Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 06-07-2023 and time 01:01:51 (Italy) in region 1 km W Ciciliano (RM)

A magnitude ML 1.6 earthquake occured in region: 1 km W Ciciliano (RM), on

  • 05-07-2023 23:01:51 (UTC)
  • 06-07-2023 01:01:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9580, 12.9280 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ciciliano RM 1 1336 1336
Sambuci RM 3 925 2261
Cerreto Laziale RM 5 1118 3379
Castel Madama RM 5 7399 10778
Saracinesco RM 6 185 10963
Gerano RM 6 1263 12226
Pisoniano RM 6 770 12996
San Gregorio da Sassola RM 6 1619 14615
Casape RM 7 744 15359
Vicovaro RM 7 4019 19378
Anticoli Corrado RM 8 915 20293
Rocca Canterano RM 8 196 20489
Mandela RM 8 917 21406
Poli RM 8 2418 23824
Marano Equo RM 9 779 24603
Agosta RM 9 1765 26368
Canterano RM 9 351 26719
San Polo dei Cavalieri RM 9 2992 29711
Roviano RM 10 1351 31062
San Vito Romano RM 10 3273 34335
Rocca Santo Stefano RM 10 975 35310
Roccagiovine RM 11 263 35573
Tivoli RM 11 56533 92106
Capranica Prenestina RM 11 351 92457
Cineto Romano RM 11 601 93058
Bellegra RM 12 2887 95945
Arsoli RM 12 1586 97531
Cervara di Roma RM 12 455 97986
Marcellina RM 12 7280 105266
Rocca di Cave RM 13 377 105643
Castel San Pietro Romano RM 13 902 106545
Gallicano nel Lazio RM 13 6334 112879
Riofreddo RM 13 781 113660
Licenza RM 13 1011 114671
Palestrina RM 14 21672 136343
Oricola AQ 14 1244 137587
Olevano Romano RM 14 6687 144274
Rocca di Botte AQ 14 856 145130
Genazzano RM 15 6036 151166
Roiate RM 15 737 151903
Subiaco RM 15 9074 160977
Vallinfreda RM 15 283 161260
Percile RM 15 255 161515
Zagarolo RM 15 17843 179358
Cave RM 16 11287 190645
Affile RM 16 1548 192193
Camerata Nuova RM 16 447 192640
Guidonia Montecelio RM 17 88673 281313
Vivaro Romano RM 17 182 281495
Arcinazzo Romano RM 18 1348 282843
Palombara Sabina RM 18 13269 296112
Pereto AQ 18 682 296794
San Cesareo RM 18 15153 311947
Monteflavio RM 19 1348 313295
Serrone FR 19 3099 316394
Labico RM 19 6379 322773
Orvinio RI 19 405 323178
Sant'Angelo Romano RM 20 5018 328196
Colonna RM 20 4287 332483

