Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 10-09-2023 and time 12:30:45 (Italy) in region 5 km NW Gallicano nel Lazio (RM)

A magnitude ML 1.9 earthquake occured in region: 5 km NW Gallicano nel Lazio (RM), on

  • 10-09-2023 10:30:45 (UTC)
  • 10-09-2023 12:30:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8970, 12.7730 at 11 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
Gallicano nel Lazio RM 5 6334 6334
Colonna RM 7 4287 10621
Tivoli RM 8 56533 67154
Zagarolo RM 8 17843 84997
San Cesareo RM 9 15153 100150
San Gregorio da Sassola RM 9 1619 101769
Casape RM 10 744 102513
Monte Porzio Catone RM 10 8693 111206
Poli RM 10 2418 113624
Monte Compatri RM 10 11978 125602
Rocca Priora RM 11 11962 137564
Palestrina RM 12 21672 159236
Castel San Pietro Romano RM 12 902 160138
Castel Madama RM 12 7399 167537
Guidonia Montecelio RM 12 88673 256210
Frascati RM 13 22087 278297
San Polo dei Cavalieri RM 14 2992 281289
Marcellina RM 14 7280 288569
Grottaferrata RM 15 20327 308896
Capranica Prenestina RM 15 351 309247
Rocca di Cave RM 15 377 309624
Labico RM 16 6379 316003
Pisoniano RM 16 770 316773
Cave RM 16 11287 328060
Rocca di Papa RM 16 17034 345094
Ciciliano RM 16 1336 346430
Sant'Angelo Romano RM 16 5018 351448
Vicovaro RM 17 4019 355467
Marino RM 17 43026 398493
Fonte Nuova RM 17 32562 431055
Sambuci RM 17 925 431980
Ciampino RM 18 38412 470392
San Vito Romano RM 18 3273 473665
Valmontone RM 18 15959 489624
Genazzano RM 18 6036 495660
Cerreto Laziale RM 18 1118 496778
Gerano RM 19 1263 498041
Mentana RM 19 22921 520962
Palombara Sabina RM 19 13269 534231
Saracinesco RM 19 185 534416
Lariano RM 19 13432 547848
Castel Gandolfo RM 19 8997 556845
Mandela RM 20 917 557762

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km S of Tivoli (56533 inhabitants)
12 Km SE of Guidonia Montecelio (88673 inhabitants)
23 Km N of Velletri (53303 inhabitants)
24 Km E of Roma (2864731 inhabitants)
34 Km NE of Pomezia (62966 inhabitants)
35 Km N of Aprilia (73446 inhabitants)
46 Km E of Fiumicino (78395 inhabitants)
49 Km N of Latina (125985 inhabitants)
51 Km N of Anzio (54211 inhabitants)
72 Km SW of L'Aquila (69753 inhabitants)
75 Km S of Terni (111501 inhabitants)
80 Km SE of Viterbo (67173 inhabitants)
84 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 1.9 2023-09-10
10:30:45		 41.8968 12.7732 11 2023-09-10
10:45:29		 Sala Sismica INGV-Roma 120941071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-10 10:30:45 ± 0.06
Latitude 41.8968 ± 0.0027
Longitude 12.7732 ± 0.0036
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120941071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
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) 64
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 43
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) 1.23567
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 25
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 120941071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-10 10:45:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.VINO.HHZ. 2023-09-10T10:32:43.66 3.0 undecidable manual Sn 0.56 0
OX.SABO.HHZ. 2023-09-10T10:32:31.67 3.0 undecidable manual Sn -5.64 0
GU.GORR.HHZ. 2023-09-10T10:32:26.84 3.0 undecidable manual Sn -1.07 0
RD.PGF.BHZ. 2023-09-10T10:32:16.44 3.0 undecidable manual Sg 8.5 0
4P.IT02A.HHZ. 2023-09-10T10:32:04.82 3.0 positive manual Pn 5.15 0
