m 2021-02-13T12:50:25.75
IV.CERT.HHE. ML:1.6 0.000644 0.46 AML other m 2021-02-13T12:50:25.75
IV.CERT.HHN. ML:1.9 0.001064 0.44 AML other m 2021-02-13T12:50:26.03
IV.CERT.HNN. ML:1.8 0.001026 0.38 AML other m 2021-02-13T12:50:26.06
IV.RCAV.EHN. ML:1.6 0.000305 0.18 AML other m 2021-02-13T12:50:28.07
IV.RCAV.EHE. ML:1.4 0.0002295 0.98 AML other m 2021-02-13T12:50:30.67
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