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Tivoli (56533 inhabitants)
17 Km E of Guidonia Montecelio (88673 inhabitants)
33 Km NE of Velletri (53303 inhabitants)
37 Km E of Roma (2864731 inhabitants)
47 Km NE of Aprilia (73446 inhabitants)
48 Km NE of Pomezia (62966 inhabitants)
55 Km N of Latina (125985 inhabitants)
59 Km SW of L'Aquila (69753 inhabitants)
61 Km E of Fiumicino (78395 inhabitants)
62 Km NE of Anzio (54211 inhabitants)
71 Km SE of Terni (111501 inhabitants)
85 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 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
Reviewed
Rev100 		ML 1.6 2023-07-05
23:01:51		 41.9585 12.9278 10 2023-07-05
23:15:40		 Sala Sismica INGV-Roma 119002001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-05 23:01:51 ± 0.06
Latitude 41.9585 ± 0.0036
Longitude 12.9278 ± 0.0048
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119002001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 416
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63222
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 119002001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-05 23:15:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2023-07-05T23:02:15.23 3.0 positive manual P 2.47 0
IV.LPEL.HHZ. 2023-07-05T23:02:12.61 3.0 undecidable manual P 2.45 0
IV.LRP.EHZ. 2023-07-05T23:02:12.42 0.3 undecidable manual S 122 64.491 50 0.57 60
IV.VVLD.HHZ. 2023-07-05T23:02:10.42 0.3 undecidable manual S 100 58.1973 50 0.24 66
IV.CERA.HHZ. 2023-07-05T23:02:08.36 3.0 negative manual P -0.74 0
IV.LATB.EHZ. 2023-07-05T23:02:08.46 0.6 undecidable manual S 177 51.6039 50 0.05 46
IV.GIUL.HHZ. 2023-07-05T23:02:08.50 0.3 undecidable manual S 149 52.0035 50 -0.01 70
IV.PTQR.HHZ. 2023-07-05T23:02:05.49 0.3 undecidable manual S 80 39.627 50 0.29 67
IV.POFI.HHZ. 2023-07-05T23:02:04.05 3.0 positive manual P -0.27 0
IV.GUAR.HHZ. 2023-07-05T23:02:04.13 0.6 undecidable manual S 120 36.6411 50 -0.27 45
IV.LRP.EHZ. 2023-07-05T23:02:03.37 0.1 undecidable manual P 122 64.491 50 -0.02 91
IV.ARRO.EHZ. 2023-07-05T23:02:03.69 0.6 undecidable manual P 349 70.1742 50 -0.57 39
IV.VVLD.HHZ. 2023-07-05T23:02:02.25 0.1 undecidable manual P 100 58.1973 50 -0.18 89
IV.RDP.HNZ. 2023-07-05T23:02:02.82 0.6 undecidable manual S 219 28.3494 50 0.61 42
IV.GIUL.HHZ. 2023-07-05T23:02:01.19 0.1 undecidable manual P 149 52.0035 50 -0.27 88
IV.RMP.HHZ. 2023-07-05T23:02:01.39 0.6 undecidable manual S 229 24.5532 111 0.41 45
IV.VIVA.HHZ. 2023-07-05T23:02:01.52 0.6 undecidable manual S 209 26.5512 110 -0.09 48
IV.LATB.EHZ. 2023-07-05T23:02:00.98 0.1 undecidable manual P 177 51.6039 50 -0.43 85
IV.PTQR.HHZ. 2023-07-05T23:01:59.69 0.1 undecidable manual P 80 39.627 50 0.13 93
IT.MMP1.HGE. 2023-07-05T23:01:59.34 1.0 undecidable manual P 335 35.4423 50 0.43 22
IV.FIAM.HNZ. 2023-07-05T23:01:58.97 0.3 undecidable manual P 24 37.7289 50 -0.29 68
IV.GUAR.HHZ. 2023-07-05T23:01:58.89 0.6 undecidable manual P 120 36.6411 50 -0.2 46
IV.MA9.HHZ. 2023-07-05T23:01:58.31 1.0 undecidable manual P 227 30.5472 50 0.16 23
IV.MTCE.HHZ. 2023-07-05T23:01:58.67 0.3 undecidable manual S 295 16.872 119 0.1 73
IV.RDP.HNZ. 2023-07-05T23:01:57.79 0.1 undecidable manual P 219 28.3494 50 -0.04 97
IV.RMP.HHZ. 2023-07-05T23:01:57.07 0.3 undecidable manual P 229 24.5532 111 -0.05 73
IV.VIVA.HHZ. 2023-07-05T23:01:57.38 0.3 undecidable manual P 209 26.5512 110 -0.1 72
IV.RCAV.EHZ. 2023-07-05T23:01:57.12 0.3 undecidable manual S 173 12.3765 128 -0.16 73
IV.CERT.HHZ. 2023-07-05T23:01:55.55 0.6 undecidable manual S 103 4.5954 154 0.04 50
IV.MTCE.HHZ. 2023-07-05T23:01:55.79 0.1 undecidable manual P 295 16.872 119 0.07 98
IV.RCAV.EHZ. 2023-07-05T23:01:54.98 0.1 undecidable manual P 173 12.3765 128 0 100
IV.CERT.HHZ. 2023-07-05T23:01:54.16 0.1 undecidable manual P 103 4.5954 154 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RCAV.EHN. ML:1.8 0.0007676495999999999 0.2048 AML other m 2023-07-05T23:01:57.61
IV.RCAV.EHE. ML:2.1 0.00143 0.3 AML other m 2023-07-05T23:01:58.48
IV.GUAR.HHE. ML:1.6 0.0001552818 0.1536 AML other m 2023-07-05T23:02:05.80
IV.GUAR.HHN. ML:1.8 0.00023999999999999998 0.36 AML other m 2023-07-05T23:02:06.76
IV.PTQR.HHN. ML:1.6 0.0001295 0.32 AML other m 2023-07-05T23:02:07.21
IV.PTQR.HHE. ML:1.5 0.00010045 0.38 AML other m 2023-07-05T23:02:07.51
IV.GIUL.HHN. ML:1.7 0.000118 1.68 AML other m 2023-07-05T23:02:10.04
IV.GIUL.HHE. ML:1.4 0.00006762721 0.192 AML other m 2023-07-05T23:02:11.32
IV.POFI.HHE. ML:1.2 0.000024699150000000002 0.256 AML other m 2023-07-05T23:02:15.11
IV.VVLD.HHE. ML:1.3 0.00004444113499999999 0.2176 AML other m 2023-07-05T23:02:11.95
IV.ARRO.EHN. ML:1.4 0.000042228735 0.2176 AML other m 2023-07-05T23:02:17.16
IV.LRP.EHE. ML:1.5 0.000067275605 0.192 AML other m 2023-07-05T23:02:12.81
IV.LRP.EHN. ML:1.1 0.000023980235 0.2432 AML other m 2023-07-05T23:02:12.90
IV.VVLD.HHN. ML:1.3 0.000038647565 0.2816 AML other m 2023-07-05T23:02:14.30
IV.ARRO.EHE. ML:1.5 0.0000486 0.22 AML other m 2023-07-05T23:02:19.62
IV.POFI.HHN. ML:1.1 0.000021532925 0.384 AML other m 2023-07-05T23:02:17.17
IV.GUAR.HNE. ML:1.6 0.0001643231 0.192 AML other m 2023-07-05T23:02:05.82
IV.GUAR.HNN. ML:1.8 0.0002377977 0.3584 AML other m 2023-07-05T23:02:06.77
IV.POFI.HNE. ML:1.8 0.000100306055 0.3968 AML other m 2023-07-05T23:02:14.27
IV.POFI.HNN. ML:1.9 0.00012515224 0.6656 AML other m 2023-07-05T23:02:13.27
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