IV.MAGA.HHZ. 2023-09-10T10:32:02.53 3.0 undecidable manual Pg 13.09 0
IV.ATCC.EHZ. 2023-09-10T10:31:29.78 3.0 undecidable manual S 1.74 0
IV.MCRV.HHZ. 2023-09-10T10:31:18.77 3.0 undecidable manual Pn -2.12 0
IV.NRCA.HHZ. 2023-09-10T10:31:17.18 0.3 undecidable manual S 15 107.6145 50 0.48 56
IV.CAMP.HHZ. 2023-09-10T10:31:11.45 3.0 undecidable manual S -1.72 0
IV.CAMP.HHZ. 2023-09-10T10:31:11.13 3.0 undecidable manual P 0
IV.LNSS.HHZ. 2023-09-10T10:31:10.23 0.3 undecidable manual S 16 81.3519 50 0.55 57
IV.POFI.HHZ. 2023-09-10T10:31:09.73 1.0 undecidable manual S 104 80.1642 50 0.36 21
IV.RM33.EHZ. 2023-09-10T10:31:08.28 0.3 undecidable manual S 28 76.9674 50 -0.24 67
IV.CSP1.EHZ. 2023-09-10T10:31:08.27 0.1 undecidable manual P 15 137.1627 50 0.2 76
IV.LRP.EHZ. 2023-09-10T10:31:07.90 0.3 undecidable manual S 112 72.7716 50 0.5 62
IV.MF5.EHZ. 2023-09-10T10:31:07.72 0.1 undecidable manual P 25 133.4664 50 0.23 76
IV.VVLD.HHZ. 2023-09-10T10:31:06.85 0.3 undecidable manual S 92 70.2741 50 0.12 67
IV.FDMO.HHZ. 2023-09-10T10:31:06.40 0.1 undecidable manual P 11 128.9709 50 -0.41 77
IV.NRCA.HHZ. 2023-09-10T10:31:03.17 0.1 undecidable manual P 15 107.6145 50 -0.34 82
IV.CERA.HHZ. 2023-09-10T10:31:03.23 0.1 undecidable manual P 107 108.2139 50 -0.38 80
IV.SMA1.EHZ. 2023-09-10T10:31:02.10 0.1 undecidable manual P 29 93.5397 50 0.76 70
IV.PTQR.HHZ. 2023-09-10T10:31:02.25 0.3 undecidable manual S 75 53.6019 50 -0.03 71
IV.GIUL.HHZ. 2023-09-10T10:31:02.91 0.3 undecidable manual S 133 54.8007 50 0.32 67
IV.T0110.HHZ. 2023-09-10T10:31:01.11 0.1 undecidable manual P 66 90.4428 50 0.24 84
IV.LATB.EHZ. 2023-09-10T10:31:00.43 0.3 undecidable manual S 161 47.3193 50 -0.19 69
IV.GUAR.HHZ. 2023-09-10T10:30:59.50 0.3 undecidable manual S 104 46.0206 50 -0.75 60
IV.LNSS.HHZ. 2023-09-10T10:30:59.02 0.1 undecidable manual P 16 81.3519 50 -0.44 84
IV.FAGN.HHZ. 2023-09-10T10:30:58.73 0.6 undecidable manual P 58 78.2661 50 -0.26 44
IV.LRP.EHZ. 2023-09-10T10:30:58.01 0.1 undecidable manual P 112 72.7716 50 -0.13 90
IV.POFI.HHZ. 2023-09-10T10:30:58.86 0.1 undecidable manual P 104 80.1642 50 -0.41 84
IV.RM33.EHZ. 2023-09-10T10:30:58.79 0.1 undecidable manual P 28 76.9674 50 0 90
IV.VVLD.HHZ. 2023-09-10T10:30:57.27 0.1 undecidable manual P 92 70.2741 50 -0.48 84
IV.BARO.EHZ. 2023-09-10T10:30:57.68 3.0 undecidable manual P -1.94 0
IV.GIUL.HHZ. 2023-09-10T10:30:55.19 0.1 undecidable manual P 133 54.8007 50 -0.17 92
IV.PTQR.HHZ. 2023-09-10T10:30:54.97 0.3 negative manual P 75 53.6019 50 -0.21 69
IT.RMVT.HGE. 2023-09-10T10:30:54.67 0.3 undecidable manual S 286 24.5532 50 0.13 73
IV.GUAR.HHZ. 2023-09-10T10:30:54.00 0.1 undecidable manual P 104 46.0206 50 -0.01 96
IT.RMMM.HGE. 2023-09-10T10:30:54.56 0.6 undecidable manual S 276 26.6511 50 -0.52 45
IV.LATB.EHZ. 2023-09-10T10:30:53.94 0.1 undecidable manual P 161 47.3193 50 -0.28 91
IV.RDP.HNE. 2023-09-10T10:30:52.47 0.3 undecidable manual S 199 15.9729 124 0.25 74
IV.VIVA.HHZ. 2023-09-10T10:30:52.87 0.3 undecidable manual S 181 16.2726 124 0.58 69
IV.SAMA.EHZ. 2023-09-10T10:30:52.76 0.3 undecidable manual S 229 19.7691 50 -0.49 68
IV.CERT.HNZ. 2023-09-10T10:30:52.36 0.3 undecidable manual S 71 18.1707 50 -0.46 70
IV.MA9.HHZ. 2023-09-10T10:30:52.57 0.3 undecidable manual S 214 16.9719 123 0.08 76
IV.MTCE.HHZ. 2023-09-10T10:30:51.16 0.3 undecidable manual S 350 14.1747 128 -0.55 69
