Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 06-07-2023 and time 02:29:34 (Italy) in region 1 km NW Ciciliano (RM)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Ciciliano (RM), on

  • 06-07-2023 00:29:34 (UTC)
  • 06-07-2023 02:29:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9690, 12.9350 at 8 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.

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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
Ciciliano RM 1 1336 1336
Sambuci RM 2 925 2261
Saracinesco RM 4 185 2446
Cerreto Laziale RM 5 1118 3564
Castel Madama RM 6 7399 10963
Vicovaro RM 6 4019 14982
Gerano RM 6 1263 16245
Anticoli Corrado RM 7 915 17160
Pisoniano RM 7 770 17930
Mandela RM 7 917 18847
San Gregorio da Sassola RM 8 1619 20466
Marano Equo RM 8 779 21245
Rocca Canterano RM 8 196 21441
Casape RM 8 744 22185
Roviano RM 8 1351 23536
Agosta RM 8 1765 25301
Canterano RM 9 351 25652
San Polo dei Cavalieri RM 9 2992 28644
Cineto Romano RM 10 601 29245
Roccagiovine RM 10 263 29508
Poli RM 10 2418 31926
Rocca Santo Stefano RM 10 975 32901
San Vito Romano RM 10 3273 36174
Arsoli RM 11 1586 37760
Tivoli RM 11 56533 94293
Cervara di Roma RM 11 455 94748
Riofreddo RM 12 781 95529
Capranica Prenestina RM 12 351 95880
Licenza RM 12 1011 96891
Marcellina RM 12 7280 104171
Bellegra RM 12 2887 107058
Oricola AQ 13 1244 108302
Rocca di Botte AQ 13 856 109158
Rocca di Cave RM 14 377 109535
Vallinfreda RM 14 283 109818
Castel San Pietro Romano RM 14 902 110720
Percile RM 14 255 110975
Gallicano nel Lazio RM 14 6334 117309
Olevano Romano RM 15 6687 123996
Subiaco RM 15 9074 133070
Palestrina RM 15 21672 154742
Roiate RM 15 737 155479
Camerata Nuova RM 15 447 155926
Genazzano RM 16 6036 161962
Vivaro Romano RM 16 182 162144
Affile RM 16 1548 163692
Cave RM 17 11287 174979
Zagarolo RM 17 17843 192822
Pereto AQ 17 682 193504
Guidonia Montecelio RM 18 88673 282177
Palombara Sabina RM 18 13269 295446
Arcinazzo Romano RM 18 1348 296794
Monteflavio RM 18 1348 298142
Orvinio RI 18 405 298547
Carsoli AQ 19 5396 303943
Serrone FR 20 3099 307042
San Cesareo RM 20 15153 322195
Sant'Angelo Romano RM 20 5018 327213
Turania RI 20 241 327454

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Tivoli (56533 inhabitants)
18 Km E of Guidonia Montecelio (88673 inhabitants)
34 Km NE of Velletri (53303 inhabitants)
38 Km E of Roma (2864731 inhabitants)
48 Km NE of Aprilia (73446 inhabitants)
49 Km NE of Pomezia (62966 inhabitants)
56 Km N of Latina (125985 inhabitants)
57 Km SW of L'Aquila (69753 inhabitants)
62 Km E of Fiumicino (78395 inhabitants)
63 Km NE of Anzio (54211 inhabitants)
70 Km SE of Terni (111501 inhabitants)
85 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 inhabitants)
100 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
Reviewed
Rev100 		ML 0.8 2023-07-06
00:29:34		 41.9692 12.9348 8 2023-07-06
00:40:11		 Sala Sismica INGV-Roma 119003871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-06 00:29:34 ± 0.11
Latitude 41.9692 ± 0.0081
Longitude 12.9348 ± 0.0097
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119003871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 685
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63132
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 119003871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-06 00:40:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HHZ. 2023-07-06T00:29:56.19 0.3 undecidable manual S 113 70.0743 50 -0.1 69
IV.PTQR.HHZ. 2023-07-06T00:29:48.27 0.3 undecidable manual S 81 38.8278 50 0.31 70
IV.FIAM.HHZ. 2023-07-06T00:29:47.22 0.6 undecidable manual S 24 36.4413 50 -0.09 49
IV.POFI.HHZ. 2023-07-06T00:29:46.55 0.6 undecidable manual P 113 70.0743 50 -0.54 41
IV.VVLD.HHZ. 2023-07-06T00:29:46.94 3.0 undecidable manual P 2.07 0
IV.PTQR.HHZ. 2023-07-06T00:29:42.32 0.3 undecidable manual P 81 38.8278 50 0.03 74
IV.FIAM.HHZ. 2023-07-06T00:29:41.77 0.3 undecidable manual P 24 36.4413 50 -0.14 72
IV.RDP.HHZ. 2023-07-06T00:29:41.04 0.6 undecidable manual P 219 29.6481 106 0.34 47
IV.VIVA.HHZ. 2023-07-06T00:29:41.33 0.3 undecidable manual P 209 27.8499 107 0.98 56
IV.MTCE.HHZ. 2023-07-06T00:29:40.95 0.3 undecidable manual S 291 16.9719 116 -0.14 75
IV.RMP.HHZ. 2023-07-06T00:29:39.96 0.3 undecidable manual P 228 25.752 108 0 76
IV.RCAV.EHZ. 2023-07-06T00:29:39.51 0.3 undecidable manual S 176 13.5753 122 -0.54 69
IV.MTCE.HHZ. 2023-07-06T00:29:38.16 0.3 undecidable manual P 291 16.9719 116 -0.16 75
IV.CERT.HHZ. 2023-07-06T00:29:37.90 0.3 undecidable manual S 120 4.4955 152 0.08 77
IV.RCAV.EHZ. 2023-07-06T00:29:37.51 0.1 undecidable manual P 176 13.5753 122 -0.21 99
IV.CERT.HHZ. 2023-07-06T00:29:36.66 0.1 undecidable manual P 120 4.4955 152 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HNN. ML:0.0 0.00100216905 0.19 AML other m 2023-07-06T00:29:37.98
IV.CERT.HHN. ML:0.0 0.0010641455 0.18 AML other m 2023-07-06T00:29:37.99
IV.CERT.HHE. ML:0.0 0.0003267325 0.24 AML other m 2023-07-06T00:29:38.48
IV.CERT.HNE. ML:0.0 0.00069009875 0.16 AML other m 2023-07-06T00:29:38.34
IV.MTCE.HHN. ML:1.0 0.00009922479000000001 0.24 AML other m 2023-07-06T00:29:41.96
IV.MTCE.HHE. ML:0.8 0.00006218362 0.2 AML other m 2023-07-06T00:29:42.40
IV.FIAM.HHN. ML:0.6 0.000013630135 0.18 AML other m 2023-07-06T00:29:47.68
IV.POFI.HHE. ML:0.8 0.00001056093 0.2 AML other m 2023-07-06T00:29:58.09
IV.POFI.HHN. ML:0.8 0.000008857736 0.3 AML other m 2023-07-06T00:29:58.39
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