IT.RMMM.HGE. 2023-09-10T10:30:50.97 0.1 undecidable manual P 276 26.6511 50 -0.06 99
IT.RMVT.HGE. 2023-09-10T10:30:50.63 0.1 undecidable manual P 286 24.5532 50 -0.09 99
IV.SAMA.EHZ. 2023-09-10T10:30:49.91 0.1 undecidable manual P 229 19.7691 50 -0.06 100
IV.CERT.HNZ. 2023-09-10T10:30:49.75 0.1 undecidable manual P 71 18.1707 50 0.03 100
IV.MA9.HHZ. 2023-09-10T10:30:49.64 0.1 undecidable manual P 214 16.9719 123 0.11 100
IV.RDP.HNE. 2023-09-10T10:30:49.80 0.1 undecidable manual P 199 15.9729 124 0.43 94
IV.VIVA.HHZ. 2023-09-10T10:30:49.87 0.1 undecidable manual P 181 16.2726 124 0.46 93
IV.MTCE.HHZ. 2023-09-10T10:30:48.92 1.0 positive manual P 350 14.1747 128 -0.16 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHN. ML:2.3 0.00181 0.26 AML other m 2023-09-10T10:30:51.49
IV.MTCE.HHE. ML:2.2 0.001465 0.34 AML other m 2023-09-10T10:30:51.67
IV.CERT.HHN. ML:2.2 0.001185 1.22 AML other m 2023-09-10T10:30:53.72
IV.CERT.HNN. ML:2.0 0.0008835 0.38 AML other m 2023-09-10T10:30:53.72
IV.CERT.HNE. ML:2.2 0.00141 1.58 AML other m 2023-09-10T10:30:53.10
IV.CERT.HHE. ML:1.8 0.0005705 0.98 AML other m 2023-09-10T10:30:54.11
IV.GUAR.HHN. ML:1.8 0.000191 0.24 AML other m 2023-09-10T10:31:02.60
IV.GUAR.HHE. ML:1.9 0.000237 0.36 AML other m 2023-09-10T10:31:03.90
IV.GIUL.HHN. ML:1.8 0.0001645 0.6 AML other m 2023-09-10T10:31:05.68
IV.GIUL.HHE. ML:1.8 0.00014150000000000002 0.18 AML other m 2023-09-10T10:31:05.95
IV.PTQR.HHE. ML:1.7 0.0001116 0.44 AML other m 2023-09-10T10:31:07.34
IV.PTQR.HHN. ML:1.8 0.00014700000000000002 0.68 AML other m 2023-09-10T10:31:07.71
IV.VVLD.HHN. ML:1.8 0.0000993 1.62 AML other m 2023-09-10T10:31:10.00
IV.VVLD.HHE. ML:1.7 0.00007415000000000001 1.32 AML other m 2023-09-10T10:31:11.78
IV.RM33.EHE. ML:2.0 0.00014250000000000002 0.24 AML other m 2023-09-10T10:31:11.33
IV.LNSS.HHN. ML:2.2 0.000214 0.54 AML other m 2023-09-10T10:31:11.37
IV.LRP.EHN. ML:1.5 0.0000535 0.72 AML other m 2023-09-10T10:31:11.03
IV.LRP.EHE. ML:1.9 0.0001205 0.98 AML other m 2023-09-10T10:31:11.54
IV.LNSS.HHE. ML:2.2 0.0002065 0.18 AML other m 2023-09-10T10:31:11.95
IV.RM33.EHN. ML:1.9 0.00011649999999999999 0.88 AML other m 2023-09-10T10:31:12.39
IV.POFI.HHN. ML:1.5 0.000044300000000000006 1.44 AML other m 2023-09-10T10:31:14.08
IV.POFI.HHE. ML:1.3 0.00003185 1.24 AML other m 2023-09-10T10:31:15.64
IV.FAGN.HHE. ML:1.9 0.0001042 1.56 AML other m 2023-09-10T10:31:17.12
IV.SMA1.EHE. ML:2.0 0.00011 0.52 AML other m 2023-09-10T10:31:18.35
IV.T0110.HHN. ML:1.9 0.000095 0.66 AML other m 2023-09-10T10:31:18.40
IV.NRCA.HHE. ML:2.1 0.0001175 0.42 AML other m 2023-09-10T10:31:18.72
IV.NRCA.HHN. ML:1.9 0.00006850000000000001 0.66 AML other m 2023-09-10T10:31:19.77
IV.T0110.HHE. ML:1.8 0.0000633 0.54 AML other m 2023-09-10T10:31:19.64
IV.FAGN.HHN. ML:1.8 0.00008510000000000001 1.38 AML other m 2023-09-10T10:31:22.20
IV.SMA1.EHN. ML:1.9 0.00009525 1.38 AML other m 2023-09-10T10:31:23.28
IV.CERA.HHE. ML:1.7 0.00004124999999999999 0.64 AML other m 2023-09-10T10:31:24.34
IV.CERA.HHN. ML:1.8 0.00005435 1.28 AML other m 2023-09-10T10:31:25.17
IV.FDMO.HHE. ML:2.1 0.00007829999999999999 0.74 AML other m 2023-09-10T10:31:25.37
IV.FDMO.HHN. ML:2.0 0.00005755 0.36 AML other m 2023-09-10T10:31:25.69
IV.MF5.EHE. ML:2.0 0.00005815 0.42 AML other m 2023-09-10T10:31:30.50
IV.MF5.EHN. ML:2.0 0.00006604999999999999 0.42 AML other m 2023-09-10T10:31:35.74
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